Seagate Ironwolf vs WD Red (Which is Best in 2025/2026)?

In late 2025, choosing between Seagate IronWolf and WD Red for a NAS is less about raw performance and more about secondary factors such as noise, power consumption, pricing, and ecosystem. Both brands now offer broadly similar SATA performance in their mainstream and Pro lines once you reach 7200 RPM, 256 MB cache, and CMR recording, and both quote comparable workload ratings and multi bay support for NAS use. Durability claims in MTBF, workload per year, and 24 by 7 operation are also effectively at parity on paper, and the underlying engineering around vibration control, error recovery, and NAS specific firmware has converged to a large extent. Where meaningful technical differences still exist is in the maximum capacities on offer and how they are positioned. Seagate currently leads on headline capacity in the NAS tier with IronWolf Pro drives up to 30 TB, while WD Red Pro tops out slightly lower but overlaps most of the mainstream size points that home and small business users are likely to deploy. As a result, the decision for many buyers is less about which brand is objectively better and more about how each behaves in real deployments in terms of acoustics, energy use, long term running costs, warranty extras such as bundled recovery services, and regional pricing patterns at specific capacities.

Seagate vs WD (and Toshiba!) Market Share in 2025/2026?

Across the HDD industry in 2024 and early 2025, Western Digital and Seagate remain closely matched, with Western Digital holding a slight lead by several common measures. Public breakdowns of exabytes shipped in 2024 put Western Digital at roughly 38.6 percent of HDD capacity shipped worldwide, Seagate at about 37 percent, and Toshiba at around 24.4 percent, confirming that the market is effectively a 2 vendor race with a smaller but still significant third player. Although the exact percentages vary depending on whether you look at units, capacity, or revenue, the pattern is consistent, with Western Digital marginally ahead and Seagate following closely behind.

Recent industry and financial reporting also shows Western Digital gaining momentum in high capacity nearline drives, particularly in data center and cloud deployments, with disk based revenue and shipped capacity outpacing Seagate in at least some recent quarters. At the same time, Seagate retains a leadership position in very large capacity models, including 30 TB HAMR based NAS and nearline drives that are already commercially available and aimed at the same high density markets.

Taken together, these data points indicate a tightly contested landscape where Western Digital currently leads in overall shipped capacity and revenue, while Seagate pushes the capacity envelope and remains highly competitive in large scale deployments.

Seagate Ironwolf vs WD Red NAS Hard Drives – Price

In late 2025 there is a clear pattern in how Seagate and WD position their HDDs on price, even if individual deals move around constantly. In general Seagate tends to be slightly cheaper per terabyte across many mainstream retailers and regions, particularly for larger 16 TB to 24 TB IronWolf and Exos capacities. WD pricing is often a little higher at like for like capacity in third party channels, especially for newer Red Plus and Red Pro models, although temporary sales can narrow or reverse this gap. Both brands are heavily discounted during seasonal events, so headline price screenshots are only ever a snapshot rather than a permanent rule.

Where WD changes the picture is through its own direct store. WD sells Red, Red Plus and Red Pro drives through its retail site and often undercuts third party resellers by a noticeable margin, especially during promotions. That means in some regions the cheapest way to buy WD is directly from WD, while Seagate relies entirely on partner channels and keeps relatively steady discounting through Amazon and similar outlets. As a result it is common to see Seagate come out cheaper in most general marketplaces while WD can be the lowest price only on its own store, which is not available in every country.

Once you move up into Pro and nearline class drives, such as IronWolf Pro versus WD Red Pro or WD Gold, pricing becomes more fragmented. Seagate keeps a fairly consistent capacity step pricing model where higher capacities scale in a relatively predictable way. WD on the other hand often runs multiple Red Pro and enterprise SKUs at the same capacity with different cache sizes or internal designs, which leads to overlapping prices and large swings between models that appear similar on paper. In practice this means that at the Pro tier Seagate is usually easier to price compare, while WD may offer good value on specific model IDs or capacities but requires more careful checking of part numbers and current discounts before purchase.

Seagate Ironwolf vs WD Red – Noise Level Comparison

In terms of acoustic behaviour, Seagate IronWolf and IronWolf Pro drives are consistently a little louder than their WD Red Plus and Red Pro counterparts at like for like capacities. Manufacturer data sheets show most recent IronWolf and IronWolf Pro models idling in the mid to high 20 dBA range, with seek noise commonly around 30 to 32 dBA. WD Red Plus drives in the same capacities often idle in the low to mid 20 dBA range with typical seek levels in the mid to high 20 dBA band, while Red Pro models generally sit around 20 to 25 dBA idle and 31 to 36 dBA under seek depending on capacity and generation. In practical terms this means that in a quiet room or a small office, Seagate NAS drives tend to be more noticeable both at spin up and during sustained random activity.

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Seagate Ironwolf vs WD Red – Power Consumption (Idle / Active)

Looking purely at spec sheets, both Seagate and WD publish idle and seek values that cluster in similar bands, typically around the low 20 dBA range at idle and high 20 to mid 30 dBA under seek as capacities and spindle speeds rise. In practice though, the character of the noise differs between the brands. IronWolf and IronWolf Pro models tend to produce a sharper mechanical click pattern during head seeks and a more noticeable spin up profile, while WD Red Plus and Red Pro lines usually present as a smoother hum with less abrupt transitions between idle and active states. In a quiet room this difference in tone can matter as much as the numeric dBA rating itself.

At lower capacities, especially in the 2 TB to 6 TB range where air filled designs and lower spindle speeds are common, WD Red Plus models are often among the quietest options, with idle noise figures that sit at the lower end of the published spectrum and relatively soft seek sounds. Seagate standard IronWolf drives in these capacities are not especially loud by absolute numbers, but they generally sit slightly higher at idle and under random activity. Once you move into high capacity Pro class drives, WD Red Pro and IronWolf Pro become more comparable, although WD still often maintains a small advantage in idle noise on the newest helium filled models, while seek noise can be quite close on some capacities.

Noise differences increase as you add more bays and drives. A 2 bay or 4 bay NAS with mixed workloads may only expose a modest gap in acoustic behaviour between the brands, but 8 bay and larger systems can amplify any small variations. Multiple Seagate drives seeking at once will create more noticeable cumulative chatter and vibration inside a metal chassis, which can transfer into desks or shelving if the NAS is not well isolated. WD units with otherwise similar specifications and workload ratings usually generate less overall vibration, so the aggregate sound from a populated chassis can be easier to live with in shared spaces.

For users planning deployments in noise sensitive environments, such as a living room media setup or a small office where the NAS will sit in the same room as desks, these differences can be a factor in the buying decision once capacity and performance requirements are defined. Seagate remains attractive where price per terabyte and maximum capacity are the main priorities, and users are able to position the NAS in a cupboard, loft or separate room. WD drives typically suit scenarios where the system will remain close to people for long periods, sacrificing a small amount of price advantage in favour of lower background noise and a slightly less intrusive acoustic profile at both idle and under sustained activity.

Seagate Ironwolf vs WD Red – Verdict & Conclusion

From a technical perspective Seagate and WD now sit very close to one another in most core HDD metrics, particularly in the NAS focused IronWolf, IronWolf Pro, Red Plus and Red Pro ranges. Both brands use CMR recording on their NAS lines, have comparable workload ratings in each class, and converge around similar sustained transfer rates once you reach 7200 RPM and larger cache sizes. The main structural differences are that Seagate currently pushes higher maximum capacities into the consumer and prosumer space and includes bundled rescue data recovery on many NAS models, while WD tends to retain a small advantage in power consumption and acoustic behaviour at equivalent capacities, especially in multi bay systems. Historical issues such as WD Red SMR drives and Seagate high failure rate models at specific points in time are still relevant for older stock, but the current generation NAS ranges for both vendors are broadly aligned in specification and intended workload.

In practical terms the choice between Seagate IronWolf and WD Red often comes down to priority order rather than any single clear winner. Users aiming for the lowest cost per terabyte and the highest capacities available in the near term will usually find Seagate more attractive, particularly in larger IronWolf Pro and Exos class drives, accepting higher power draw and a more noticeable acoustic profile. Users who are sensitive to noise, want marginally lower long term energy usage or prefer WD’s clearer product segmentation may gravitate toward Red Plus or Red Pro, taking care to select the correct CMR models and capacities. In all cases the decision should be made at model level using current datasheets and pricing, not just brand reputation, and should be paired with a sensible RAID plan and an independent backup strategy, since neither vendor can remove the fundamental risk that any individual hard drive can fail.

Idle Seagate Ironwolf	Idle WD Red Plus	Active Seagate Ironwolf Pro	Active WD Red Pro

 

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Finally, for free advice about your setup, just leave a message in the comments below here at NASCompares.com and we will get back to you. Need Help? Where possible (and where appropriate) please provide as much information about your requirements, as then I can arrange the best answer and solution to your needs. Do not worry about your e-mail address being required, it will NOT be used in a mailing list and will NOT be used in any way other than to respond to your enquiry. [contact-form-7] TRY CHAT Terms and Conditions   Alternatively, why not ask me on the ASK NASCompares forum, by clicking the button below. This is a community hub that serves as a place that I can answer your question, chew the fat, share new release information and even get corrections posted. I will always get around to answering ALL queries, but as a one-man operation, I cannot promise speed! So by sharing your query in the ASK NASCompares section below, you can get a better range of solutions and suggestions, alongside my own.

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The Best Black Friday Hard Drive NAS Upgrade Deals

Black Friday 2025 has brought a wide range of discounts on storage hardware, making it one of the best times of the year to buy or expand your NAS or backup setup. Both Amazon and B&H are offering notable price drops on high-capacity NAS-class hard drives, external USB backup drives, and SSD-based portable options. Since drive prices fluctuate throughout the year, these seasonal promotions provide a rare chance to secure larger capacities, replace aging disks, or build out a new storage pool at a lower overall cost. Whether you need reliable NAS HDDs for a multi-bay system, fast SSDs for caching, or simple external drives for offsite backups, this guide highlights the key Black Friday offers worth considering across the major storage categories.

Reminder: When upgrading or expanding storage, always factor in proper data protection. A simple RAID 1 mirror provides basic redundancy for two-bay setups, while RAID 5 across three or more drives offers both fault tolerance and improved read performance. These configurations protect against drive failure but are not a substitute for external or offsite backups, which should remain part of any reliable storage strategy.

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Seagate IronWolf Pro 28TB Hard Drive – 21% OFF, $569.99  $449.99

28 TB 3.5″ SATA NAS HDD, 7200 rpm, 6 Gb/s interface, 512 MB cache, designed for 24×7 multi-user RAID/NAS use.

Currently discounted to around 449.99 USD (down from ~569.99 USD) which works out to roughly 16.1 USD per TB. The IronWolf Pro 28TB is built for serious NAS systems with features like Seagate’s AgileArray for vibration control, 2.5 million hour MTBF, RV sensors, and support for large multi-bay arrays. It is optimized for always-on operation and heavy workloads while delivering high capacity in a single drive.

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WD Red Plus 10TB Hard Drives – 32% OFF, $249.99  $169.99

10 TB 3.5″ SATA 6 Gb/s NAS-optimised HDD, 7200 rpm, 512 MB cache, designed for 24×7 RAID/NAS environments.

Currently available at approximately 169.99 USD (down from 249.99 USD), the cost works out to about 17.0 USD per TB. The WD Red Plus 10TB drive is built specifically for network attached storage systems, featuring WD’s NASware firmware for improved compatibility, a workload rating of up to 180 TB/year, and 1 million hours MTBF to support always-on usage. It is a strong option for home and small business NAS deployments requiring reliable RAID-ready storage at an attractive per-terabyte cost.

 

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WD 12TB Red Plus NAS HDD – NOW $199 ($70 OFF)

12 TB 3.5″ SATA 6 Gb/s NAS-optimized HDD with CMR, 7200 rpm, up to 196 MB/s sustained transfer, 256 MB cache, and rated for 180 TB/year workload.

Currently available at around 199 USD (after a price drop of 70 USD), which works out to approximately 16.6 USD per TB. The WD Red Plus 12TB is engineered for 24×7 NAS operation with features such as NASware firmware, dual-plane balance control, and compatibility testing across multi-drive NAS enclosures. It is a solid choice for home and small business NAS systems looking to maximize capacity per dollar while maintaining RAID-ready reliability and NAS-specific optimisations.

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SEAGATE 28TB IRONWOLF PRO HDD – $449.99 ($300 OFF) @ B&H

28 TB 3.5″ SATA 6 Gb/s NAS HDD, 7200 rpm, 512 MB cache, designed for 24×7 multi-user RAID/NAS environments

Now priced at 449.99 USD (a discount of about 300 USD), which equates to roughly 16.1 USD per TB, the IronWolf Pro 28TB is built for high-capacity NAS systems and demanding multi-user environments. It includes Seagate’s AgileArray technology, IronWolf Health Management, a workload rating of up to 550 TB per year, and a 5-year warranty with three years of data recovery services.

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Black Friday External Hard Drive Deals for Backups

Black Friday 2025 has also brought substantial savings to external hard drives and high-capacity USB storage, making it an ideal time to expand backup options or build a cost-effective offsite archive. Many of these desktop and portable drives offer some of the lowest cost-per-terabyte pricing of the year, giving users a simple way to protect NAS data, store large media collections, or create secondary backups without adding complexity to their main system. The following deals highlight the most notable reductions on 22TB to 28TB external drives currently available from Amazon and B&H.

Seagate 28TB USB Expansion Backup Drive – 24% OFF, $380.99  $289.99

28 TB USB 3.0 desktop external HDD, 3.5″ form-factor, pre-formatted for Windows/macOS, includes Rescue Data Recovery Services.

Now offered at around 289.99 USD (discounted from approximately 380.99 USD), this works out to about 10.4 USD per TB. The Seagate Expansion 28TB External Hard Drive is designed for plug-and-play use with Windows, macOS and ChromeOS, making it a strong choice for large backups, media libraries or secondary storage via USB. It features a USB-C/Type-A cable, AC power adapter, and a 1-year warranty.

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Western Digital 14TB External – 39% OFF, $279.99    $169.99

14 TB USB 3.2 Gen 1 external desktop HDD (3.5″ form factor, micro-USB interface, preformatted NTFS).

Currently discounted to approximately 169.99 USD (from 279.99 USD), which works out to about 12.1 USD per TB. This WD Elements 14TB drive offers a straightforward plug-and-play backup solution with USB connectivity, large capacity, and simple desktop deployment. It is preformatted for Windows, includes the power adapter, cable, and a 2-year warranty. While it’s best suited for archiving or bulk storage rather than high throughput demands, for its price it offers excellent capacity value.

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Seagate Expansion 22TB External HDD – 8% OFF, $249.99   $229.99

22 TB USB 3.0 (or USB 3.2 Gen 1) external desktop hard drive, 3.5″ form-factor, pre-formatted for Windows/macOS.

Currently offered at 229.99 USD (after an 8 % discount), which works out to approximately 10.45 USD per TB. This Seagate Expansion 22TB drive is a high-capacity external solution suited to bulk data storage, large static media libraries, or as a cost-effective backup target. With plug-and-play USB operation and a large single-drive footprint, it offers strong value for users who need massive capacity without the complexity of a RAID setup.

 

 

 

 

HDD Price per TB

US Seagate One Touch Hub 8TB External Hard Drive Desktop HDD – USB-C and USB 3.0 port, for Co...40.25% OFF
US Toshiba L200 Mobile 2.5" 7mm 1TB SATA HDD 'Bulk' (HDWL110UZSVA)...36.20% OFF
US Western Digital Blue WD20SPZX 2 TB Hard Drive - 2.5" Internal - SATA (SATA/600)...31.91% OFF
US WD Gold 4TB Enterprise Class Hard Disk Drive - 7200 RPM Class SATA 6 Gb/s 128MB Cache 3.5 In...30.15% OFF
US Seagate BarraCuda 6TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s 5400 RPM 256MB Cache ...23.86% OFF
US Western Digital WD20EFRX-68AX9N0 NAS DCM: HHRNKTJCH WMC30 2TB...23.08% OFF
US Seagate Exos 7E8 4TB 512n SATA 128MB Cache 3.5-Inch Enterprise Hard Drive (ST4000NM0035), Me...21.67% OFF
US Seagate SkyHawk 10TB Surveillance Hard Drive - SATA 6Gb/s 256MB Cache 3.5-Inch Internal Driv...20.95% OFF
US Western Digital 4TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 256...19.61% OFF
US Seagate ST18000NM003D 18TB Exos X20 SATA Hard Drive, 3.5" HDD, SATA 6Gb/s, 7200rpm, 256MB Ca...17.05% OFF
US WD Bulk WD20EFRX 2TB SATA 6Gbs 64MB Red Drive...16.31% OFF
US HGST HGST Ultrastar He6 6TB 3.5" SATA 7200 RPM Enterprise Internal Hard Drive with 64Mb Cach...14.29% OFF
US Seagate Enterprise Capacity v7 ST12000NM0127 - Hard Drive - 12 TB - Internal - 3.5 Inch - SA...9.44% OFF
US Western Digital WD WD1003FZEX 1TB 3.5IN Internal HD TF3650 1 TB...9.09% OFF
US WD Black 1TB SATA 6.0 3.5" Desktop HDD WD1003FZEX...9.09% OFF
US Seagate IronWolf 8TB NAS Internal Hard Drive HDD 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache fo...8.00% OFF
US Seagate Barracuda ST2000DM008 Hard Drive 3.5 Inches 2000 GB Series ATA III...7.91% OFF
US Western Digital Purple WD43PURZ 4 TB Serial ATA III Hard Drive 5400 RPM Cache 256 MB 3.5 Inc...7.42% OFF
US Seagate Skyhawk AI 16TB Video Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 256MB Cache fo...7.17% OFF
US Western Digital Caviar Green 2 TB Desktop Hard Drive (WD20EARS) (Old Model)...6.90% OFF
US Seagate Enterprise ST2000NM004A 3.5" 2000GB SAS Hard Drive...6.79% OFF
US Western Digital 10TB WD Red Plus NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 2...6.36% OFF
US WD Blue 320GB Internal Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 16MB Cache 2.5 Inch - WD3...5.78% OFF
US Seagate Skyhawk 6TB Surveillance Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 256MB Cache...5.03% OFF
UK Western Digital Blue 4TB Interne hard disc 8.9cm (3.5 Zoll) SATA III WD40EZAZ Bulk...40.68% OFF
UK Western Digital WD30EZRZ...35.88% OFF
UK Western Digital WD10EURX AV-GP 1TB Internal Hard Drive 8.9 cm (3.5 Inch) SATA 6 Gb/s 64 MB...34.43% OFF
UK Western Digital WD6002FZWX Black Performance 6 TB 3.5-Inch Hard Drive - Black...32.63% OFF
UK Western Digital HUH721212ALE604 12TB Ultrastar DC HC520 SATA HDD - 7200 RPM Class, SATA 6 Gb...31.56% OFF
UK Western Digital WD40EFRX SATA Hard Drive...29.68% OFF
UK Seagate Expansion Desktop, 8TB, External Hard Drive, USB 3.0, 2 year Rescue Services (STKP80...28.27% OFF
UK Western Digital Caviar Green WD20EARX Hard Disk 2TB SATA3...26.32% OFF
UK WD Green WD30EZRX - hard drive - 3 TB - SATA 6Gb/s...21.43% OFF
UK Western Digital WD4002FYYZ 4 TB 3.5-Inch Hard Drive - Gold...20.63% OFF
UK Western Digital WD30EFRX - 3TB 3.5 inch NAS SATA3-6Gb/s Red HDD - OEM...19.63% OFF
UK WD Red 12TB 3.5 Inch NAS Internal Hard Drive - 5400 RPM - WD120EFAX...18.02% OFF
UK Toshiba MQ01ABD MQ01ABD100 1 TB 2.5" Internal Hard Drive - Bulk HDKBB96...17.65% OFF
UK Seagate IronWolf Pro, 4 TB, NAS Internal Hard Drive, CMR 3.5 Inch, SATA 6 Gb/s 7,200 RPM, 25...16.70% OFF
UK WD Red Pro NAS Hard Drive WD141KFGX - Disque dur - 14 To - interne - 3.5" - SATA 6Gb/s - 720...16.59% OFF
UK Western Digital WD 1TB 2.5 USB Elements Portable, WDBUZG0010BBK (Elements Portable Black)...16.38% OFF
UK Toshiba HDWU120UZSVA 2TB V300 3.5' Video Streaming Hard Drive...14.03% OFF
UK Toshiba HDWL110UZSVA...11.35% OFF
UK Seagate ST2000DM001 Barracuda 2000 GB Internal...10.59% OFF
UK Western Digital wd2500lplx 2.5 "250 GB Serial ATA600 7200 rpm...10.46% OFF
UK Seagate SkyHawk, 10 TB, Surveillance Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s 256 MB...9.82% OFF
UK Seagate IronWolf internal hard drive 3.5 12TB HDD 3 years warranty 256MB 7200rpm 24 hours op...9.31% OFF
UK Western Digital WD2500LPLX...9.24% OFF
UK Seagate SkyHawk AI ST10000VE0008 - Hard drive - 10 TB - internal - 3.5 Inch - SATA 6 GB/s - ...9.18% OFF
UK Western Digital Purple 1TB Surveillance 3.5 Inch SATA 6 Gb/s Hard Disk Drive with Allframe 4...8.84% OFF
UK Seagate BarraCuda Pro 1 TB Internal Hard Drive Performance HDD – 2.5 Inch SATA 6 Gb/s 7200...8.84% OFF
UK WD Red 2TB 3.5 Inch NAS Internal Hard Drive - 5400 RPM - WD20EFAX...8.68% OFF
UK Western Digital 3TB WD WD30EZAZ Blue 5400RPM 256MB...8.28% OFF
UK Seagate SkyHawk AI, 14 TB, Surveillance Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s 256...8.11% OFF
UK Seagate Exos X18 Enterprise Class, 18TB, Enterprise Internal Hard Drive, SATA, 3,5" 6Gbit/s,...6.76% OFF
UK Seagate ST2000DX002 FireCuda 2 TB internal hybrid hard drive (8.89 cm (3.5 inches) 64 MB cac...6.72% OFF
UK Western Digital Ultrastar DC HC310 (HUS726T6TALE6L4) SATA Enterprise HDD 7200 RPM, 6 TB...6.47% OFF
UK Seagate ST2000DX002 Firecuda 2TB Internal Hybrid Hard Drive, SSHD; 2000 GB; 88.9 mm (3.5); 6...6.31% OFF
UK WD Western Digital 2TB 2.5" 128MB SATA III Hard Drive for Laptops, PS4 (WD20SPZX)...5.86% OFF
UK WD Red WD40EFRX 4 TB SATA 6 Gb/s Hard Disk Drive with NASware...5.10% OFF
UK WD 18TB Elements Desktop Hard Drive, USB 3.0 - WDBWLG0180HBK-NESN...5.08% OFF

 

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This description contains links to Amazon. These links will take you to some of the products mentioned in today's content. As an Amazon Associate, I earn from qualifying purchases. Visit the NASCompares Deal Finder to find the best place to buy this device in your region, based on Service, Support and Reputation - Just Search for your NAS Drive in the Box Below

Need Advice on Data Storage from an Expert?

Finally, for free advice about your setup, just leave a message in the comments below here at NASCompares.com and we will get back to you. Need Help? Where possible (and where appropriate) please provide as much information about your requirements, as then I can arrange the best answer and solution to your needs. Do not worry about your e-mail address being required, it will NOT be used in a mailing list and will NOT be used in any way other than to respond to your enquiry. [contact-form-7] TRY CHAT Terms and Conditions   Alternatively, why not ask me on the ASK NASCompares forum, by clicking the button below. This is a community hub that serves as a place that I can answer your question, chew the fat, share new release information and even get corrections posted. I will always get around to answering ALL queries, but as a one-man operation, I cannot promise speed! So by sharing your query in the ASK NASCompares section below, you can get a better range of solutions and suggestions, alongside my own.

WE LOVE COFFEE

 

NAS & Storage Bargains and Deals this Black Friday 2025

Black Friday 2025 has arrived and this year the spotlight is not only on traditional Synology/QNAP upgrades but also on the fast-growing world of alternative NAS platforms (after the PR nightmare that was 2025 for Synology re:HDDs!), DIY server builds, and software licence promos. Synology’s desktop lineup has seen a bunch of refreshes recently in the x25, which means popular models such as the DS423+ and DS923+ may finally see meaningful reductions, while entry-level units like the DS223 and BeeStation series are expected to feature the most aggressive pricing. At the same time, UGREEN is pushing hard with its NASync range and making ALOT of noise in the world of home/prosumer NAS, and several of these systems are already appearing with early Black Friday discounts. DIY NAS enthusiasts also have more choice than ever, with multi-bay chassis and compact servers from CWWK, AOOSTAR, Jonsbo cases, and Minisforum’s N5 receiving notable reductions. UnRAID has confirmed incoming licence promos for Black Friday soon, making it an ideal time for new users to adopt flexible array management and VM workloads. Then you have Terramaster making 10-20% off promos on their 2025 series AND the m.2 focused F4 and F8 Devices! Even newer entrants such as UnifyDrive are participating, with the UT2 receiving one of its biggest discounts to date and now sitting in an extremely competitive price bracket. Below you will find updated recommendations for the best NAS models for backups, Plex, business, and surveillance, along with live offer links for all major NAS ecosystems as Black Friday deals continue to roll out.

IMPORTANT – This page will be updated regularly each day for the next 2 weeks!

Recommended Deals (so far) BEST DEAL SO FAR – Beelink ME Mini N150 NAS, 12GB RAM + 2TB SSD + 64GB eMMC – $279 (was $349) HERE SEAGATE 28TB IRONWOLF PRO HDD – $449.99 (was $569.99) Synology DS925+ NAS 14% OFF, NOW $552.99 HERE UnRAID 25% Price Drop + $15 Voucher Included with ALL Orders – HERE UNIFI ALL BLACK FRIDAY DEALS – HERE UGREEN 120W NAS UPS – 15% OFF, NOW $84.99 HERE 40% OFF PLEX PASS Licenses – Month/Year/Lifetime HERE QNAP TS-464 NAS – REDUCED TO £469 (20% OFF) HERE Terramaster F8 SSD PLUS Flash NAS – 20% OFF, NOW $639.99 HERE 2x WD Red Pro 26TB Hard Drives (52TB Max) – $878 ($420 OFF) HERE LincStation N2 6-Bay SSD 10GbE NAS – NOW $395 (was $429) HERE SEAGATE 28TB IRONWOLF PRO HDD – $449.99 ($300 OFF) HERE UGREEN DXP4800 PLUS NAS 4-Bay – $594.99 UnifyDrive UT2 2x M.2 NVMe+2.5GbE+8 Core ARM Mobile NAS – $200 OFF, Now $399 UGREEN DH4300 PLUS Value 4-Bay NAS – $65 OFF, Now $364.99 Synology DS1525+ NAS – REDUCED TO $691.49 (15% OFF) HERE CWWK N150 / N355 10GbE 8x SATA NAS Motherboard Combo – Now $215 PocketCloud Portable NAS – 20% OFF, NOW $239.99 Gl.iNet Slate 7 WiFi7 Mobile Router, NOW $120 (29% OFF) HERE Minisforum N5 PRO NAS – NOW £888 including TAX HERE

BLACK FRIDAY WEEK DEALS (so far) – (WILL REDIRECT TO YOUR AMAZON REGION AUTOMATICALLY)

Useful Articles:

• NAS Hard Drive Black Friday Deals Article – HERE
• Synology NAS Black Friday Deals – HERE
• UniFi Network Hardware Black Friday Deals – HERE
• UGREEN NAS Black Friday Deals – HERE
• Terramaster Black Friday Deals – HERE

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SEAGATE 28TB IRONWOLF PRO HDD – $449.99 (was $569.99)

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SEAGATE 28TB EXTERNAL USB HDD – $289.99 ($100 OFF)

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Beelink ME Mini N150 NAS Mini PC, 12GB RAM + 2TB SSD + 64GB eMMC – $279 (was $349) HERE

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Synology DS925+ NAS – 14% OFF, NOW $552.99

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SEAGATE 28TB IRONWOLF PRO HDD – $449.99 ($300 OFF)

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UGREEN 120W NAS UPS – 15% OFF, NOW $84.99

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2x WD Red Pro 26TB Hard Drives (52TB Max) – $878 ($420 OFF)

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QNAP TS-264 2-Bay Featured NAS – $349.99 (20% OFF)

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Minisforum N5  NAS – NOW $594.90 (15% OFF)

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UnRAID 25% Price Drop + $15 Voucher Included with ALL Orders – HERE

The Unraid Cyber Weekend Sale started on Wednesday November 26th, and will run through Cyber Monday, December 1st, 2025. They are discounting Starter and Unleashed licenses, plus all Unleashed upgrades (so, if you have a monthly or annual license, and want to upgrade to lifetime, you will get a discount of the partial upgrade cost too). Also, every license purchased will come with a $15 voucher good for the Unraid Merch Store included. Click below (or HERE) to get your UnRAID license at 25% off.

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Terramaster F8 SSD PLUS Flash NAS – 20% OFF, NOW $639.99

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UniFi Black Friday Deals – HERE

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Asustor 6x M.2 NVMe Flashstor 6 – Down to $404.99 (9% OFF)

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Best UniFi Black Friday Deals – The UniFi Dream Router 7 & Gateway Fiber

The Dream Router 7 and the Gateway Fiber stand out as UniFi’s strongest Black Friday 2025 offers, especially given their large price cuts. The Dream Router 7 drops to $229 from $279 and brings a full UniFi controller, WiFi 7, a 10G SFP+ WAN port, a 2.5GbE WAN port, four LAN ports with one PoE output, and integrated NVR storage via microSD. It supports the full UniFi application suite and can manage 30+ devices while handling 300+ clients on its 2.4GHz, 5GHz, and 6GHz radios. Security and routing features include a stateful firewall, L7 filtering, IDS and IPS with 20,000+ signatures through CyberSecure, advanced NAT, SD-WAN, and VPN support for WireGuard, Teleport, IPsec, and OpenVPN. With coverage up to 160 square metres and a compact desktop design, it offers a complete all in one gateway and controller at a much lower cost, making it an easy upgrade for homes or small offices moving to WiFi 7 or multigig internet.

UniFi WiFi 7 2.5G+10G Dream Router	UniFi Gateway Fiber 10G/2.5G Gateway

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Synology DS925+ NAS – 15% OFF, NOW £472 inc.TAX

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40% OFF PLEX PASS Licenses – Month/Year/Lifetime HERE

• Lifetime, now $149.99 (was $249.99) – HERE
• Annual, now $41.99 (was $69.99) – HERE
• Month, now $4.19 (was $6.99) – HERE

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10G N150 NAS Motherboard / DDR5 6* SATA /  Intel I226 / 2.5G Mini ITX /  2* M.2 – $219.50 HERE

This Mini-ITX NAS-oriented board features an onboard Intel N150 processor paired with DDR5 memory support and a strong storage layout including six SATA 3.0 ports and two PCIe-based M.2 slots. It includes triple-NIC networking with dual Intel I226-V 2.5GbE ports and a 10GbE AQC113 controller, making it suitable for DIY NAS builds that require high-bandwidth local access. With PCIe 3.0 expansion, ATX 24+4-pin power, and full support for Windows and Linux, it offers excellent value at its discounted Black Friday price of $219.50.

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UniFi Cloud Gateway Black Friday Deals

The Cloud Gateway Max, Cloud Gateway Max NS, and Gateway Lite form the most affordable cluster of UniFi Black Friday gateway offers this year. The Cloud Gateway Max drops from $279 to $179 and delivers full UniFi application support with 2.3Gbps IDS and IPS, 2.5GbE WAN, five 2.5GbE LAN ports, and selectable NVMe NVR storage up to 2TB. The NS model follows the same hardware blueprint but arrives at a lower $159 price while retaining 2.3Gbps inspection performance and 30 plus device management. The Gateway Lite stands out as the entry level option at an aggressive $49, down from $129. It offers 1Gbps IDS and IPS, a compact footprint, full UniFi security features, USB C power, and a simple 1GbE WAN plus 1GbE LAN layout, making it ideal for small networks or for replacing an ageing USG.

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Synology DS1525+ NAS – $160 OFF, NOW $639.99

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LincStation N2 6-Bay SSD 10GbE NAS – NOW $395 (was $429) HERE

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QNAP TS-464 NAS – $469.99 ($120 OFF)

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Synology DS1825+ NAS – NOW $919 ($230 OFF)

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PocketCloud Portable NAS – 20% OFF, NOW $239.99

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QNAP TS-264 2-Bay ALL-Rounder NAS – $349.99 ($90 OFF)

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UniFi WiFI APs for Mesh Black Friday Deals

The U6 Plus, FlexHD, and nanoHD form the most affordable set of UniFi access point offers this Black Friday and each one targets a different type of upgrade. The U6 Plus drops to $99 and brings dual band WiFi 6, 4 spatial streams, 2.4Gbps 5GHz throughput, and a 300 plus client capacity in a compact ceiling or wall mounted design. It suits homes and small businesses looking for a modern AP with strong roaming support, PPSK, captive portal options, and full UniFi WiFi management features. The FlexHD falls to $69 and remains one of the most versatile indoor or outdoor mesh units, offering WiFi 5 with 6 spatial streams, 1.7Gbps 5GHz performance, and multiple mounting options that make it easy to extend coverage. The nanoHD also lands at $69 and provides a compact ceiling mounted WiFi 5 solution with 4×4 MU MIMO on 5GHz, up to 1.7Gbps throughput, and a design that blends into most environments, making it ideal for small offices and meeting rooms.

 

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Synology DS1525+ NAS – REDUCED TO $691.49 (15% OFF)

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Minisforum N5 PRO NAS – NOW £888 including TAX

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SUPER BUDGET N5105 NAS Mobo Combo / 4 Cores 4 Threads Low Power Use / 4×2.5G i225 / 2x M.2 Slot 6xSATA – $196.94 HERE

This budget Mini ITX NAS board uses the Intel N5105 processor and offers enough performance for Plex, Jellyfin, Docker containers, and lightweight TrueNAS or UnRAID builds. It includes 4 x 2.5GbE ports for multi-NIC routing or link-aggregation and pairs 6 SATA ports with 2 M.2 NVMe slots, making it suitable for large media libraries or mixed SSD cache setups. With DDR4 support up to 64GB, dual display outputs, low power consumption, and fan headers for stable 24/7 operation, it delivers strong value at its reduced Black Friday price.

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QNAP TS-464 NAS – REDUCED TO £469 (20% OFF)

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QNAP TS-233 VALUE 2-Bay NAS – 15% OFF, £152.15 (inc.TAX)

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UGREEN DXP6800 PRO – 20% OFF, Now £799

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Synology DS225+ NAS – $303.49 (11% REDUCTION)

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QNAP TS-464 NAS – 8GB VERSION, 20% OFF, $469.99

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Gl.iNet Slate 7 WiFi7 Mobile Router, NOW $120 (29% OFF)

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Gl.iNet Puli AX SIM/LTE Router, NOW $331 (15% OFF)

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UniFi Cameras for Protect Black Friday Deals

The G5 Pro, AI 360, and G5 PTZ form the front end of UniFi’s discounted camera lineup for Black Friday 2025 and each model targets a different style of coverage. The G5 Pro drops from $379 to $199 and delivers 4K recording with a 3x optical zoom lens, strong daytime clarity, and IR night vision that reaches 25 m or up to 40 m with the Vision Enhancer. It offers people, vehicle, and animal detection, IP65 weather resistance, IK04 impact resistance, and flexible mounting for walls, ceilings, and poles. The AI 360 is reduced from $399 to $249 and provides full 360 degree coverage through a 2K fisheye sensor with pan tilt zoom control handled digitally inside UniFi Protect. It includes two way audio, smart detections, IPX4 weather resistance when covered, and IK08 tamper protection, making it suitable for wide indoor areas, retail spaces, or open office floors. The G5 PTZ falls to $229 from $299 and adds low latency mechanical pan tilt with a 2x optical zoom lens, 20 m IR night vision, and IP66 weather protection, which makes it an option for entry points, driveways, or perimeter paths.

 

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UGREEN DXP4800 PLUS – 20% OFF, NOW $559.99

Synology DS124 NAS – NOW $139.99 (22% PRICE DROP)

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UGREEN NAS Black Friday Deals – NOW LIVE

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The Best UGREEN NAS System Offers:

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(Best UGREEN NAS Deal) UGREEN DXP4800 PLUS NAS 4-Bay – $594.99

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Terramaster F4-425 PLUS (New 2025 Series Release) NAS – $484.99

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UGREEN DH4300 PLUS Value 4-Bay NAS – $65 OFF, Now $364.99

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UnifyDrive UT2 2x M.2 NVMe+2.5GbE+8 Core ARM Mobile NAS – $200 OFF, Now $399

+ Get a further 5% OFF with this code: NASCOMPARES

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UGREEN 6-Bay Power NAS System (DXP6800 Pro) – $180 OFF, NOW $1019.99

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ZimaBlade 7700, DOWN TO $159 WITH Promo Code ‘BLACKFRIDAYNASKIT10’

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LincStation N2 – 4xm.2 + 2x SATA SSD + 10GbE + UnRAID Licence – NOW $429 / £401

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UGREEN All-Flash DXP480T 10 Core i5 10GbE NAS – $150 OFF, NOW $849.99

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CWWK NAS DIY Motherboards and CPU+MoBo Combos:

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CWWK N150 / N355 10GbE 8x SATA NAS Motherboard Combo – Now $215

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CWWK 4x m.2 NVMe Pocket NAS Box (Intel N150 / N355) P6 – Just $195.63 NOW

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QNAP Refurb Store – 30% OFF Pre-Populated Desktop NAS and Expansions

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Minisforum MS-01 Intel Core, 2x 10GbE, USB4, PCIe 4X16 and 3x M.2 Workstation – Down to just $479.90

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Terramaster F6-424 Max – Powerhouse 6-Bay NAS – $150 OFF, Now $849.99

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If you want to skip ahead to the Deal List, just click below:

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————–  Useful Links  —————

US Amazon – Amazon USA Black Friday Official Page – Amazon UK Black Friday Official Page

Amazon Warehouse (20% Off Everything on Black Friday)

USA – UK – Germany

Still unsure of what you need – use the Free Advice Section here on NASCompares.

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Hot Tips when you Buy a NAS this Black Friday 2024

In order for you to get the very best NAS deals this Black Friday, here are some hot tips that I have personally used for the last few years to get the very best deals.

Amazon Warehouse Deals are 20% lower

For those that aren’t aware, Amazon has a whole section of their website that is dedicated to pre-owned and opened items. This includes both NAS, hard drives, SSD and more for your storage. During Amazon Black Friday 2024, the discount on these broken-seal items will be increased by an additional 20% and for those looking for an insane bargain, this will be irresistible.

Another tip when buying NAS or Hard Drives from Amazon Warehouse is that although (as they are broken seal/used/returned items) they have a shorter warranty from Amazon, you will almost certainly be able to claim the FULL warranty coverage from Synology, QNAP, WD or Seagate. They just want your serial number and a receipt of purchase – this will not state the amazon reduced warranty.

Amazon Warehouse for different countries can be found below:

 

Amazon Warehouse USA

Amazon Warehouse UK

Amazon Warehouse Germany

Latest Deals Update and Notifications

If you want to make sure you see the LATEST Black Friday deals for NAS (as new ones are added every hour) then I would recommend checking the official Amazon Prime page regularly. It will also include the very latest Lightning Deals too

US Amazon – Amazon Deals Page

UK Amazon – Amazon Deals Page

Amazon Prime for FREE

The prices listed on Amazon for NAS during the Black Friday event are only available to Prime members. If you are not a member, don’t worry, as you can use the 30-Day free trial to sign up for a Prime, or just pay for 1 month of Prime as a student and get it at 50% off. Then after you finish your purchase, you can cancel your subscription. The other bonus of this is that you will qualify for fast, next day delivery for free. I would recommend however that you do not cancel your subscription until you have received your order and tested your item.

As then you will still be able to take advantage of the fast and free return policy extended to Prime members. This is especially useful when buying NAS Hard Drives and you are worried about broken drives!

Improved Delivery on your NAS Black Friday Deal

It is a well-known fact that Amazon Prime membership includes free next day delivery and Amazon has even upped the stakes by stating that they will be providing the fastest-ever Black Friday delivery of just 14 minutes between the cart and the courier, last year we saw and heard numerous examples of delivery issues with Black Friday deals, adding 2-3 days on supposed next-day shipping.

If any of your Amazon Prime delivery dates are not the 24 hours turn around that they promise, then definitely complain to Amazon after you receive your goods (not before) as they will almost certainly have a deluge of customer enquiries after Black Friday 2024 and  in an effort to conclude the matter, you might get an additional discount, a gift vouchers or more. Currently, the trending ‘gesture of goodwill’ gift is a free month of Prime membership.

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Need Advice on Data Storage from an Expert?

Finally, for free advice about your setup, just leave a message in the comments below here at NASCompares.com and we will get back to you. Need Help? Where possible (and where appropriate) please provide as much information about your requirements, as then I can arrange the best answer and solution to your needs. Do not worry about your e-mail address being required, it will NOT be used in a mailing list and will NOT be used in any way other than to respond to your enquiry. [contact-form-7] TRY CHAT Terms and Conditions   Alternatively, why not ask me on the ASK NASCompares forum, by clicking the button below. This is a community hub that serves as a place that I can answer your question, chew the fat, share new release information and even get corrections posted. I will always get around to answering ALL queries, but as a one-man operation, I cannot promise speed! So by sharing your query in the ASK NASCompares section below, you can get a better range of solutions and suggestions, alongside my own.

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Can We Forgive and Forget The Synology HDD Compatibility Flip Flop?

Synology’s recent reversal on hard drive compatibility has reopened a larger debate about whether its NAS systems remain a trustworthy and sensible choice for both new buyers and long-term users. Throughout most of 2025, the company faced sustained criticism after enforcing strict drive verification checks that prevented users from installing or operating third-party HDDs and SSDs from major brands like Seagate and Western Digital. This policy, applied to the new Plus-series NAS models such as the DS925+, DS1525+, and DS1825+, effectively forced customers to purchase Synology’s own branded media or risk an unusable system. For a company long regarded as the industry standard for dependable and user-friendly storage solutions, the move appeared both unexpected and self-defeating. Although Synology later justified the decision as a way to ensure system stability and reliability, the backlash was immediate and global, with declining sales and widespread frustration among users who saw the change as a form of corporate overreach. Now, with the brand having confirmed a full rollback through the DSM 7.3 update—restoring support for non-Synology drives and removing prior warning prompts—the discussion has shifted. While the reversal is seen as a victory for users, it also highlights how fragile consumer confidence has become, and how a single policy misstep can redefine a company’s relationship with its community.

Below, my original video after the change by Synology after 6 months of their strict HDD media stance:

What Did Synology Do Wrong?

Synology’s critical mistake was implementing a restrictive hardware policy that undermined one of its key historical strengths: flexibility. For years, the company had built its reputation on offering an intuitive software platform, DSM, that ran on a wide variety of hardware configurations. By deciding to enforce hard drive compatibility restrictions in the 2025 generation of Plus-series NAS systems, Synology effectively turned once-open devices into closed platforms. The systems refused to initialise DSM or create storage pools when non-Synology drives were detected, and even when users managed to proceed, the interface was flooded with persistent warnings labelling third-party media as “unverified” or “at risk.” This move frustrated not only home users who wanted affordable upgrade options, but also small businesses that relied on Synology NAS for their daily operations. It created unnecessary technical and financial barriers at a time when alternative NAS vendors were offering greater compatibility and value. The brand’s own messaging made the situation worse: early statements focused on “system integrity” and “firmware optimisation” but failed to acknowledge that the change mainly benefited Synology’s hardware sales rather than the end user.

The second major error lay in how the company managed the fallout. Synology’s communication strategy throughout the controversy was inconsistent, fragmented, and in some regions almost non-existent. Different regional branches released conflicting press materials, with some hinting that compatibility with Seagate and Western Digital drives would soon return, while others maintained silence. No clear timeline or explanation was given for the testing process or the reasoning behind such aggressive enforcement. As a result, long-standing partners and distributors were left unsure of how to address customer concerns. Meanwhile, the online community—particularly on Reddit, NAS forums, and YouTube—quickly filled the information vacuum, fuelling frustration and speculation. Instead of clarifying the company’s intentions, Synology appeared defensive and disengaged, disabling comments on some of its own videos and refusing to directly address mounting criticism. This combination of restrictive policy and poor communication not only hurt its reputation but also suggested a growing disconnect between the brand’s leadership and its user base.

Why Are Users Mad at Synology?

Many users felt betrayed by Synology’s actions because the company had long marketed itself as the reliable, user-first alternative to more complex or DIY storage solutions. For years, Synology’s systems were praised for their openness—allowing customers to build their NAS setups using widely available components from trusted brands like Seagate, WD, and Toshiba. The introduction of hard drive restrictions in 2025 fundamentally altered that relationship. Suddenly, the same users who had invested heavily in Synology’s ecosystem found themselves unable to upgrade, expand, or even install DSM without purchasing the brand’s own drives, which were often rebranded versions of existing enterprise models sold at a premium. The move was viewed as a breach of trust, and the lack of transparency surrounding it only made things worse. Many saw it as an attempt to create a closed ecosystem that prioritised recurring hardware profits over customer freedom. This frustration was compounded by the timing—during a period when users were already facing higher hardware costs and tighter IT budgets, making Synology’s restrictive approach feel especially tone-deaf.

The Alerts and ‘Warnings’ that users have gotten used to up tll now (i.e pre DSM 7.3 roll out):

Another major source of anger came from how the policy rollout created confusion and inconsistency across Synology’s product lineup. While the Plus-series desktop NAS models received the strictest restrictions, larger RackStation and XS-series devices remained unaffected, creating the impression that Synology viewed its home and small-business customers as expendable. Even after announcing the rollback with DSM 7.3, many users noted that the company’s official compatibility lists still failed to mention Seagate or WD drives, and that public communication about the change was minimal. For those outside tech circles, this meant that the situation looked unchanged—product pages still implied that only Synology drives were supported, and many older negative reviews remained visible online. As a result, even with the restrictions now lifted, the perception of Synology as a brand willing to prioritise profit over user loyalty persists. The long delay in addressing community backlash, combined with inconsistent messaging, has left many customers sceptical that this U-turn represents a genuine shift rather than damage control.

What Did Synology Do to Fix This?

Synology’s eventual fix came in the form of a full policy reversal integrated into DSM 7.3, the company’s next major software update. With this version, users of the 2025 generation of Plus-series NAS devices—including models such as the DS925+, DS1525+, and DS1825+—regained the ability to freely use third-party hard drives and SSDs. The update removed not only the installation barriers but also the persistent “unverified drive” and “at risk” warnings that had previously appeared in Storage Manager. For most users, this restored full functionality, allowing them to initialise DSM, create and expand RAID arrays, use hot spares, and assign SSDs for caching without restrictions. The change essentially returned Synology’s systems to the state they were in before the controversial policy was introduced earlier in the year. The reversal applied primarily to desktop-class NAS systems rather than rackmount or XS-series models, suggesting that Synology wanted to restore goodwill among its core consumer and small-business audience first.

However, the way Synology implemented this reversal has drawn mixed responses. Instead of releasing a simple compatibility database update, which could have resolved the issue quickly, the company bundled the fix into a full DSM version upgrade. That meant users had to install an entirely new operating system build to regain third-party drive support, even if they were otherwise satisfied with their existing DSM 7.2 installations. For those managing multiple NAS units or enterprise environments, this created complications, especially since DSM 7.3 initially lacked a public beta and required careful validation before deployment.

The company also issued few direct statements about the rollback, opting instead for limited press communications that focused on “listening to customer feedback.” Despite the importance of the change, Synology’s product pages still make little mention of renewed Seagate and WD compatibility, leaving potential buyers to rely on external coverage or word of mouth. While the technical fix was effective, the manner of its rollout showed that Synology’s communication strategy remains cautious, reactive, and focused on damage limitation rather than proactive transparency.

What were/are the benefits of Buying Synology-branded Hard Drives and SSDs?

In parallel with the policy adjustments introduced in DSM 7.3, Synology has also begun expanding a series of benefits and incentives aimed at customers who purchase Synology NAS systems together with Synology-branded storage media. These initiatives are part of the company’s ongoing effort to strengthen its vertically integrated ecosystem, ensuring optimal performance and reliability when all components come from the same source. In selected markets, buyers who purchase Synology HAT, HAS, or SAT series drives on the same invoice as their NAS hardware now receive extended warranty coverage of up to five years, administered directly through authorized distributors and resellers. In addition, Synology has introduced an Express Replacement program, allowing for immediate drive swaps during the warranty period without waiting for the defective unit to be shipped and inspected, effectively mirroring the convenience of a premium RMA service. These benefits are available at no extra cost when drives are purchased through approved channels. The initiative is designed to make Synology’s validated ecosystem more appealing to businesses seeking predictable lifecycle management and faster recovery in the event of hardware failure, while also providing an incentive for users to standardize on Synology-branded components rather than mixing third-party storage.

Head over to Blackvoid HERE to read Luka’s great write-up on DSM 7.3 below:

Why Are Some Users Unconvinced?

Many long-time Synology owners remain sceptical because the company’s pattern of restrictive decision-making has not been limited to hard drives. Over the years, Synology has gradually tightened control over hardware support in other areas, such as M.2 NVMe SSD usage, network adapters, and GPU compatibility. Even though the recent rollback allows full use of third-party HDDs and SSDs in Plus-series models, the same freedom does not apply to NVMe storage. Users still cannot create storage pools or volumes on M.2 drives unless they are Synology-branded, which reinforces the perception that the company is only willing to compromise when it faces enough public pressure. Critics point out that while Synology deserves credit for reversing the hard drive restrictions, it has shown no similar flexibility in other parts of its ecosystem. This selective openness suggests a tactical move designed to repair short-term reputation damage rather than a genuine shift toward more open hardware policies. As a result, many users fear that future DSM updates could easily reintroduce similar restrictions under a different justification.

Another concern is that Synology has not done enough to communicate these changes clearly to new buyers. Even after the DSM 7.3 announcement, the company’s official compatibility lists for 2025 models still prioritise its own drives, with no explicit mention of Seagate or WD models being supported again. For first-time users who rely on these lists for purchasing decisions, there is no clear indication that the policy has changed.

This lack of transparency undermines confidence in Synology’s commitment to openness. Furthermore, the decision to tie the rollback to a major DSM update rather than a smaller patch raises worries that the company could use similar tactics in the future to control hardware functionality through software revisions. Many see the reversal as a necessary correction rather than an act of goodwill, and that distinction matters. Users may accept Synology’s reasoning for now, but the brand’s reputation for reliability has been replaced by a lingering doubt about whether it can be trusted to keep its platform open and user-focused.

NAS Series	Drives on Compatibility List	Drives Not Listed	Drives on Incompatibility List
RS Plus (e.g., RS2423+, RS422+)	Supported for new installation, storage pool creation, and migration	Supported only for migration; cannot create new storage pools or caches	Fully blocked from all operations
DVA/NVR Series (e.g., DVA1622, DVA3221, NVR1218)	Supported for installation and migration	Supported only for migration; cannot create new storage pools	Fully blocked from all operations
Supported Drive Types	HDD and 2.5″ SATA SSD	HDD and 2.5″ SATA SSD (migration only)	All drive types blocked
Drive Example Notes	Synology HAT5300/HAT3300 verified; select enterprise drives	Seagate IronWolf, SkyHawk, WD Purple not yet verified for use	Drives failing thermal or firmware tests
Use Case	Rackmount and surveillance workloads requiring consistent write throughput	Data migration or backup restoration	Unsupported entirely

Should You Trust Synology NAS Again?

Trusting Synology again depends largely on how much users value its software ecosystem compared to its corporate behaviour. The company’s DSM operating system remains one of the most advanced and stable NAS platforms available, offering a wide range of applications for backup, surveillance, multimedia, and virtualization that are unmatched by most competitors. For those who prioritise reliability, ease of use, and integration over raw hardware flexibility, Synology still provides a compelling product. The reintroduction of unrestricted hard drive support in DSM 7.3 restores much of the practical functionality that users lost earlier this year, and for many, that will be enough to justify purchasing a new NAS. From a technical standpoint, the Plus-series devices are still capable and efficient, with consistent performance, strong data protection features, and excellent long-term support. In short, the hardware remains solid, and the software continues to define Synology’s market dominance in turnkey storage solutions.

Below, references to the change in hard drive support policy are either absent in release notes or severely underplayed on the compatibility pages as of 3rd Nov 2025.

However, from a consumer trust perspective, caution is still warranted. The brand’s repeated pattern of restricting features, followed by later partial reversals, has left many wary that similar policies could return in future product generations. Even though DSM 7.3 represents a positive correction, Synology has not issued any long-term assurances that it will maintain this open stance. There is also concern about how much influence profit margins and proprietary hardware incentives continue to have over product decisions. For experienced users, the safest approach may be to treat Synology as a premium but increasingly closed ecosystem—one that delivers outstanding software at the cost of long-term flexibility. Whether it is “okay” to buy a Synology NAS now depends on priorities: if you value a polished interface and dependable system behaviour above everything else, Synology is still one of the best options available. But if transparency, open standards, and full hardware freedom matter more, then the company’s recent U-turn should be seen not as a full restoration of trust, but as a cautious and temporary concession to public pressure.

If/When you do wish to purchase a Synology NAS, please do use the links below in order to purchase your NAS. Doing so results in a small commission coming to me and Ed here at NASCompares, and it allows us to keep doing what we do here, and is the most frictionless and zero-cost way for you to support our articles, reviews, videos, guides, support systems and more.

Synology DS925+ NAS	Synology DS1525+ NAS	Synology DS1825+ NAS
Check Amazon in Your Region for the Synology DS925+ NAS	Amazon in Your Region for the Synology DS1525+ NAS @ $799	Amazon in Your Region for the Synology DS1825+ NAS @ $1149
heck B&H for the Synology DS925+ NAS	B&H for the Synology DS1525+ NAS @ $1149.99	B&H for the Synology DS1825+ NAS @ $1149.99

 

 

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This description contains links to Amazon. These links will take you to some of the products mentioned in today's content. As an Amazon Associate, I earn from qualifying purchases. Visit the NASCompares Deal Finder to find the best place to buy this device in your region, based on Service, Support and Reputation - Just Search for your NAS Drive in the Box Below

Need Advice on Data Storage from an Expert?

Finally, for free advice about your setup, just leave a message in the comments below here at NASCompares.com and we will get back to you. Need Help? Where possible (and where appropriate) please provide as much information about your requirements, as then I can arrange the best answer and solution to your needs. Do not worry about your e-mail address being required, it will NOT be used in a mailing list and will NOT be used in any way other than to respond to your enquiry. [contact-form-7] TRY CHAT Terms and Conditions   Alternatively, why not ask me on the ASK NASCompares forum, by clicking the button below. This is a community hub that serves as a place that I can answer your question, chew the fat, share new release information and even get corrections posted. I will always get around to answering ALL queries, but as a one-man operation, I cannot promise speed! So by sharing your query in the ASK NASCompares section below, you can get a better range of solutions and suggestions, alongside my own.

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The UniFi UPS-Tower 600W UPS Review

UPDATE – The Desktop UPS TOWER is available HERE for $159 , and the 2U Rackmount UPS-2U is available later in Q4 2025 HERE for $279

UniFi’s entry into the uninterruptible power supply market brings two distinct solutions tailored for professional and prosumer environments: the UPS-Tower desktop model and the UPS-2U Rackmount unit. The tower configuration provides 1,000VA / 600W of backup capacity and uses a single 12V, 9Ah lead-acid battery, while the larger 2U rackmount version scales up to 1,440VA / 1,000W with dual battery modules. Both adopt a line-interactive architecture with simulated sine wave output, a 6–10 ms transfer time, and Ethernet-based network management. Integration is handled natively within UniFi Network, where users can adopt, monitor, and configure the UPS directly from the UniFi Controller interface. For non-UniFi deployments, both models retain NUT (Network UPS Tools) compatibility for safe shutdown and system monitoring. This marks a significant expansion of UniFi’s ecosystem into power management and continuity—areas traditionally dominated by brands like APC and CyberPower—positioning UniFi’s UPS line as a bridge between smart network infrastructure and automated power protection.

The UniFi UPS-Tower 1000VA / 600W Review – Quick Conclusion

The UniFi UPS-Tower and UPS-2U deliver practical and ecosystem-focused power protection for small network environments. Both models emphasize integration and manageability rather than raw performance, providing stable 120V line-interactive backup power with simulated sine wave output. The tower model offers 600W of protection in a compact desktop enclosure, while the rackmount unit increases capacity to 1,000W with dual batteries. Integration through the UniFi Network Controller is straightforward, enabling central monitoring and alerting without external software. While limitations such as the lack of USB ports, PoE passthrough, and pure sine wave output restrict versatility outside the UniFi ecosystem, both units are solid entries for users seeking consistent, centrally managed backup power within UniFi-managed infrastructures.

The UniFi UPS-Tower UPS Review – Design & Connectivity

The UniFi UPS-Tower adopts a vertically oriented, compact chassis that measures 288 x 99 x 280.5 mm and weighs just over 8 kg. Its enclosure is built from a polycarbonate and ABS blend, which offers a balance between durability and low weight, and the overall shape resembles a small desktop speaker or heater.

The unit’s IP20 rating indicates it is intended for indoor use only, with ventilation panels positioned at the top, sides, and bottom to maintain airflow. During testing, internal temperatures averaged around 45–47°C after 24 hours of continuous operation, demonstrating stable thermal management for a unit of this density. The design is understated, with no LCD screen or physical display, relying instead on LED indicators and the UniFi interface for monitoring battery level and status.

In terms of connectivity, UniFi has implemented a clear division between power protection and control interfaces. On the rear panel, the UPS-Tower provides five surge-only outlets and five battery-backed surge-protected outlets, all of which are NEMA 5-15R ports suitable for 120V environments. The input connection uses a NEMA 5-15P plug, rated for 12A maximum load, supporting both 50 and 60 Hz operation. While this configuration is typical of compact line-interactive UPS units, the number of protected outlets is unusually high for its size, making it suitable for powering multiple small network devices, NAS units, or edge appliances simultaneously. However, only the five battery-backed ports will remain operational during a power loss.

UniFi has also included Ethernet management for remote monitoring and control. The rear I/O layout features a 100/10 MbE network connection that links the UPS directly into the UniFi ecosystem, as well as two GbE ports for surge in/out, allowing for protection of wired data paths. This implementation enables the UPS to send automatic notifications and power-state updates to the UniFi controller, ensuring that connected devices can safely power down when mains supply is interrupted. While users will not find USB connectivity here—a feature absent from both models—Ethernet management ensures seamless network-level integration with UniFi OS devices and provides remote monitoring capabilities not typically available in basic desktop UPS designs.

On the visual and operational interface side, UniFi relies on a multi-stage LED system to communicate battery and status information. A ring of LEDs on the front panel indicates power state, network connectivity, and battery percentage, with specific color patterns representing states such as initialization, adoption, or firmware upgrades. For example, a steady blue LED denotes normal operation, while flashing red signals a low battery, and alternating white/blue indicates firmware updating. This LED-centric approach aligns with UniFi’s existing product language and keeps the design minimalistic while relying on software integration for detailed telemetry.

Physically, the UPS-Tower fits neatly into a small office or studio environment, blending alongside UniFi routers or switches without dominating desk space. It operates quietly, with only a faint hum from the internal fan during battery mode. The 2U rackmount model, by contrast, uses a galvanized steel enclosure with front ventilation and nearly double the weight at 14 kg, prioritizing durability for data racks and wiring cabinets.

Both maintain an IP20 protection rating, ensuring basic safety against accidental contact but not dust or moisture resistance. Overall, UniFi’s approach emphasizes modularity, network integration, and compactness over display-driven functionality, positioning these UPS units as discreet but essential components within managed network setups.

The UniFi UPS-Tower UPS Review – Internal Hardware

Internally, the UniFi UPS-Tower follows a line-interactive architecture, combining voltage regulation with battery backup to ensure smooth transitions during power interruptions. The system utilizes an automatic voltage regulation (AVR) circuit that adjusts minor fluctuations in mains voltage without switching to battery mode, minimizing wear on the internal power cells. In the event of an outage or severe voltage dip, the UPS switches to battery operation within 6 to 10 milliseconds, maintaining output stability at 120V AC with a ±10% regulation margin. The waveform produced in battery mode is a simulated sine wave, which is adequate for most networking gear and consumer electronics, though not ideal for high-sensitivity audio, medical, or laboratory equipment. Power delivery remains consistent throughout short outages, allowing network hardware, NAS units, and servers to complete safe shutdown procedures.

The UPS-Tower contains a single 12V, 9Ah sealed lead-acid battery, user-removable via a bottom access panel. This design makes future maintenance straightforward, allowing owners to replace the battery when its capacity diminishes after several years of use. At full load (600W), the runtime averages around 2 minutes, while at half load, it extends to approximately 7 minutes before automatic shutdown. Recharge time to 90% capacity is listed at 6 to 8 hours. Thermal performance under sustained use is stable, and the inclusion of passive and active ventilation ensures no overheating under normal operating conditions. The system is also protected against short circuits, overloads, and over-voltage faults, automatically tripping into fault mode if thresholds of 110% to 120% load are exceeded.

Comparatively, the UPS-2U Rackmount uses a dual-battery setup with two 12V, 9Ah lead-acid modules to achieve 1,440VA / 1,000W output capacity. It shares the same waveform and transfer time but provides slightly extended runtime—2.3 minutes at full load and 8 minutes at half load—thanks to the added battery reserve. It also benefits from a galvanized steel chassis that enhances durability and is better suited for professional rack environments. Both systems are NDAA-compliant and certified under FCC, IC, UL 1778, and CSA C22.2 No. 107.3, ensuring safety and performance standards for commercial and residential use. In both models, system management and network telemetry are handled by a dedicated network controller chip, enabling UniFi OS integration and data synchronization with other UniFi devices.

The UniFi UPS-Tower UPS Review – Functionality

The UniFi UPS series is built around simplicity and ecosystem-level integration rather than feature-heavy configuration. Both the UPS-Tower and UPS-2U connect directly to the UniFi Network controller via Ethernet, where they appear alongside other UniFi devices for adoption. Once added, users can view real-time battery percentage, load level, input/output voltage, and system temperature directly from the UniFi interface. The units are also capable of sending power event notifications when mains power fails or returns, ensuring administrators receive alerts through the existing UniFi management system without relying on third-party monitoring software. This network-level approach allows the UPS to act as both a power backup and an automated coordination point for controlled shutdowns across UniFi infrastructure, such as Dream Machines, switches, or NAS units.

Integration with non-UniFi devices is handled through Network UPS Tools (NUT) compatibility. This makes the UPS-Tower particularly flexible in mixed environments where NAS devices or servers from other vendors, such as Synology or QNAP, require graceful shutdown when the UPS switches to battery mode. Users can define credentials and associate the UPS with NUT clients on the same network to relay status and trigger automated shutdowns once the battery reaches a predefined threshold. Although the review highlighted the lack of USB connectivity, which restricts plug-and-play use with devices expecting a traditional USB UPS handshake, the Ethernet management layer compensates by offering wider network-based communication. However, features such as per-device runtime configuration or selective port control are not yet implemented, leaving shutdown scheduling dependent on firmware updates or future model revisions.

The control and monitoring interface remains minimalistic, relying heavily on UniFi’s centralized GUI rather than onboard interaction. LEDs on the chassis provide a clear visual indication of status—covering power mode, adoption state, and battery level—but all deeper telemetry must be accessed through UniFi Network. Once paired, users can also configure email or push notifications for voltage irregularities, battery health alerts, and firmware updates. It is important to note that the current firmware does not support pure sine wave operation or lithium-ion battery upgrades, though UniFi has stated that future models will expand the portfolio to include these higher-end options. In its present form, the UPS-Tower and UPS-2U focus on stability, ease of deployment, and unified management within a single software environment, making them efficient for UniFi users seeking automation without added complexity.

The UniFi UPS-Tower UPS Review – Conclusion and Verdict

The UniFi UPS-Tower and UPS-2U represent the brand’s first foray into managed backup power systems, designed primarily to extend the reliability and consistency of the broader UniFi ecosystem. Both units share the same line-interactive architecture, simulated sine wave output, and Ethernet-based monitoring, offering a predictable and easily managed experience for users already invested in UniFi infrastructure. Their minimalist design, compact footprint, and seamless adoption through the UniFi Network Controller make them suitable for environments where simplicity, remote monitoring, and integration outweigh the need for advanced runtime management or pure sine wave output. For most small network or NAS setups, either model will provide adequate protection during short outages and brownouts, while ensuring systems are safely powered down when battery capacity is depleted.

However, their appeal remains closely tied to the UniFi ecosystem. The absence of USB connectivity, PoE passthrough, and lithium-ion battery options limits their usefulness in heterogeneous or high-performance environments. Users seeking pure sine wave support, longer runtimes, or advanced per-device control will likely need to wait for the next generation of UniFi UPS models, which the company has already suggested will expand to include these options. As they stand, the UPS-Tower and UPS-2U are well-built, tightly integrated, and cost-effective for UniFi users, but less compelling for those operating outside that ecosystem. They function precisely as intended: reliable, network-aware power backups for UniFi-managed systems, providing foundational stability rather than feature innovation.

UniFi UPS-Tower PROS

UniFi UPS-Tower CONS

Seamless integration with UniFi Network Controller for centralized management Compact and minimalistic design with low noise and stable thermal performance Ethernet-based control and monitoring eliminate the need for USB connectivity NUT compatibility enables basic third-party system integration User-replaceable lead-acid battery for extended product lifespan Competitive pricing relative to similar managed UPS devices Reliable short-term backup and safe shutdown coordination for UniFi devices

No USB port for direct communication with standalone servers or NAS systems Simulated sine wave output limits use with sensitive equipment Lacks PoE passthrough and per-device power control options

 

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Should You Upgrade Your Synology from DSM 7.2 to DSM 7.3?

DSM 7.3 represents Synology’s final major release under the DSM 7 platform before the expected transition to DSM 8, and it introduces a mix of refinements, policy reversals, and new enterprise tools that signal both the maturity and the approaching end of this software generation. The update arrives after an extended rollout period that began in mid-2025 and has been deployed gradually across supported NAS models to ensure stability. It brings several notable changes, most prominently the revision of the company’s restrictive hard drive policy under the new HCL 5.0 standard, allowing a broader range of third-party drives on 2025 Plus series systems. Other additions include the Synology Tiering package, designed to automate storage management between multiple NAS devices, and the introduction of the AI Console, a framework that integrates external AI and LLM providers into Synology’s productivity applications. Alongside these new components, DSM 7.3 also adds incremental updates such as native exFAT support, more flexible encryption handling, improved domain and directory management, and several kernel-level security patches.

However, for most existing users running DSM 7.2, the decision to upgrade should not be automatic. Many of the most visible features in DSM 7.3, including Synology Drive 4.0 and early versions of Synology Tiering, can already be accessed through separate beta packages on DSM 7.2 without performing a full system upgrade. Moreover, DSM 7.3 has arrived without a public beta phase, leading to mixed community feedback on compatibility issues and minor application regressions reported during early adoption. The release is stable for general use, but it represents an incremental refinement rather than a fundamental reinvention of Synology’s operating environment. For many users, DSM 7.3 serves as both a capstone for the current platform and a preparatory step toward the next-generation DSM 8 ecosystem expected to follow in 2026.

Should You Upgrade to Synology DSM 7.3? The TL;DR

For most existing Synology users, DSM 7.3 is a cautious, incremental update rather than a transformative one. It refines several areas—particularly in data security via vulnerability patches, encrypted storage handling, and drive compatibility—but few of these changes are critical for stable systems already running DSM 7.2. The improved drive policy on 2025 Plus models is a welcome reversal of the restrictive compatibility introduced earlier, yet older systems benefit little beyond quality-of-life improvements. Similarly, the new Synology Tiering and AI Console frameworks show potential but are limited in scope, requiring multi-system deployments or external AI integrations that do not suit typical home or small business users. In short, DSM 7.3 is reliable and functionally solid, but it introduces no must-have feature for those already content with DSM 7.2. Users with newer 2025 Plus series hardware, or those who need to take advantage of the new tiering, encryption, or administrative tools, can confidently upgrade once their model is supported. However, administrators running mission-critical workloads, media servers, or older legacy devices may prefer to wait until early 2026 for further stability updates or the initial DSM 8 previews. The release feels transitional—a final, polished step for the DSM 7 generation rather than a defining milestone—so unless your deployment directly benefits from one of its headline features, remaining on DSM 7.2 remains a perfectly reasonable choice.

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Will Upgrading to DSM 7.3 Remove My Ability to Hardware Transcode?

Upgrading to DSM 7.3 does not remove hardware transcoding support on systems that already possess compatible integrated graphics or dedicated GPU functionality. The removal of hardware transcoding drivers occurred earlier, during the rollout of DSM 7.2.2, and affected only specific 2025-generation NAS models where Synology chose to disable HEVC (H.265) hardware acceleration for licensing and driver maintenance reasons. For all older devices—such as the DS920+, DS423+, and DS224+—the upgrade to DSM 7.3 preserves existing transcoding capabilities, including both H.264 and H.265 conversions, assuming these were functional in DSM 7.2. Users can continue to use hardware-assisted video conversion in applications such as Synology Video Station (if you still have it!), Plex, and Jellyfin without additional configuration. No drivers are removed or replaced by the DSM 7.3 upgrade process, and GPU-accelerated workloads remain fully accessible. The only cautionary point applies to future NAS models that will ship with DSM 7.3 preinstalled, as these may already reflect Synology’s newer driver policy, but existing systems upgrading from DSM 7.2 retain their transcoding performance entirely unchanged. Just remember that Synology 2025 series devices that have an integrated graphics CPU do NOT have the graphics driver by default. Watch the video below to learn more:

Will Upgrading to DSM 7.3 Result in My M.2 SSDs Becoming Unsupported or Unusable?

For most users, upgrading to DSM 7.3 will not cause any change to M.2 SSD functionality. Systems that already have existing cache or storage configurations using M.2 NVMe drives in DSM 7.2 will continue to operate normally after the upgrade, with no data loss or drive disconnection. The update does not remove support for previously installed third-party NVMe SSDs, nor does it alter existing caching or volume structures.

However, DSM 7.3 maintains Synology’s restrictive stance on creating new NVMe-based storage pools (i.e only their own bradned drives currently) or caches using unverified drives. While the broader HCL 5.0 policy restores open drive usage for SATA HDDs and SSDs on the 2025 Plus series, it does not extend to M.2 NVMe media, which still require official validation to be initialised in new roles. Users upgrading from DSM 7.2 who already have third-party M.2 drives configured will see no functional difference, but those attempting to add or reassign new NVMe devices after the upgrade will remain subject to the same compatibility enforcement introduced in DSM 7.2.

Is Synology Drive 4.0 Worth Upgrading to DSM 7.3 For?

Synology Drive 4.0 introduces a collection of small but practical improvements that enhance team collaboration and file management, but none of these changes require DSM 7.3 to function. The new version adds improved file labelling and categorisation tools, making it easier for teams to assign colour-coded or custom tags to shared content.

It also refines file request functionality, allowing users to specify reasons for requesting access and to track these submissions more transparently. File locking has also been expanded, now supporting manual control in addition to automatic version locking, which prevents conflicts when multiple users are editing the same document.

Together, these updates improve workflow precision and traceability, particularly in shared office environments or remote teams using Drive as a private alternative to cloud collaboration platforms such as OneDrive or Google Drive.

Beyond these refinements, Synology Drive 4.0 also brings stronger integration with Synology Account authentication, a requirement for accessing its newest collaborative features. This includes cross-user label sharing, improved audit tracking, and the option to enforce identity binding for Drive users in larger deployments.

However, all of these capabilities remain accessible to DSM 7.2 users via Synology’s beta package program, meaning there is no requirement to upgrade to DSM 7.3 to test or use them. Unless you specifically need tighter Drive account linkage or plan to adopt other DSM 7.3-only features such as Tiering or AI Console integration, the Drive 4.0 update alone does not justify upgrading your NAS operating system.

Is Synology Tiering Worth Upgrading to DSM 7.3 For?

Synology Tiering is one of the most significant new features in DSM 7.3, introducing an automated data management system designed to move infrequently accessed files from fast “hot” storage to lower-cost “cold” storage across multiple NAS devices. The concept is similar to hierarchical storage management in enterprise systems, but unlike QNAP’s QTier, it does not operate within a single NAS.

Instead, it requires two or more Synology NAS units running DSM 7.3, with the hot tier hosting the primary, frequently used data, and the cold tier configured as a secondary vault where less active files are migrated. Administrators can create tiering plans that determine how long a file remains in the hot tier based on modification or access frequency, with policies ranging from one day to several years. Transfers occur automatically over encrypted HTTPS connections, and stub files are left behind in the hot tier to preserve accessibility, allowing users to recall files seamlessly when needed.

However, despite its potential, Synology Tiering remains a beta-stage feature with limited configuration depth and hardware support. Not all NAS systems qualify for hot-tier deployment, and the supported model lists are inconsistent. For example, the DS425+—a system without M.2 slots—supports hot-tier operation, whereas the DS923+, which features greater performance and expandability, does not. Likewise, several older Plus-series models and most rackmount units are limited to cold-tier functionality only.

The service currently lacks integration with Synology Drive, encrypted folders, or other key DSM services, meaning many shared folders cannot participate in tiering policies. While the feature offers promise for businesses managing distributed sites or large archives, it is still early in development and unsuitable as the sole reason to perform a DSM 7.3 upgrade. It can also be tested independently on DSM 7.2 via the beta package, allowing administrators to evaluate its practicality before committing to a full system migration.

It is worth noting that Synology’s allocation of which NAS systems qualify as hot-tier and cold-tier devices under DSM 7.3 results in some unusual distinctions between models. Several systems with similar or even higher technical specifications are listed only as cold-tier devices, while others with more modest hardware are fully approved for hot-tier functionality.

For example, the Intel Celeron-based DS225+, which supports only SATA HDDs and lacks M.2 NVMe or 10GbE connectivity, is officially designated as a hot-tier system. In contrast, the AMD Ryzen R1600-based DS923+, which includes dual M.2 NVMe slots and 10GbE upgradability, appears only on the cold-tier list.

This creates a noticeable mismatch between capability and feature assignment across both desktop and rackmount systems, suggesting that Synology’s tiering support matrix has been determined on a per-model basis rather than by hardware class.

Model Listings (as defined under DSM 7.3):

• Hot-tier supported systems:
  FS6400, FS3600, FS3410, FS3400, FS2500, FS200T, HD6500, SA3400D, SA3200D, SA6400, SA3610, SA3600, SA3410, SA3400, RS4021xs+, RS3621xs+, RS3621RPxs, RS2825RP+, DS3622xs+, DS1823xs+, DS1621xs+, DS1825+, DS1525+, DS925+, DS725+, DS425+, DS225+.

• Cold-tier supported systems:
  HD6500, FS6400, FS3600, FS3410, FS3400, FS2500, FS200T, SA3400D, SA3200D, SA6400, SA3610, SA3600, SA3410, SA3400, RS4021xs+, RS3621xs+, RS3621RPxs, RS2825RP+, RS2423RP+, RS2423+, RS2821RP+, RS2421RP+, RS2421+, RS1221RP+, RS1221+, RS822RP+, RS822+, RS820RP+, RS820+, RS422+, DS3622xs+, DS1823xs+, DS1621xs+, DS2422+, DS1825+, DS1821+, DS1621+, DS1525+, DS1522+, DS1520+, DS925+, DS923+, DS725+, DS723+, DS920+, DS720+, DS620slim, DS425+, DS423+, DS420+, DS225+, DS224+, DS220+, DVA1622, DVA3221.

The division between these two groups highlights some unexpected choices, where NAS models with more advanced configurations—such as integrated NVMe storage or faster network options—are limited to cold-tier participation, while smaller, SATA-only systems are permitted full hot-tier operation.

Are Synology AI Admin Console Services Worth Upgrading to DSM 7.3 For?

The Synology AI Console is a new administrative framework introduced in DSM 7.3 that allows NAS administrators to connect external artificial intelligence and large language model (LLM) services, such as OpenAI, Azure OpenAI, Google Gemini, and Amazon Bedrock, directly into select Synology productivity applications. Its purpose is to enhance tools like Synology MailPlus and Synology Office with text summarisation, translation, and content generation capabilities.

Rather than hosting AI workloads locally, the Console acts as a bridge between the NAS and third-party AI providers through user-supplied API keys. Administrators can control who can access these features, set daily or per-minute token limits to manage consumption, and monitor all requests via detailed transaction logs.

A privacy-focused de-identification mechanism can also be enabled to mask sensitive data—such as names, IP addresses, or account details—before it leaves the NAS for external processing, restoring it upon return.

While these controls demonstrate a well-considered security approach, the AI Console remains divisive. Because all AI requests are processed externally rather than on-device, the system sends portions of MailPlus and Office text content to third-party cloud providers for analysis and response generation.

Even with encryption and masking in place, this design conflicts with the expectations of users who adopt a NAS precisely to maintain full local control over data.

Moreover, the Console currently supports only text-based functions and does not provide local inference, on-device LLM hosting, or GPU-accelerated processing, which limits its appeal to professional or privacy-conscious users. For most home and small-business owners, the AI Console is an optional enhancement rather than a compelling reason to upgrade.

It may benefit organisations already running MailPlus or Office in a collaborative environment, but its dependence on external AI infrastructure means its inclusion in DSM 7.3 is unlikely to justify a system-wide update on its own.

A Pre-emptive Warning about DSM 7.3 and Synology RS / Rackstation and NVR / DVA Surveillance Systems

While DSM 7.3 restores third-party hard drive flexibility on the 2025 DiskStation Plus range, this policy change does not extend to RackStation (RS) or DVA/NVR systems. These models continue to enforce Synology’s restricted compatibility framework, requiring officially verified HAT, HAS, or SAT series drives for full SMART monitoring, health data reporting, and warranty-backed operation. Unverified drives may still function but typically appear with degraded status indicators, limited temperature or lifespan data, and persistent “incompatible” warnings within Storage Manager.

This limitation remains particularly relevant to surveillance deployments, as Synology has yet to certify common NVR-grade drives such as Seagate IronWolf, Seagate SkyHawk, or WD Purple series models. At the time of writing, only one 2025-generation RackStation has been released under this policy, but Synology is expected to expand the line-up significantly into Q1 2026, with new models such as the DVA7400, DVA3000, and additional 4- and 8-bay RS systems all expected to ship with DSM 7.3 pre-installed and to follow the same verified-drive enforcement. As such, administrators planning future rackmount or surveillance deployments should confirm drive support in advance, as Synology shows no signs of relaxing its enterprise compatibility standards for these product tiers.

Should You Upgrade to DSM 7.3? VERDICT

For most existing Synology users, DSM 7.3 stands as a careful, incremental evolution of the platform rather than a major overhaul. It introduces refinements in data protection, encryption handling, and administrative control while restoring a more open stance on third-party hard drive use under the new HCL 5.0 policy. These adjustments address several long-standing user concerns, particularly on the 2025 Plus series, where Synology has finally reintroduced full flexibility for HDD and SSD compatibility. However, outside of that reversal, DSM 7.3’s core updates—such as minor kernel improvements, user interface refinements, and system efficiency tweaks—represent evolutionary stability rather than innovation. The release also marks Synology’s first attempt to integrate AI-based administrative tools and multi-tier storage, but both features remain optional, niche in scope, and better suited to advanced users or multi-NAS deployments. For those running stable DSM 7.2 environments, the upgrade is beneficial but not essential, as few of the new capabilities materially alter day-to-day operations.

That said, DSM 7.3 remains a worthwhile step forward for users who want to align their systems with Synology’s next-generation framework before DSM 8’s eventual release. Owners of newer 2025 models such as the DS925+, DS1525+, or RS2825RP+ will likely find the update unavoidable, as it forms the baseline for upcoming package releases and extended security support. Administrators managing large data environments may also appreciate the improved directory integration, enhanced file versioning, and native exFAT support included in this release. Still, those relying on older Plus or XS-class devices for media, backup, or general storage tasks may prefer to wait for a few minor revisions before upgrading, allowing early adopters to expose any unforeseen issues. DSM 7.3 is polished and well-structured, but it feels transitional—a bridge between legacy DSM 7.2 deployments and the more modern, AI-aware infrastructure Synology is preparing for DSM 8. Unless you specifically require its new storage policies, tiering capabilities, or AI integration, remaining on DSM 7.2 remains a stable, low-risk option for the foreseeable future.

Which Systems Support the DSM 7.3 Upgrade? (Updated List)

The DSM 7.3 (version 7.3-81180) update is available as a manual download for an extensive range of Synology NAS systems, spanning the Plus, XS, SA, FS, HD, Value, and J series. Rollout continues in stages, meaning some users will not yet receive an automatic update notification. Once installed, DSM 7.3 cannot be downgraded to a previous version, and for many older models, it will be the final feature-bearing update, with future maintenance limited to security and stability patches.

The complete set of DSM 7.3 installation files, as listed in Synology’s October 2025 release, confirms support for virtually all NAS models released between 2016 and 2025. Key model families include:

DiskStation desktop systems:
DS1019+, DS116, DS118, DS119j, DS120j, DS124, DS1517+, DS1517, DS1520+, DS1522+, DS1525+, DS1618+, DS1621+, DS1621xs+, DS1817+, DS1817, DS1819+, DS1821+, DS1823xs+, DS1825+, DS216+, DS216, DS216+II, DS216j, DS216play, DS218+, DS218, DS218j, DS218play, DS220+, DS220j, DS223, DS223j, DS224+, DS225+, DS2419+, DS2419+II, DS2422+, DS3018xs, DS3617xs, DS3617xsII, DS3622xs+, DS416, DS416j, DS416play, DS416slim, DS418, DS418j, DS418play, DS419slim, DS420+, DS420j, DS423+, DS423, DS425+, DS620slim, DS716+, DS716+II, DS718+, DS720+, DS723+, DS725+, DS916+, DS918+, DS920+, DS923+, DS925+.

RackStation and enterprise systems:
RS1219+, RS1221+, RS1221RP+, RS1619xs+, RS18016xs+, RS18017xs+, RS217, RS2416+, RS2416RP+, RS2418+, RS2418RP+, RS2421+, RS2421RP+, RS2423+, RS2423RP+, RS2818RP+, RS2821RP+, RS2825RP+, RS3617RPxs, RS3617xs+, RS3617xs, RS3618xs, RS3621RPxs, RS3621xs+, RS4017xs+, RS4021xs+, RS422+, RS816, RS818+, RS818RP+, RS819, RS820+, RS820RP+.

Data-centre and performance platforms:
FS1018, FS2017, FS2500, FS3017, FS3400, FS3410, FS3600, FS6400, HD6500, SA3200D, SA3400, SA3400D, SA3410, SA3600, SA3610, SA6400.

Video analytics and surveillance models:
DVA1622, DVA3219, DVA3221.

Virtual DSM package:
VirtualDSM 7.3-81180.

This dataset confirms that DSM 7.3 has been compiled for almost every currently supported platform, with file sizes ranging from roughly 300 MB for entry-level systems (such as the DS120j and RS217) up to 430 MB for enterprise and FlashStation devices. Users operating 2025-generation systems such as the DS225+, DS425+, DS725+, DS925+, DS1525+, DS1825+, RS2825RP+, and SA3410 will receive DSM 7.3 pre-installed or as part of first-release firmware. For older devices dating back to 2016–2018, DSM 7.3 will act as the final major update before DSM 8 arrives in 2026.

Which Synology NAS will See DSM 7.3 as their LAST Major Synology Update?

The DSM 7.3 (version 7.3-81180) update is available for a wide range of Synology NAS models, though rollout is staged and certain older systems will remain on DSM 7.2 or earlier. It is important to note that DSM 7.3 will be the final major upgrade for many devices, after which they will continue to receive only security and maintenance patches. Users should also be aware that once installed, DSM 7.3 cannot be downgraded.

Models eligible for DSM 7.3 upgrade:
FS Series: FS3017, FS2017, FS1018
XS Series: RS18016xs+, RS4017xs+, RS3617xs+, RS3617xs, RS3617RPxs, RS18017xs+, DS3617xs, DS3617xsII, DS3018xs
Plus Series: RS2416RP+, RS2416+, DS916+, DS716+II, DS716+, DS216+II, DS216+, DS1817+, DS1517+, RS2818RP+, RS2418RP+, RS2418+, RS818RP+, RS818+, DS1618+, DS918+, DS718+, DS218+, RS1219+
Value Series: DS116, DS216, DS216play, DS416, DS416play, DS1517, DS1817, DS418play, RS217, RS816
J Series: DS216j, DS416j, DS416slim, DS419slim, DS418j, DS218j, DS119j

For these devices, DSM 7.3 represents the end of the feature update cycle, effectively marking the transition point toward DSM 8, which will accompany newer 2026 and later hardware. Users operating 2025-series NAS systems that are produced by Synology in 2026 (the DS225+, DS425+, DS725+, DS925+, DS1525+, DS1825+, and RS2825RP+) will receive DSM 7.3 by default and will likely be among the first to transition to DSM 8 once available.

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Is the Synology DS925+, DS1825+, DS1525+, etc NAS OK to Buy Now?

As this change in unverified hard drive support policy by Synology seems to be rolled out in the DSM 7.3 update, that means that currently if you buy and deply a Synology x25 generation NAS, you will still be subject to the restricted HDD deployment status of DSM right now (i.e cannot initialize, cannot RAID build, Rebuild, hot spare, etc unless using a Synology labelled drive or one that eventually might arrive on the compatibility list). So, if you buy the new Synology DS925+, DS1825+ or DS1525+ – unless you were already going to buy Synology hard drive and SSD media, you won’t be able to do very much out the box! So, if you are only considering a Synology NAS right now IF it can be used with 3rd party and/or unverified storage media – DO NOT BUY until the DSM 7.3 update rolls out! You will just be wasting some of your 3 year included warranty whilst you wait!

HOWEVER –If/When you do wish to purchase a Synology NAS, please do use the links below in order to purchase your NAS. Doing so results in a small commission coming to me and Ed here at NASCompares, and it allows us to keep doing what we do here, and is the most frictionless and zero-cost way for you to support our articles, reviews, videos, guides, support systems and more.

Synology DS925+ NAS	Synology DS1525+ NAS	Synology DS1825+ NAS
Check Amazon in Your Region for the Synology DS925+ NAS	Amazon in Your Region for the Synology DS1525+ NAS @ $799	Amazon in Your Region for the Synology DS1825+ NAS @ $1149
heck B&H for the Synology DS925+ NAS	B&H for the Synology DS1525+ NAS @ $1149.99	B&H for the Synology DS1825+ NAS @ $1149.99

 

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Below are further videos from over the course of the last 6+ months that cover the evolution of Synology and this controversial hard drive support policy.

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Finally, for free advice about your setup, just leave a message in the comments below here at NASCompares.com and we will get back to you. Need Help? Where possible (and where appropriate) please provide as much information about your requirements, as then I can arrange the best answer and solution to your needs. Do not worry about your e-mail address being required, it will NOT be used in a mailing list and will NOT be used in any way other than to respond to your enquiry. [contact-form-7] TRY CHAT Terms and Conditions   Alternatively, why not ask me on the ASK NASCompares forum, by clicking the button below. This is a community hub that serves as a place that I can answer your question, chew the fat, share new release information and even get corrections posted. I will always get around to answering ALL queries, but as a one-man operation, I cannot promise speed! So by sharing your query in the ASK NASCompares section below, you can get a better range of solutions and suggestions, alongside my own.

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Need Advice on Data Storage from an Expert?

Finally, for free advice about your setup, just leave a message in the comments below here at NASCompares.com and we will get back to you. Need Help? Where possible (and where appropriate) please provide as much information about your requirements, as then I can arrange the best answer and solution to your needs. Do not worry about your e-mail address being required, it will NOT be used in a mailing list and will NOT be used in any way other than to respond to your enquiry. [contact-form-7] TRY CHAT Terms and Conditions   Alternatively, why not ask me on the ASK NASCompares forum, by clicking the button below. This is a community hub that serves as a place that I can answer your question, chew the fat, share new release information and even get corrections posted. I will always get around to answering ALL queries, but as a one-man operation, I cannot promise speed! So by sharing your query in the ASK NASCompares section below, you can get a better range of solutions and suggestions, alongside my own.

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The Synology Hard Drive and SSD Support Change in DSM 7.3 Explained – What You Can/Cannot Do

With the release of DSM 7.3, Synology has formally introduced its latest and most detailed round of storage compatibility policies to date, outlining exactly which hard drives and solid-state drives are supported across its growing NAS product ecosystem. These updates arrive after several years of gradual tightening in Synology’s hardware validation process, which began in 2021 with the introduction of the HAT5300 and HAT3300 drives and became fully enforced in the 2024–2025 generation of devices. Under DSM 7.2, many of these newer systems—in particular the Plus series—were restricted to using Synology-branded drives only, effectively preventing users from creating storage pools with unverified third-party disks. This limitation led to considerable backlash from the community and power users who had relied on flexible drive choices for mixed or repurposed storage builds.

DSM 7.3 introduces a new structure to this policy, known internally as the HCL 5.0 framework, which partially relaxes those restrictions for 2025 model-year DiskStation Plus and J series NAS systems. It reinstates the ability to use non-listed hard drives and SATA SSDs for pool creation, while maintaining a degree of verification for higher-end systems such as the XS, SA, FS, and HD series. The update is significant because it rebalances Synology’s approach to drive validation, aligning reliability goals with user flexibility. In addition, DSM 7.3’s drive-handling system now displays clearer notifications within Storage Manager, differentiating between listed, unlisted, and incompatible drives, helping users understand the operational impact of their hardware choices before deploying them into active volumes or caches.

For professionals managing larger deployments, DSM 7.3 also provides expanded transparency on what Synology considers “verified reliability,” listing the precise categories of tests that certified drives undergo—thermal stress, power cycle endurance, and abnormal shutdown simulation—before being added to the official compatibility list. These details are especially relevant for IT administrators planning storage upgrades or migrations, as the new compatibility tables make it clear which drive types can be used in different Synology product families. This article breaks down the logic behind these changes, explains how Synology’s updated system reacts to various drive types, and clarifies which NAS lines now support third-party drives under DSM 7.3.

Want to Support What We Do? Use the Links Below to Buy your NAS and/or HDD and SSD Media. Clicking these links will result in a small commission for anything you purchase, heading to me and Eddie @NASCompares and allows us to keep doing this! It’s just us two here and between this and ads, it’s the most passive way to keep us sailing! Thanks

Synology NAS and Media on Amazon – HERE Synology Products on B&H – HERE Seagate Ironwolf Media on Amazon – HERE WD Red Media on Amazon – HERE Seagate Products on B&H – HERE WD Products on B&H – HERE

Why Synology Has Changed Hard Drive and SSD Support in DSM 7.3?

When the Synology 2025 PLUS series launched in spring 2025, Synology’s decision to restrict many newer NAS models to officially approved Synology-branded drives marked a major turning point in the company’s storage policy, triggering widespread criticism across its user base. Systems like the DS923+ and DS1522+ suddenly required drives from Synology’s HAT or SAT ranges for creating new storage pools, leaving long-time users frustrated that they could no longer use trusted third-party disks from vendors such as Seagate or Western Digital. Synology’s explanation at the time centered on reliability: they claimed a growing number of support incidents were linked to unverified drives with unstable firmware, inconsistent temperature readings, or poor power recovery behavior. The aim was to unify performance standards across the portfolio and ensure that every supported configuration met enterprise-grade validation tests already used in their FS and SA lines. However, as the backlash grew throughout 2024 and early 2025, it became clear that many customers—especially small businesses and home users—felt alienated by this rigid policy. Some migrated to alternative NAS ecosystems, while others publicly voiced concerns about the long-term openness of Synology’s platform. In response, Synology developed a new compatibility framework known as HCL 5.0, introduced in DSM 7.3, to strike a balance between reliability and flexibility. This new approach reinstates the ability to use unlisted hard drives and 2.5-inch SATA SSDs for storage pool creation on 2025 DiskStation Plus, Value, and J series models, provided the drives are not explicitly marked as incompatible. Meanwhile, enterprise systems such as the FS, SA, XS, and HD ranges continue to enforce strict compatibility for mission-critical stability. Synology described this as a pragmatic evolution of its policy, aligning with customer expectations while continuing to collaborate with major drive manufacturers to validate additional models under its new testing program. The result is a hybrid policy that protects Synology’s enterprise reliability standards but restores much of the flexibility and user confidence that defined the brand’s earlier systems.

What Happens When a User Installs a Hard Drive That Is Not on the Compatibility List but Is Not on the Incompatibility List Either?

Under DSM 7.3, Synology has overhauled how its NAS systems handle drives that are not officially listed in the compatibility database but are also not explicitly marked as incompatible. This new policy, part of the HCL 5.0 framework, restores the flexibility that was largely lost with DSM 7.2. For users of 2025 DiskStation Plus models, including systems such as the DS1525+, DS925+, and DS725+, these drives are now treated as fully functional and supported for installation, storage pool creation, and volume management. When a non-listed HDD or SATA SSD is installed in these units, DSM 7.3 accepts it without generating warnings, restrictions, or “unverified” messages. The drive behaves identically to a fully approved model, and users can create new RAID arrays, expand existing volumes, and use all standard DSM features such as snapshots, encryption, and Hyper Backup. This marks a significant shift from DSM 7.2, which blocked pool creation entirely if the installed drive was not verified by Synology.

The only distinction that remains is on the support side rather than the user interface. While DSM 7.3 operates normally with these drives, Synology’s technical support team may limit assistance for issues proven to be caused by non-listed hardware. This distinction allows experienced users to use mixed or legacy drives at their discretion while maintaining a clear boundary of responsibility. From a practical standpoint, performance, drive telemetry, and reliability monitoring remain fully available, including S.M.A.R.T. analysis, temperature reporting, and bad sector scanning. Storage pools built with these drives are indistinguishable from those using Synology-validated models, which means users can freely upgrade or migrate without worrying about feature loss.

The only exceptions to this open policy involve M.2 NVMe drives and systems outside the Plus, Value, or J series. NVMe SSDs used for caching or storage pools still require official validation because they endure heavier sustained write loads and generate more heat under continuous NAS workloads. As a result, only listed M.2 models can be used for new cache or pool creation, though previously configured drives can still be migrated. Meanwhile, enterprise-oriented NAS lines such as the RS, FS, SA, and XS series continue to operate under stricter compatibility rules, where only officially listed drives can be used for new storage pool creation. In these systems, non-listed drives can sometimes be recognized for migration, but cannot participate in new arrays or cache volumes.

For most users, this means that DSM 7.3 on the 2025 Plus series finally restores the traditional Synology experience: the ability to use virtually any NAS-grade hard drive or 2.5-inch SSD without restriction. It also removes the previous generation’s unnecessary barriers that alienated long-term customers. Synology has positioned this change as a response to community feedback, reaffirming that flexibility can coexist with reliability. The HCL 5.0 framework is now the baseline for all new consumer and prosumer systems, signaling Synology’s partial return to an open and more user-friendly storage policy.

How Is Hard Drive Compatibility in DSM 7.3 on the Rackstation/RS and NVR/DVA Surveillance NAS Systems?

While the original restrictions are expected (though not wholy welcome) for enterprise-grade units, DSM 7.3 also applies similar limitations to rackmount Plus (RS+) and DVA/NVR models, which has generated frustration among users expecting parity with desktop Plus series devices. Systems such as the RS2423RP+, RS422+, and DVA1622 remain governed by a more conservative policy, where only drives on the compatibility list can be used for new pool creation, and unlisted HDDs are accepted only for migration. In contrast to the new, flexible policy introduced for 2025 DiskStation Plus models, these rackmount and surveillance systems do not yet benefit from the same relaxed rules. This distinction is particularly disappointing given that many surveillance-optimized HDDs—such as Seagate’s SkyHawk or IronWolf ranges—have not yet been verified by Synology for DVA or NVR units, leaving buyers with fewer officially supported choices despite these drives being purpose-built for similar workloads.

The DVA and NVR product lines further complicate matters because their operating environments rely heavily on consistent write performance and power management behavior. Synology’s internal reasoning is that drive validation for continuous surveillance recording requires more predictable I/O latency and lower error recovery times than typical NAS workloads. However, the practical impact is a reduced range of compatible disks, even when many third-party NAS or CCTV-specific drives are known to perform reliably under similar conditions. Until Synology expands its verification program to include these models, administrators deploying rackmount Plus or DVA systems must continue to rely exclusively on officially listed drives or accept limited migration-only functionality.

These restrictions highlight an ongoing inconsistency in Synology’s product ecosystem. DSM 7.3 offers broad flexibility and open drive use on desktop Plus series systems but maintains enterprise-grade rigidity across rackmount Plus and surveillance-focused models. For now, this gap means that users deploying DSM 7.3 on RS or DVA systems cannot benefit from the same simplified, user-friendly drive policy available to standard DiskStation Plus NAS units.

How Is Hard Drive Compatibility in DSM 7.3 on the FS, HD, SA, UC, XS+, XS, and DP Series?

In DSM 7.3, Synology continues to apply the most stringent validation rules across its enterprise and datacenter-class NAS platforms, which include the FS, HD, SA, UC, XS+, XS, RS, and DP series. These systems are built for environments where sustained uptime, predictable throughput, and long-term data integrity are non-negotiable. As a result, they rely entirely on Synology’s Enterprise Compatibility Framework, which only permits the use of drives that have been formally validated and listed on the official compatibility database. These listed drives undergo intensive reliability testing, including extended read/write stress cycles, multi-node redundancy simulations, and controlled recovery from power or network failures. DSM 7.3 enforces this framework to guarantee consistent behavior across RAID arrays and to ensure that firmware-level optimizations, such as error recovery timing and caching algorithms, work as designed with Synology’s proprietary storage stack.

For users of these enterprise models, drives fall into three possible states: listed, not listed, and incompatible. Listed drives are fully supported for installation, storage pool creation, caching, and migration. Drives that are not listed may still appear in Storage Manager but are limited to migration-only use, meaning they can be mounted if they come from an existing Synology system but cannot be initialized for new volumes or RAID groups. This allows data recovery or transition from legacy setups without granting full functionality. Meanwhile, drives on the incompatibility list are blocked entirely and cannot be used in any capacity. These restrictions are designed to prevent firmware mismatches or mechanical inconsistencies that could undermine array stability. In practice, this means that enterprise and rackmount models remain tied to the official drive ecosystem, often limited to Synology’s own HAT or HAS series drives or verified OEM equivalents.

In these product classes, DSM 7.3 also maintains a strict policy for cache and SSD usage. M.2 NVMe drives can only be used for caching or storage pools if they appear on the official compatibility list. Unlisted M.2 drives are detected by the system but cannot be assigned to any cache operation, even for testing purposes. Similarly, 2.5-inch SATA or SAS SSDs that are not verified cannot participate in new array creation, even though they may mount for migration. This conservative approach reflects Synology’s focus on maintaining data integrity over flexibility in its upper-tier systems, where downtime or data corruption can carry substantial business costs. DSM communicates these restrictions clearly during setup: any attempt to use an unsupported drive for new pool creation will trigger a warning explaining that the operation cannot proceed due to compatibility enforcement.

What are the benefits of Buying Synology-branded Hard Drives and SSDs?

In parallel with the policy adjustments introduced in DSM 7.3, Synology has also begun expanding a series of benefits and incentives aimed at customers who purchase Synology NAS systems together with Synology-branded storage media. These initiatives are part of the company’s ongoing effort to strengthen its vertically integrated ecosystem, ensuring optimal performance and reliability when all components come from the same source. In selected markets, buyers who purchase Synology HAT, HAS, or SAT series drives on the same invoice as their NAS hardware now receive extended warranty coverage of up to five years, administered directly through authorized distributors and resellers. In addition, Synology has introduced an Express Replacement program, allowing for immediate drive swaps during the warranty period without waiting for the defective unit to be shipped and inspected, effectively mirroring the convenience of a premium RMA service. These benefits are available at no extra cost when drives are purchased through approved channels. The initiative is designed to make Synology’s validated ecosystem more appealing to businesses seeking predictable lifecycle management and faster recovery in the event of hardware failure, while also providing an incentive for users to standardize on Synology-branded components rather than mixing third-party storage.

Head over to Blackvoid HERE to read Luka’s great write-up on DSM 7.3 below:

DSM 7.3 and Hard Drive / SSD Support Conclusion

DSM 7.3 might well represent the most comprehensive and transparent storage compatibility framework Synology has released to date (after years of obviscation and unclear messaging), but it also reinforces a clear divide between its consumer and enterprise platforms. The introduction of the HCL 5.0 policy marks a pragmatic shift from the heavily restricted DSM 7.1/7.2 model, restoring the flexibility that long-time users had relied on for more than a decade. On the 2025 DiskStation Plus series, users can once again install and operate any third-party NAS-grade HDD or SATA SSD without limitation, bringing back the open and adaptable system design that helped define Synology’s reputation. This balance between openness and validation shows the company’s recognition of user feedback and its effort to rebuild trust after widespread criticism of its earlier drive-locking policy. By maintaining full functionality for unlisted drives while still reserving strict validation for high-end hardware, DSM 7.3 offers a compromise that keeps consumer-grade systems practical and professional-grade systems predictable. Not ideal, but better than what was already in place.

However, DSM 7.3 also underlines the growing separation between Synology’s desktop Plus models and its rackmount Plus, DVA, and enterprise systems. While home and small-business users benefit from restored flexibility, administrators working with rackmount or surveillance solutions remain tied to tightly controlled drive lists. The continued exclusion of common NAS and NVR-grade drives—such as Seagate IronWolf and SkyHawk or WD Purple series—from the verified list limits adoption and drives up deployment costs, particularly for surveillance users who require high-capacity, continuous-write storage. Until Synology expands its validation program or aligns its rackmount Plus systems with the same drive-handling rules as its desktop equivalents, this divide will remain a sticking point. DSM 7.3 is therefore both a meaningful correction and a reminder that Synology’s storage policy continues to evolve in response to user pressure. It moves the platform back toward flexibility without abandoning its enterprise reliability philosophy, but the differences between product tiers are now more visible than ever.

Want to Support What We Do? Use the Links Below to Buy your NAS and/or HDD and SSD Media. Clicking these links will result in a small commission for anything you purchase, heading to me and Eddie @NASCompares and allows us to keep doing this! It’s just us two here and between this and ads, it’s the most passive way to keep us sailing! Thanks

Synology NAS and Media on Amazon – HERE Synology Products on B&H – HERE Seagate Ironwolf Media on Amazon – HERE WD Red Media on Amazon – HERE Seagate Products on B&H – HERE WD Products on B&H – HERE

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This description contains links to Amazon. These links will take you to some of the products mentioned in today's content. As an Amazon Associate, I earn from qualifying purchases. Visit the NASCompares Deal Finder to find the best place to buy this device in your region, based on Service, Support and Reputation - Just Search for your NAS Drive in the Box Below

Need Advice on Data Storage from an Expert?

Finally, for free advice about your setup, just leave a message in the comments below here at NASCompares.com and we will get back to you. Need Help? Where possible (and where appropriate) please provide as much information about your requirements, as then I can arrange the best answer and solution to your needs. Do not worry about your e-mail address being required, it will NOT be used in a mailing list and will NOT be used in any way other than to respond to your enquiry. [contact-form-7] TRY CHAT Terms and Conditions   Alternatively, why not ask me on the ASK NASCompares forum, by clicking the button below. This is a community hub that serves as a place that I can answer your question, chew the fat, share new release information and even get corrections posted. I will always get around to answering ALL queries, but as a one-man operation, I cannot promise speed! So by sharing your query in the ASK NASCompares section below, you can get a better range of solutions and suggestions, alongside my own.

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Synology (FINALLY) Gives In to 3rd Party HDD Support in 2025 PLUS Series NAS

7/10/25 – Updated with information supplied by Synology on how verifications and product ranges will support different HDD/SSD in DSM 7.3

Of all the stories of 2025, very few had the level of impact on the NAS industry that the Hard Drive support policy change by Synology did. Arguably THE name in the world of turnkey NAS, Synology enjoyed a fairly spotless reputation up until recent years, but when their gradual first-party support stance took a very drastic acceleration in April 2025 with a complete lockout of HDDs from Seagate and WD for their 2025 generation of hardware, the industry responded very, very unfavourably (Ed – understatement of the YEAR). Over the months that followed, even some of the biggest tech platforms and consumer rights focused media outlets on the internet made damning statements about the brand’s actions, previously very Synology-friendly outlets either criticised the move or simply ceased covering Synology, and even typically heavily supportive Synology-associated platforms such as the Synology subreddit and yes even here at NASCompares were keen to highlight every inconsistent turn of this story. After six months of heavy fire, undoubtedly poor sales of the 7–8 released Synology 2025 generation hardware launches in that time (eg DS925+, DS1825+, DS425+, etc), repeated missteps by the brand in user engagement (such as disabling comments on videos, contradictory press statements and baffling justifications around hardware)… now… NOW the brand has announced that you will once again be able to use Seagate and WD Hard Drives on the Synology 2025 generation of devices – and importantly, this time without the level of shouted alerts and warnings. So, let’s discuss when this WD and Seagate Hard Drive media support is coming back, what are the limits, is this too little too late and whether all this was ever worth it for Synology.

When and How Will Third-Party Hard Drive Support Return to the 2025 Synology NAS?

Synology has detailed that third-party hard drive support will return to 2025 devices alongside the rollout of DSM 7.3, the next major update to the Synology software platform. Unlike previous statements earlier this year, this U-turn now means that Seagate and WD drives will not only be usable again but also with a significant reduction (possibly even complete removal – still awaiting exact testing of DSM 7.3 ourselves) from the constant “unverified drive” and “at risk” warnings that plagued users. This represents a return to the compatibility model users were familiar with before 2025. Exact rollout dates of the DSM 7.3 update are still pending (likely Q4 2025 or early Q1 2026), but this will mark the point where Synology’s 2025 NAS systems no longer block unsupported drives at installation. Until that update arrives and users proceed with it’s installation, Synology 2025 systems will of course still not allow unconfirmed media to initialise DSM. Likewise, it remains unclear how the update will interact with users who have already employed community scripts to bypass restrictions – whether these fixes will still be needed, or whether DSM 7.3 will overwrite them entirely.

Another important detail is how far this reinstated compatibility extends. According to Synology’s new position in the DSM 7.3 rollout, users will again be able to initialise DSM, create storage pools, volumes, run disk checks, expand pools, perform RAID repairs and create hot spare disks – essentially restoring the same functionality that was lost earlier this year. Crucially, the obtrusive warning messages that previously accompanied unsupported drives will be removed, which means the user experience should be indistinguishable from older Synology generations. Synology has stated that testing of specific Seagate and WD drives was still “ongoing” in the last 6 months, but this appears largely academic now, since DSM 7.3 will no longer enforce the same restrictions. Which brings into question the validity of those claims. In practice though, this means users can once again choose from the wider drive market, without fear of blocked features or disruptive alerts. It is still not 100% clear on what the position regarding M.2 NVMe SSDs and Storage Pool use will be, as well as if this is going to be completely brand wide – or just affecting the PLUS series new and old that are eligible for the DSM 7.3 update.

The Alerts and ‘Warnings’ that users have gotten used to up tll now (i.e pre DSM 7.3 roll out):

To confirm, the current 2025 systems that primarily this Synology U-turn on Hard Drive compatibility in DSM would affect are:

• Synology DS925+
• Synology DS1525+
• Synology DS725+
• Synology DS1825+
• Synology DS425+
• Synology DS225+
• Synology RS2825RP+

Previous PLUS series devices did not arrive with the exceedingly strict ‘no verified = no initialization’ rule that the above system’s had, so although these will benefit in DSM 7.3 with lessened warnings that they currently had, it is not the deal breaker proposition that it is/was in the x25 series.

However, let’s return to the point. Was ALL of this chaos by Synology worth it? Was there actually a coherent strategy in place here? Let’s discuss the damage that the last 6 months have caused.

What Happens When a User Installs a Hard Drive That Is Not on the Compatibility List but Is Not on the Incompatibility List Either?

Under DSM 7.3, Synology has overhauled how its NAS systems handle drives that are not officially listed in the compatibility database but are also not explicitly marked as incompatible. This new policy, part of the HCL 5.0 framework, restores the flexibility that was largely lost with DSM 7.2. For users of 2025 DiskStation Plus models, including systems such as the DS1525+, DS925+, and DS725+, these drives are now treated as fully functional and supported for installation, storage pool creation, and volume management. When a non-listed HDD or SATA SSD is installed in these units, DSM 7.3 accepts it without generating warnings, restrictions, or “unverified” messages. The drive behaves identically to a fully approved model, and users can create new RAID arrays, expand existing volumes, and use all standard DSM features such as snapshots, encryption, and Hyper Backup. This marks a significant shift from DSM 7.2, which blocked pool creation entirely if the installed drive was not verified by Synology.

The only distinction that remains is on the support side rather than the user interface. While DSM 7.3 operates normally with these drives, Synology’s technical support team may limit assistance for issues proven to be caused by non-listed hardware. This distinction allows experienced users to use mixed or legacy drives at their discretion while maintaining a clear boundary of responsibility. From a practical standpoint, performance, drive telemetry, and reliability monitoring remain fully available, including S.M.A.R.T. analysis, temperature reporting, and bad sector scanning. Storage pools built with these drives are indistinguishable from those using Synology-validated models, which means users can freely upgrade or migrate without worrying about feature loss.

The only exceptions to this open policy involve M.2 NVMe drives and systems outside the Plus, Value, or J series. NVMe SSDs used for caching or storage pools still require official validation because they endure heavier sustained write loads and generate more heat under continuous NAS workloads. As a result, only listed M.2 models can be used for new cache or pool creation, though previously configured drives can still be migrated. Meanwhile, enterprise-oriented NAS lines such as the RS, FS, SA, and XS series continue to operate under stricter compatibility rules, where only officially listed drives can be used for new storage pool creation. In these systems, non-listed drives can sometimes be recognized for migration, but cannot participate in new arrays or cache volumes.

For most users, this means that DSM 7.3 on the 2025 Plus series finally restores the traditional Synology experience: the ability to use virtually any NAS-grade hard drive or 2.5-inch SSD without restriction. It also removes the previous generation’s unnecessary barriers that alienated long-term customers. Synology has positioned this change as a response to community feedback, reaffirming that flexibility can coexist with reliability. The HCL 5.0 framework is now the baseline for all new consumer and prosumer systems, signaling Synology’s partial return to an open and more user-friendly storage policy.

How Is Hard Drive Compatibility in DSM 7.3 on the Rackstation/RS and NVR/DVA Surveillance NAS Systems?

While the original restrictions are expected (though not wholy welcome) for enterprise-grade units, DSM 7.3 also applies similar limitations to rackmount Plus (RS+) and DVA/NVR models, which has generated frustration among users expecting parity with desktop Plus series devices. Systems such as the RS2423RP+, RS422+, and DVA1622 remain governed by a more conservative policy, where only drives on the compatibility list can be used for new pool creation, and unlisted HDDs are accepted only for migration. In contrast to the new, flexible policy introduced for 2025 DiskStation Plus models, these rackmount and surveillance systems do not yet benefit from the same relaxed rules. This distinction is particularly disappointing given that many surveillance-optimized HDDs—such as Seagate’s SkyHawk or IronWolf ranges—have not yet been verified by Synology for DVA or NVR units, leaving buyers with fewer officially supported choices despite these drives being purpose-built for similar workloads.

The DVA and NVR product lines further complicate matters because their operating environments rely heavily on consistent write performance and power management behavior. Synology’s internal reasoning is that drive validation for continuous surveillance recording requires more predictable I/O latency and lower error recovery times than typical NAS workloads. However, the practical impact is a reduced range of compatible disks, even when many third-party NAS or CCTV-specific drives are known to perform reliably under similar conditions. Until Synology expands its verification program to include these models, administrators deploying rackmount Plus or DVA systems must continue to rely exclusively on officially listed drives or accept limited migration-only functionality.

These restrictions highlight an ongoing inconsistency in Synology’s product ecosystem. DSM 7.3 offers broad flexibility and open drive use on desktop Plus series systems but maintains enterprise-grade rigidity across rackmount Plus and surveillance-focused models. For now, this gap means that users deploying DSM 7.3 on RS or DVA systems cannot benefit from the same simplified, user-friendly drive policy available to standard DiskStation Plus NAS units.

How Is Hard Drive Compatibility in DSM 7.3 on the FS, HD, SA, UC, XS+, XS, and DP Series?

In DSM 7.3, Synology continues to apply the most stringent validation rules across its enterprise and datacenter-class NAS platforms, which include the FS, HD, SA, UC, XS+, XS, RS, and DP series. These systems are built for environments where sustained uptime, predictable throughput, and long-term data integrity are non-negotiable. As a result, they rely entirely on Synology’s Enterprise Compatibility Framework, which only permits the use of drives that have been formally validated and listed on the official compatibility database. These listed drives undergo intensive reliability testing, including extended read/write stress cycles, multi-node redundancy simulations, and controlled recovery from power or network failures. DSM 7.3 enforces this framework to guarantee consistent behavior across RAID arrays and to ensure that firmware-level optimizations, such as error recovery timing and caching algorithms, work as designed with Synology’s proprietary storage stack.

For users of these enterprise models, drives fall into three possible states: listed, not listed, and incompatible. Listed drives are fully supported for installation, storage pool creation, caching, and migration. Drives that are not listed may still appear in Storage Manager but are limited to migration-only use, meaning they can be mounted if they come from an existing Synology system but cannot be initialized for new volumes or RAID groups. This allows data recovery or transition from legacy setups without granting full functionality. Meanwhile, drives on the incompatibility list are blocked entirely and cannot be used in any capacity. These restrictions are designed to prevent firmware mismatches or mechanical inconsistencies that could undermine array stability. In practice, this means that enterprise and rackmount models remain tied to the official drive ecosystem, often limited to Synology’s own HAT or HAS series drives or verified OEM equivalents.

In these product classes, DSM 7.3 also maintains a strict policy for cache and SSD usage. M.2 NVMe drives can only be used for caching or storage pools if they appear on the official compatibility list. Unlisted M.2 drives are detected by the system but cannot be assigned to any cache operation, even for testing purposes. Similarly, 2.5-inch SATA or SAS SSDs that are not verified cannot participate in new array creation, even though they may mount for migration. This conservative approach reflects Synology’s focus on maintaining data integrity over flexibility in its upper-tier systems, where downtime or data corruption can carry substantial business costs. DSM communicates these restrictions clearly during setup: any attempt to use an unsupported drive for new pool creation will trigger a warning explaining that the operation cannot proceed due to compatibility enforcement.

What are the benefits of Buying Synology-branded Hard Drives and SSDs?

In parallel with the policy adjustments introduced in DSM 7.3, Synology has also begun expanding a series of benefits and incentives aimed at customers who purchase Synology NAS systems together with Synology-branded storage media. These initiatives are part of the company’s ongoing effort to strengthen its vertically integrated ecosystem, ensuring optimal performance and reliability when all components come from the same source. In selected markets, buyers who purchase Synology HAT, HAS, or SAT series drives on the same invoice as their NAS hardware now receive extended warranty coverage of up to five years, administered directly through authorized distributors and resellers. In addition, Synology has introduced an Express Replacement program, allowing for immediate drive swaps during the warranty period without waiting for the defective unit to be shipped and inspected, effectively mirroring the convenience of a premium RMA service. These benefits are available at no extra cost when drives are purchased through approved channels. The initiative is designed to make Synology’s validated ecosystem more appealing to businesses seeking predictable lifecycle management and faster recovery in the event of hardware failure, while also providing an incentive for users to standardize on Synology-branded components rather than mixing third-party storage.

Head over to Blackvoid HERE to read Luka’s great write-up on DSM 7.3 below:

Is it Too Little, Too Late? Is the Damage to the Synology Brand Already Done?

It’s a valid point. As mentioned in the intro, Synology has been a brand that, short of a few knocks along the way, has had a sterling reputation. Although their hardware has often been a little underwhelming, the software and services have been largely A1. But the move by Synology in restricting the use of drives from brands such as Seagate and WD burned A LOT of bridges. One cannot imagine that Western Digital or Seagate Technology were especially pleased by the rebuke either. The backlash was immediate and huge. Numerous sources I have spoken to in Europe and the U.S regarding Synology PLUS series sales (even for the 2023/22/21 ranges) confirmed the same sentiment: “Synology Diskstation sales were at a fraction of the previous year.” How much these support changes impacted enterprise solutions is unconfirmed, but given the number of sys-admins who quietly admitted to changing their buying plans, and sales teams who admitted recommending other vendors when Synology quotes became less competitive, the damage over the last 6 months has been palpable.

However, what about the next six months? Or the next 12 or 24? The timing of Synology’s disastrous hard drive support policy flip-flop could hardly have been worse. Alongside tech buyers (home and business) having tighter budgets due to rising costs, international trade tariffs being debated, new players entering the NAS industry, and rising expectations of what a system should do, Synology could not have chosen a worse moment for an unpopular policy. Many users who saw the way the policy was rolled out interpreted it as “the writing on the wall” and changed their stance on the brand. Some already jumped ship to alternative vendors, and others opted for older Synology hardware from pre-2025 ranges to avoid the lockout. For those buyers, the fact that the restrictions are now being removed will feel like a bitter twist – they could have had the newer hardware with the same freedom if they had simply waited a little longer.

How much of this shift can be attributed to public and media backlash is hard to quantify, but the scale of the U-turn speaks for itself. This is not the first time Synology has reversed course under pressure. Back in 2021/22, when DSM 7.0 introduced the earliest versions of its compatibility enforcement with red critical warnings, the outcry forced a retreat in DSM 7.1 to amber warnings instead (read here). History has now repeated itself on a much bigger stage. The difference is that this time, months of poor reviews, negative coverage, and lost sales will remain part of the public record, and Synology will struggle to erase that damage.

Much like QNAP and its long-running association with Deadbolt ransomware attacks, Synology may find that users do not easily forget this saga. For months, the internet has been awash with angry comments, critical reviews, and valid frustration at the brand’s direction. Even with DSM 7.3 restoring full drive freedom, the stigma of this six-month debacle will linger. Some users will never return. Others will approach Synology with renewed caution, mindful that the company could change course again in the future. The reaction from existing and potential Synology PLUS series NAS users was loud enough that I felt compelled to make two videos SPECIFICALLY because users were DM’ing and commenting about why I/NASCompares was continuing in our coverage of this brand:

Is the Synology DS925+, DS1825+, DS1525+, etc NAS OK to Buy Now?

As this change in unverified hard drive support policy by Synology seems to be rolled out in the DSM 7.3 update, that means that currently if you buy and deply a Synology x25 generation NAS, you will still be subject to the restricted HDD deployment status of DSM right now (i.e cannot initialize, cannot RAID build, Rebuild, hot spare, etc unless using a Synology labelled drive or one that eventually might arrive on the compatibility list). So, if you buy the new Synology DS925+, DS1825+ or DS1525+ – unless you were already going to buy Synology hard drive and SSD media, you won’t be able to do very much out the box! So, if you are only considering a Synology NAS right now IF it can be used with 3rd party and/or unverified storage media – DO NOT BUY until the DSM 7.3 update rolls out! You will just be wasting some of your 3 year included warranty whilst you wait!

HOWEVER –If/When you do wish to purchase a Synology NAS, please do use the links below in order to purchase your NAS. Doing so results in a small commission coming to me and Ed here at NASCompares, and it allows us to keep doing what we do here, and is the most frictionless and zero-cost way for you to support our articles, reviews, videos, guides, support systems and more.

Synology DS925+ NAS	Synology DS1525+ NAS	Synology DS1825+ NAS
Check Amazon in Your Region for the Synology DS925+ NAS	Amazon in Your Region for the Synology DS1525+ NAS @ $799	Amazon in Your Region for the Synology DS1825+ NAS @ $1149
heck B&H for the Synology DS925+ NAS	B&H for the Synology DS1525+ NAS @ $1149.99	B&H for the Synology DS1825+ NAS @ $1149.99

 

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Below are further videos from over the course of the last 6+ months that cover the evolution of Synology and this controversial hard drive support policy.

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Need Advice on Data Storage from an Expert?

Finally, for free advice about your setup, just leave a message in the comments below here at NASCompares.com and we will get back to you. Need Help? Where possible (and where appropriate) please provide as much information about your requirements, as then I can arrange the best answer and solution to your needs. Do not worry about your e-mail address being required, it will NOT be used in a mailing list and will NOT be used in any way other than to respond to your enquiry. [contact-form-7] TRY CHAT Terms and Conditions   Alternatively, why not ask me on the ASK NASCompares forum, by clicking the button below. This is a community hub that serves as a place that I can answer your question, chew the fat, share new release information and even get corrections posted. I will always get around to answering ALL queries, but as a one-man operation, I cannot promise speed! So by sharing your query in the ASK NASCompares section below, you can get a better range of solutions and suggestions, alongside my own.

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Prime Big Deal Day Bargains on Synology, QNAP, UGREEN, Terramaster, Seagate and More to Watch

That’s right, it’s that time once again—Amazon Prime Big Deal Day 2025 has arrived. The biggest e-retail giant in the world is rolling out its annual mega sale, and for those of us with a Prime subscription quietly siphoning cash every month, now’s the time to get something back. Whether you’re a home user looking to back up your devices or a business admin in need of robust storage solutions, Prime Day has consistently proven to be a great opportunity to upgrade your setup without breaking the bank. Unlike Black Friday—which tends to sprawl out across weeks and multiple platforms—Prime Day is a more concentrated event. That means the window to make a decision is often brief, and the best deals can vanish in hours, sometimes even minutes. So if you’re eyeing that NAS you’ve been meaning to buy or hoping to expand your RAID array with some fresh HDDs or SSDs, now’s the time to act fast. Today, we’re rounding up as many of the best Amazon Prime Day deals on NAS and storage tech as we can find. That includes offers on popular brands like Synology, QNAP, WD, Seagate, Terramaster, and others. Alongside the real-time deals that we (me and Eddie—yes, still working double shifts!) track throughout the event, we’ve also put together a list of recommended hardware to watch for. Many of these devices pop up on lightning deals with limited stock, so having a shortlist in mind can really help.

Important Note – Every year, we run these Prime Day and Black Friday deal pages the same way: by personally curating the offers we believe are genuinely worth it. If it’s not something we’d buy ourselves, we won’t include it. You can also contribute and share any bargains you come across using the community deal-sharing tool below. We do this for a couple of reasons. First, to help people make smarter decisions with their tech purchases. Second, because every time someone clicks a deal link and makes a purchase, we receive a small commission from Amazon—no extra cost to you. That affiliate income directly supports the site and allows us to keep producing NAS guides, reviews, and how-to content every single day. So, whether you’re looking to finally set up your first Plex server, expand your surveillance system, or just secure a better backup routine—there’s a good chance something will be on offer during Prime Day 2025. And if you’re unsure what’s right for your setup, don’t forget you can always use our Free Advice service for tailored recommendations.

Let’s dive into the deals!

In a hurry? Go directly to the official Prime Day deals list pages here:

• Amazon U.S Prime Day Deals Page HERE
• Amazon UK Prime Day Deals Page HERE
• Amazon Germany Prime Day Deals Page HERE

NOTE – This page will be updated hourly, starting October 7th 2025. Stay Tuned!

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UGREEN DXP4800 PLUS NAS – 20% Price Drop – HERE

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Seagate 24TB USB External Backup Drive – 21% OFF, NOW $259.99

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Synology DS124 1-Bay NAS (4 Core, 1GB). 22% OFF, Now $139.99 

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Lexar 8TB NM790 S4x4 8TB SSD – 32% OFF, NOW $499.88

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AOOSTAR 4Bay Ryzen7 5825U NAS – 15% OFF HERE

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GL.iNet GL-BE3600 (Slate 7) Travel Router – 29% OFF, Now $120.99

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WD Blue SN5000 4TB SSD (29% OFF), NOW £194.73 / $199

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UGREEN NAS UPS, 120W – was £99 NOW $84.99 (15% OFF)

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TERRAMASTER F2-425 2025 NAS – 20% PRICE DROP

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Yxk Zero1 2-Bay NAS (4 Core, 2GB, 2.5G), 33% OFF – Now $99

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GMKtec Mini PC NAS (New Version) now 23% OFF, Now $229

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QNAP TS-233 2-Bay NAS, Now 15% OFF (Now £152.15) HERE

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GL.iNet GL-XE3000 (Puli AX) 5G SIM/LTE Router – 22% OFF, NOW $369.99

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Western Digital 14TB Elements USB  Drive – (39% off) NOW $169.99)

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UGREEN 20-25% OFF NAS Devices During Amazon Prime Day Deals

UGREEN continues to make alot of noise in the world of NAS, and during the Prime Big Deals Day event, they are reducing the price of all their NAS range (starting from the cost effective DH4300 and all the way upto the beefy DXP8800 PLUS) by upto 25%. You can find out more on their main page here, alternatively, each of the devices on offer is listed below:

AMAZON PAGE – UGREEN PAGE	AMAZON PAGE – UGREEN PAGE	AMAZON PAGE – UGREEN PAGE
AMAZON PAGE – UGREEN PAGE	AMAZON PAGE – UGREEN PAGE	AMAZON PAGE – UGREEN PAGE

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UPTO 30% off Terrmaster NAS and DAS During Prime Big Deals Day

Terramaster will be running deals of upto 30% across their latest 2024/2025 range of solutions from Prime Members. You can visit the page by clicking below or clicking HERE (Remember, offers do not start till October 7th)

F4 SSD NAS 4-Bay	F4-424 Max NAS 4-Bay	F8 SSD Plus NAS 8-Bay

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Gl.iNet upto 30% OFF Mobile Routers and KVM Devices

Pretty much the community darling when it comes to mobile router technology, Gl.inet has published several promotions around their mobile router devices, as well as their recent KVM devices (not the comet pro though!). Although alot of devices are on offer at the moment, the standout promotions include the recently lightweight Flint 3 WiFi 7 router, the Slate 7 Mobile WiFi 7 router, and the BEAST that is the PuliAX Mobile and multi-deployment SIM Router. See below:

Click Product to Head to Amazon for the Prime Day Deal:

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Terramaster F8 SSD PLUS, i3 CPU 8x M.2 10GbE NAS Now $639.99

 

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————–  Useful Links  —————

US Amazon – Amazon USA Prime Day Official Page – Amazon UK Prime Day Official Page

Amazon Warehouse (20% Off Everything on Prime Day)

USA – UK – Germany

Still unsure of what you need – use the Free Advice Section here on NASCompares.

 

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This description contains links to Amazon. These links will take you to some of the products mentioned in today's content. As an Amazon Associate, I earn from qualifying purchases. Visit the NASCompares Deal Finder to find the best place to buy this device in your region, based on Service, Support and Reputation - Just Search for your NAS Drive in the Box Below

Need Advice on Data Storage from an Expert?

Finally, for free advice about your setup, just leave a message in the comments below here at NASCompares.com and we will get back to you. Need Help? Where possible (and where appropriate) please provide as much information about your requirements, as then I can arrange the best answer and solution to your needs. Do not worry about your e-mail address being required, it will NOT be used in a mailing list and will NOT be used in any way other than to respond to your enquiry. [contact-form-7] TRY CHAT Terms and Conditions   Alternatively, why not ask me on the ASK NASCompares forum, by clicking the button below. This is a community hub that serves as a place that I can answer your question, chew the fat, share new release information and even get corrections posted. I will always get around to answering ALL queries, but as a one-man operation, I cannot promise speed! So by sharing your query in the ASK NASCompares section below, you can get a better range of solutions and suggestions, alongside my own.

WE LOVE COFFEE

 

Review of the UGREEN NAS UPS – Is the US3000 120W UPS Any Good?

The UGREEN US3000 is a 120 W DC uninterruptible power supply developed specifically for UGREEN NAS devices that rely on an external DC power brick. Unlike conventional UPS systems that convert AC to DC, this model outputs direct 12 V DC power with a zero-second transfer time, ensuring there is no interruption during a power loss. It is equipped with a 12,000 mAh lithium-ion battery pack made up of four 3000 mAh cells, providing a rated energy of 43.2 Wh and up to around ten minutes of backup time depending on workload. Measuring 120.6 × 80.5 × 29.6 mm and weighing approximately 439 g, the US3000 is compact enough for desktop environments where space is limited. Beyond supplying short-term emergency power, it integrates with UGOS Pro software via a USB communication cable, allowing automated shutdown, timed standby, and restart once power is restored. This focus on seamless hardware and software compatibility makes the US3000 notable for users running UGREEN NAS systems that need to mitigate risks of data corruption caused by sudden outages.

UGREEN US3000 UPS Review – Quick Conclusion

The UGREEN US3000 is a purpose-built DC UPS that prioritizes seamless integration with UGREEN NAS systems over broad flexibility. Its compact aluminum chassis houses a 12,000 mAh lithium-ion battery pack capable of delivering 120 W output with zero-second transfer time, ensuring that a connected NAS continues running long enough to perform a safe shutdown. Unlike traditional AC-based UPS units, it avoids conversion inefficiency by supplying direct DC power, while its USB link with UGOS Pro enables automatic shutdown, timed standby, and restart functions. Testing confirmed reliable operation across scenarios from immediate power loss to scheduled shutdowns, with system logs capturing events in under two seconds. However, its design is deliberately narrow in scope: it supports only one NAS at a time, does not extend to routers or switches, and offers limited runtime of around ten minutes under load. For users operating within the UGREEN ecosystem, it provides an efficient and well-integrated safeguard against data corruption during outages. For those needing multi-device protection or long-duration backup, its constrained design and compatibility limit its broader applicability.

Check Amazon for the UGREEN US3000 UPS

Check AliExpress for the UGREEN US3000 UPS

Why the UGREEN US3000 UPS is Important/Interesting

Uninterruptible power supplies are not new, but most consumer models are designed for general computing and rely on bulky lead-acid batteries with AC pass-through. The UGREEN US3000 differs by offering a DC-to-DC solution that matches the external power design of UGREEN NAS units. This means it eliminates the inefficiency of double conversion and avoids the audible transfer delays that can occur with traditional UPS hardware. With a 120 W output ceiling, it is tailored for single-device use rather than multiple systems, but that specificity ensures closer integration with the NAS’s power and shutdown controls. From a technical perspective, its lithium-ion battery pack offers greater energy density than lead-acid, allowing the device to remain compact while still covering several minutes of safe system operation during an outage.

The importance of this UPS becomes clearer when examining how it interacts with UGOS Pro. Unlike generic solutions, the US3000 communicates directly with the NAS operating system via a USB connection, exposing monitoring and automation options in the control panel. Users can configure automatic shutdown after a set period, trigger standby to conserve remaining charge, or enable auto-restart once mains power returns. These features are not just convenient but directly address the risks of corrupted writes, incomplete backups, or damaged RAID arrays during sudden power loss. Given that UGREEN NAS systems are designed for small offices and home use, where environments may not include larger enterprise-grade UPS equipment, the US3000 effectively bridges that gap by offering a purpose-built, compact, and integrated safeguard.

UGREEN US3000 UPS Review – Design

The UGREEN US3000 follows a compact, rectangular form factor with dimensions of 120.6 mm in length, 80.5 mm in width, and 29.6 mm in thickness. Its weight of just under 440 g makes it relatively lightweight for a UPS, reflecting its focus on portability and single-device deployment rather than large-scale power protection. The outer chassis is made from anodized and sandblasted aluminum alloy, which gives it improved durability compared with plastic housings and also aids in passive heat dissipation. The choice of materials ensures a consistent finish that aligns visually with UGREEN’s NAS enclosures, providing an integrated appearance when the two devices are used together on a desktop.

Connectivity is handled entirely through DC and USB ports positioned on a single side of the device. The panel includes a DC input, a DC output, a USB-C port for data communication, and a power button. The fixed DC cable has a length of approximately 28 cm, while the included USB-A to USB-C cable measures around 53 cm, allowing flexible placement next to a NAS system without excess cabling. Each port and control is clearly labeled with printed icons, reducing the likelihood of incorrect setup. Unlike conventional UPS systems that feature multiple AC sockets, the US3000 focuses on a single dedicated output, reflecting its intended role as a companion unit for UGREEN NAS models rather than a general-purpose UPS.

The packaging of the device mirrors UGREEN’s approach with its NAS line, offering clear product imagery and specification highlights on the box exterior. Inside, the unit is provided with a base stand for stable positioning, the aforementioned data cable, and basic documentation. This is a minimalist package compared to conventional UPS units, which often include multiple adaptors or accessories, but the streamlined approach ensures that setup remains straightforward for the intended NAS integration. The inclusion of a stand is particularly useful given the slim design, as it helps keep the UPS stable in vertical placement while maintaining airflow around the chassis.

From a design perspective, the emphasis is on simplicity and integration rather than flexibility. The device does not feature multiple voltage outputs, nor does it support powering unrelated devices such as routers or switches. Instead, its DC pass-through design, small footprint, and single-device orientation mark it as a specialized tool. This aligns with UGREEN’s approach of building a controlled ecosystem around its NAS systems, where accessories are engineered for direct compatibility. The US3000 therefore sits between consumer-grade battery packs and enterprise UPS units, offering a focused solution that fits into a narrow but clearly defined usage scenario.

UGREEN US3000 UPS Review – Internal Power Design

Inside the UGREEN US3000 is a straightforward but carefully constructed layout built around a 12,000 mAh lithium-ion battery pack. The pack consists of four SunPower INR18650-3000 cells, each rated at 3000 mAh and 11.1 Wh, connected in series to deliver a combined rated energy of 43.2 Wh at 14.4 V. The cells are wrapped in foam insulation and secured with adhesive to minimize movement, with spot-welded nickel strips linking them. Additional barley paper insulation is applied around the terminals for added protection. This design choice allows the UPS to maintain compact dimensions while ensuring sufficient runtime for controlled NAS shutdowns.

Battery management is handled by a Chipsea CBM8580KV6NT protection IC. This chip monitors voltage, current, and temperature across the pack, ensuring safe charging and discharge cycles. It communicates with the system host via SMBus 3.1, which enables the UPS to relay real-time status to the NAS when connected through USB. Supporting components include current sense resistors, thermistors, and MOSFETs for switching and power regulation. Together, these ensure not only that the battery operates safely but also that the UPS can reliably deliver 120 W maximum output without voltage instability.

Voltage conversion is performed by a dual-stage arrangement. A Texas Instruments TPS55289 synchronous buck-boost converter handles a wide input range up to 30 V and can output between 0.8 V and 22 V. Alongside this, a SouthChip SC8002 synchronous buck controller manages current limiting and efficiency across dual channels. Power MOSFETs from CR MICRO and NCEPower are used for pass-through control and output switching, while a GigaDevice GD32F303RCT6 Cortex-M4 microcontroller coordinates the overall system, including communication with the NAS. Passive cooling, adhesive reinforcement on inductors and capacitors, and fuses at both input and battery ends further underline the design focus on stability and safety.

UGREEN US3000 UPS Review – Testing with UGREEN NASync Systems

To evaluate the UGREEN US3000, three operational scenarios were simulated: immediate power loss with continued operation, automatic shutdown under UPS control, and timed shutdown with automatic restart when power returned. In each case, the NAS was connected to the UPS using both the DC input and USB communication cable to ensure full integration with UGOS Pro. The first test involved disconnecting mains power to replicate an outage. The NAS continued running without interruption, with the transfer to battery occurring instantly. System logs registered the event in under two seconds, and normal file access, media playback, and downloads remained available until the battery level dropped to the configured threshold.

In the second test, the system was configured to shut down automatically as soon as the UPS switched to battery mode. Once power was removed, the NAS immediately began its shutdown process. This test showed that the UPS integration with UGOS Pro allowed a fast and orderly shutdown sequence, preventing data corruption or incomplete writes. The reaction time was near instantaneous, and the system was powered down safely without user intervention. This mode may be best suited for environments where uptime during an outage is less critical than ensuring rapid data protection.

A third test focused on timed shutdown, with the UPS set to keep the NAS running for five minutes before initiating a safe power-off. Once mains power was disconnected, the NAS continued operating for the specified period, then shut down as configured. After power was restored, the UPS automatically triggered a restart of the NAS, returning it to full operation within a few minutes. This confirmed the UPS’s ability not only to handle outages but also to manage recovery without manual restart, which is beneficial for users who may not be present during a power failure.

During all tests, the device’s limitations became apparent. With a 120 W maximum output and battery capacity limited to 43.2 Wh, it cannot sustain extended operation. Its role is restricted to ensuring controlled shutdowns and short bridging periods rather than providing long-term backup. Furthermore, it supports only one NAS system via DC pass-through, so it cannot protect additional hardware such as routers or switches. Nevertheless, within its defined parameters, the UPS consistently delivered seamless transitions and executed software-triggered events reliably, confirming that its functionality matches its intended scope.

UGREEN US3000 UPS Review – Conclusion & Verdict

The UGREEN US3000 fills a specific role: protecting UGREEN NAS devices from sudden power loss. Its design avoids the bulk and inefficiency of conventional AC-based UPS units by delivering DC pass-through power with zero transfer time. In practice, it provides just enough runtime for the NAS to perform a controlled shutdown, while its software integration ensures automation of both power-off and restart processes. With lithium-ion cells, a compact aluminum chassis, and close alignment with UGOS Pro features, it is engineered as a dedicated accessory rather than a universal power backup solution.

As a result, its usefulness is limited to scenarios where a single UGREEN NAS is the priority. It does not offer multiple outputs or extended backup duration, making it unsuitable for wider network coverage or enterprise requirements. Instead, the US3000 should be viewed as a narrowly focused safeguard that addresses one problem reliably: preventing data corruption and incomplete writes during outages. For users within the UGREEN ecosystem, it is an effective solution, but for broader applications, its scope remains intentionally constrained.

Check Amazon for the UGREEN US3000 UPS

Check AliExpress for the UGREEN US3000 UPS

PROs of the UGREEN US3000 UPS

CONs of the UGREEN US3000 UPS

Zero-second transfer time ensures uninterrupted NAS operation during outages. Compact and lightweight aluminum chassis with integrated heat dissipation. Direct DC pass-through eliminates inefficient AC/DC conversion. Full integration with UGOS Pro, including shutdown automation and restart control. Lithium-ion battery pack provides higher energy density than lead-acid designs. Purpose-built for UGREEN NAS systems with native USB communication support

Limited compatibility, works only with UGREEN NAS models that use external DC input. Short runtime and single-device capacity make it unsuitable for extended or multi-system protection.

 

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This description contains links to Amazon. These links will take you to some of the products mentioned in today's content. As an Amazon Associate, I earn from qualifying purchases. Visit the NASCompares Deal Finder to find the best place to buy this device in your region, based on Service, Support and Reputation - Just Search for your NAS Drive in the Box Below

Need Advice on Data Storage from an Expert?

Finally, for free advice about your setup, just leave a message in the comments below here at NASCompares.com and we will get back to you. Need Help? Where possible (and where appropriate) please provide as much information about your requirements, as then I can arrange the best answer and solution to your needs. Do not worry about your e-mail address being required, it will NOT be used in a mailing list and will NOT be used in any way other than to respond to your enquiry. [contact-form-7] TRY CHAT Terms and Conditions   Alternatively, why not ask me on the ASK NASCompares forum, by clicking the button below. This is a community hub that serves as a place that I can answer your question, chew the fat, share new release information and even get corrections posted. I will always get around to answering ALL queries, but as a one-man operation, I cannot promise speed! So by sharing your query in the ASK NASCompares section below, you can get a better range of solutions and suggestions, alongside my own.

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Is there a good reason for Synology to change the support of “Unverified Drives” in DSM?

Synology has long been regarded as one of the most user-friendly and reliable NAS brands in the market, balancing intuitive software with a wide hardware range that appeals to both home and business users. However, in recent years the company has taken an increasingly controversial path by enforcing strict compatibility requirements for hard drives and SSDs. Beginning with DSM 7 and escalating into the 2025 generation of devices, Synology now only certifies and supports its own branded storage media, effectively locking out many widely used alternatives from Seagate, Western Digital, and Toshiba. While Synology positions this move as a way to ensure system stability and consistency, the decision has sparked significant backlash among users who feel restricted in their options and burdened by higher costs. As competitors expand their ecosystems with more openness and flexibility, this proprietary approach risks damaging Synology’s reputation, raising questions about whether the company has prioritized profit margins over user choice.

What is the MAIN PROBLEM(s) with this decision by Synology?

The most immediate problem with Synology’s hard drive policy is the loss of flexibility that once made their systems so appealing. For years, customers could select from a wide range of industry-standard drives from Seagate, Western Digital, or Toshiba, tailoring storage to their budget, performance requirements, or regional availability. This freedom not only allowed users to balance cost and capacity, but also gave small businesses and home enthusiasts the ability to reuse existing drives, upgrade incrementally, or take advantage of promotions from different vendors. By restricting DSM compatibility to Synology-labelled drives, that flexibility is gone. For many users outside major markets, Synology’s drives are harder to source, priced higher than the competition, or limited in available capacities. What once felt like an open platform now increasingly resembles a closed ecosystem, where users must accept the vendor’s terms even if it means compromising on affordability or performance.

Another dimension of the problem lies in how Synology has communicated these changes, which many see as evasive or disingenuous. Officially, the company justifies the restriction as a move toward greater reliability and predictable system performance. The argument is that by narrowing the range of drives tested and supported, Synology can optimize DSM to work seamlessly with drives that have firmware tailored for its environment. In practice, though, the same underlying hardware often originates from Seagate or Toshiba, with only minor firmware adjustments and new branding. This creates a perception that Synology is overstating the technical benefits while quietly using the policy to secure higher margins. For long-time users, the contrast is stark: older models happily ran third-party drives with few issues, which makes the sudden insistence on “certification” seem less like an engineering requirement and more like a business maneuver. The result has been a significant erosion of trust between the company and its community.

The wider impact of this strategy has also been felt across the storage industry. Resellers have reported declining sales of Synology’s Plus series devices as customers explore alternatives such as QNAP, TrueNAS, or newer entrants like UGREEN and UniFi. For Synology, this shift is particularly damaging because its reputation has historically rested on attracting less technical buyers who value simplicity and reliability over DIY solutions. Now, even these entry-level and mid-range users are questioning whether they should commit to an ecosystem that limits their choice of drives and increases their costs. At the same time, hard drive manufacturers like Seagate and Western Digital are also affected, as Synology’s decision reduces the number of channels through which their products reach end customers. The ripple effect is therefore twofold: Synology risks alienating its base of loyal customers, while storage vendors lose a once-reliable partner, creating tension that could ultimately push more buyers toward competing NAS brands.

How Can Synology Solve This (if they want to)?

One path forward for Synology would be to adopt a hybrid compatibility model, where its own branded drives remain the recommended or default choice but third-party alternatives are still officially supported. This compromise has been proven by other vendors such as UniFi and QNAP, who sell their own labelled drives while maintaining compatibility lists for major manufacturers like Seagate, Western Digital, and Toshiba. By following this model, Synology could continue promoting the reliability benefits of its branded hardware without alienating customers who prefer flexibility. In practice, this would preserve a sense of choice for users while ensuring Synology can still highlight its “optimized” solutions as the safer, supported route.

 

 

Finally, Synology could address the availability and pricing concerns around its own branded drives. In many regions, these drives are either difficult to source or significantly more expensive than equivalent Seagate or Western Digital models. Improving distribution channels, ensuring consistent stock, and narrowing the price gap would make the transition more palatable to users who are willing to adopt Synology’s ecosystem but feel penalized by limited access. By focusing on accessibility and fairness rather than exclusivity, Synology could rebuild goodwill while still driving revenue from its hardware strategy. Taken together, these steps would not fully reverse the controversy but would demonstrate responsiveness and provide a clearer path to balancing stability, customer choice, and profitability.

Is there a way to FORCE a Synology NAS to accept unverified Hard Drives and SSDs in DSM?

For users unwilling to accept Synology’s restrictive stance on storage media, the community has developed reliable workarounds that re-enable full functionality for third-party hard drives and SSDs. The most widely adopted method involves injecting a script into the NAS system that bypasses DSM’s compatibility database, allowing otherwise unsupported drives to be used for installation, storage pools, caching, and expansion. Synology’s 2025 Plus-series models, such as the DS925+, block DSM installation if only unverified drives are present and issue constant warnings in Storage Manager. To overcome this, users first employ a Telnet-based flag during initial setup that tricks DSM into accepting the installation, followed by a more permanent fix applied through SSH. At the heart of this solution is Dave Russell’s (007revad) GitHub project Synology_HDD_db, which modifies DSM’s internal drive compatibility files. Once downloaded and executed via SSH, the script detects the NAS model, DSM version, and connected drives, then patches the system to treat them as officially supported.

The process is reversible, non-destructive, and works across multiple DSM versions, including DSM 7.2 and later. Additional features allow removal of persistent warning banners, full use of NVMe drives as storage volumes, and optional disabling of intrusive monitoring services like WDDA. To ensure ongoing stability, users can also configure a scheduled task in DSM’s Task Scheduler that re-applies the script at every boot, guaranteeing compatibility survives updates, reboots, or new drive insertions. While the script is robust and actively maintained, there are clear disclaimers: using it involves modifying system files, may void official Synology support, and should only be attempted by users confident with SSH and terminal commands who have reliable data backups. Nonetheless, for advanced users, system integrators, and enthusiasts, this community-driven solution has become the de facto method of restoring the freedom to use affordable and widely available third-party drives in modern Synology NAS systems.

Example of a 30TB Seagate HDD visible and functioning inside a Synology DS925+

Note – You can follow my guide on how to use this script modification (as well as outlining the pros and cons) HERE on the blog, or watch the video below:

The Future of Synology in the eyes of new and old buyers?

Synology’s decision to enforce exclusive support for its own branded hard drives and SSDs marks one of the most controversial shifts in the company’s history, transforming how both long-time customers and potential buyers view the brand. For over a decade, Synology’s appeal rested on a combination of intuitive software, solid hardware, and flexibility in allowing users to choose their own storage media from trusted vendors like Seagate, Toshiba, and Western Digital. By removing that choice in the 2025 generation, Synology has fundamentally altered the value proposition of its systems, making them appear less like open storage platforms and more like tightly controlled appliances. While the company justifies the policy by citing stability, predictability, and reduced support overhead, many users interpret it as a profit-driven attempt to push proprietary drives into the market, especially since these are often rebranded versions of third-party disks with modified firmware and higher price tags.

The backlash has been considerable, with resellers and community forums reporting falling interest in Synology’s Plus-series devices, particularly among home and small business users who previously embraced them for affordability and ease of expansion. Competing NAS providers such as QNAP, TrueNAS, UGREEN, and UniFi have been quick to capitalize on the discontent, positioning themselves as more open alternatives that maintain compatibility with industry-standard drives. At the same time, the growth of unofficial solutions like Dave Russell’s compatibility script demonstrates how determined users are to regain control over their hardware, even at the risk of voiding warranty or stepping outside official support. This dynamic reflects a widening gap between Synology’s official direction and the needs of its customer base, many of whom would prefer to accept a disclaimer about using unverified drives rather than being forced into a closed ecosystem.

Ultimately, Synology now stands at a crossroads that will define its reputation in the storage industry for years to come. If it continues to double down on a closed, proprietary model, the company may secure short-term revenue through drive sales but risks long-term damage to its image and market share. On the other hand, reintroducing a more flexible, transparent approach—such as allowing user consent for unsupported drives or improving global pricing and availability of its own disks—could restore trust and preserve its standing as the NAS brand of choice for both novices and professionals. The availability of community workarounds ensures that frustrated users are not entirely locked out of their systems, but the very existence of these tools highlights how far Synology has drifted from its once customer-first ethos. The next few years will be crucial, as the company either adjusts course and strikes a balance between profitability and user freedom, or risks ceding ground to rivals who are eager to embrace the openness Synology has chosen to leave behind.

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Need Advice on Data Storage from an Expert?

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Use Whatever Hard Drives or SSDs on Your Synology NAS (2025 Guide)

Note – there is a YouTube tutorial version of this guide HERE on the NASCompares YouTube Channel

Synology’s 2025 generation of NAS systems, such as the DS925+ and other Plus series models, introduced a more restrictive approach to drive compatibility. Unlike previous generations, these devices enforce a compatibility check that blocks or limits functionality when non-Synology hard drives or SSDs are used. As a result, users are unable to install DSM, create storage pools, or configure caching volumes using unverified drives. Even drives that work in earlier Synology models are now flagged as unsupported, resulting in persistent alerts or outright refusal to function. This guide provides a complete walkthrough for users who want to bypass those restrictions and enable full usage of third-party SATA and NVMe drives, including for pools, volumes, hot spares, and cache. It includes step-by-step instructions on how to install DSM with only unverified drives, how to remove system warnings, and how to automate the process for future updates or drive additions. The solutions here rely on trusted scripts developed by the Synology community and require minimal system modification, allowing users to regain control over their own hardware.

Special Thanks to Dave Russell

The ability to bypass Synology’s restrictive drive compatibility checks would not be possible without the extensive work of Dave Russell, widely known in the Synology community as 007revad. His GitHub project, Synology_HDD_db, is the basis for all the procedures outlined in this guide. The script he developed modifies DSM’s internal compatibility database, enabling full functionality for otherwise unsupported HDDs, SSDs, and NVMe drives. Dave has not only written and maintained this complex script, but also ensured that it works across different NAS models and DSM versions, including DSM 7.2 and newer. He continues to improve the tool in response to Synology firmware changes, regularly providing updates and extended options such as M.2 volume support and WDDA disablement. Users are strongly encouraged to consult the official GitHub repository, follow the provided documentation, and, where possible, support his ongoing work HERE, which remains freely available to the broader NAS community.

MASSIVE Disclaimer

Modifying your Synology NAS to allow the use of unverified drives is not officially supported by Synology. By applying the changes described in this guide, you will be altering system files and bypassing built-in compatibility checks within DSM. While these changes are reversible and have been widely tested, doing so may void your Synology warranty or affect your ability to receive technical support from the manufacturer, even in cases unrelated to storage. Additionally, although the script-based method described here is non-destructive and has proven safe for many users, there is always a minimal risk of issues following DSM updates or hardware changes. You should not proceed unless you have full backups of your data and are comfortable with SSH and terminal operations. This guide is intended for advanced users, system integrators, or home NAS enthusiasts who understand the risks and accept responsibility for operating outside of official Synology support channels.

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How to Set Up a Synology NAS with No Drives Installed to Allow DSM Installation

Synology’s 2025 and later Plus-series NAS systems will not allow DSM installation if only unverified drives are present. However, it is possible to bypass this limitation and install DSM without using any Synology-branded or officially supported drives. The method involves enabling Telnet access and overriding the drive compatibility check during the DSM installation process.

Step-by-Step Instructions:

• Physically set up your NAS

  • Connect the NAS to your local network using Ethernet.

  • Ensure the device is powered on, even if no drives are installed or only unverified drives are present.

• Attempt initial DSM setup

  • Use Synology Assistant or go to http://find.synology.com to locate your NAS.

  • Proceed through the DSM installation wizard. You will likely encounter an error indicating that the inserted drive(s) are unsupported.

• Enable Telnet access

  • In a browser, navigate to:
    http://<NAS-IP>:5000/webman/start_telnet.cgi
    Replace <NAS-IP> with the actual IP address of your NAS.

• Connect via Telnet

  • Open a Telnet client like PuTTY.

  • Enter your NAS IP address and connect via Telnet.

  • When prompted, use:

    • Username: root

    • Password: 101-0101 (default for this Telnet interface)

• Bypass installation check

  • Enter the following command into the Telnet window:

    while true; do touch /tmp/installable_check_pass; sleep 1; done


  • This creates a temporary flag that bypasses the system’s compatibility verification loop.

• Return to the DSM install page

  • Refresh the browser window where you began the DSM setup.

  • DSM will now allow installation to proceed, even on unverified drives.

• Finish DSM setup

  • Complete the DSM installation.

  • Create your admin user account when prompted.

  • You can now access the full DSM interface.

Once DSM is installed, you can proceed to apply the permanent drive compatibility fixes, create storage pools, and remove warning banners—all covered in the next section.

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How to Allow Unverified HDDs or SSDs to Be Used for Storage Pools, Volumes, and Caching (and Remove Warnings)

Once DSM is installed, unverified drives will still be blocked from creating storage pools, volumes, or caches. Even if the system boots, Storage Manager will display warnings or greyed-out options. To unlock full functionality, you must apply a community-developed script that updates DSM’s internal drive compatibility database. This section outlines how to download, apply, and validate that change.

Step-by-Step Instructions:

• Enable SSH on your NAS
  • In DSM, go to Control Panel > Terminal & SNMP > Terminal.
  • Enable SSH service and click Apply.

• Prepare SSH access
  • Use PuTTY (or your preferred SSH client) to connect to your NAS.
  • Log in using your DSM administrator username and password (not root at this stage).
• Create working directory
  • Once connected, elevate to root:

    sudo -i
    

  • Create the required folder:

    mkdir -m775 /opt
    cd /opt
    

• Download the required scripts
  • Run the following commands to download the latest versions directly from Dave Russell’s GitHub:

    curl -O "https://raw.githubusercontent.com/007revad/Synology_HDD_db/refs/heads/main/syno_hdd_db.sh"
    curl -O "https://raw.githubusercontent.com/007revad/Synology_HDD_db/refs/heads/main/syno_hdd_vendor_ids.txt"
    chmod 750 /opt/syno_hdd_db.sh
    

• Run the script
  • Execute the script to patch the drive database:

    /opt/syno_hdd_db.sh
    

  • The script will detect your NAS model, DSM version, and connected drives. It will then add those drives to the compatibility database and back up the original files.

• Check Storage Manager
  • Return to DSM’s Storage Manager.
  • If changes are not immediately visible, reboot your NAS.
  • You should now be able to create storage pools, volumes, and SSD caches with unverified drives, without warning messages.
• Optional: Disable compatibility warnings completely
  • To stop future drive alerts from DSM, you may also want to run:

    /usr/syno/bin/synosetkeyvalue /etc.defaults/synoinfo.conf support_disk_compatibility no
    

At this point, all third-party drives currently installed in the system will be fully usable and recognized as supported. The next section explains how to add additional unverified drives later and have them automatically accepted.

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What to Do When Adding New HDDs or SSDs Later for Expansion, Replacement, or Hot Spares

After your initial setup and database modification, any newly added unverified drives will still appear as unsupported in DSM until they are explicitly added to the modified compatibility database. This section outlines how to safely introduce new drives for RAID expansion, hot spare assignment, or disk replacement without encountering blockages or warning messages.

Step-by-Step Instructions:

• Physically install the new drive(s)
  • Power down your NAS if required (for systems that don’t support hot-swapping).
  • Insert the new unverified HDDs or SSDs into available bays.
  • Power the NAS back on and log in to DSM.
• Check Storage Manager
  • Go to Storage Manager > HDD/SSD.
  • Newly added drives will appear but will be marked as “Not supported” or “Unverified.”
  • They will not be usable for volume expansion or as hot spares until added to the compatibility list.
• Reconnect via SSH
  • Use PuTTY or your SSH client to log into DSM with your admin credentials.
  • Elevate to root access:

    sudo -i
    

• Navigate to the working directory
  • Assuming you previously created /opt and stored the script there:

    cd /opt
    

• Run the update script again
  • This re-applies the database patch and includes newly inserted drives:

    ./syno_hdd_db.sh

1. Verify drive status
   • Go back to Storage Manager.
   • Refresh the page or reboot the NAS if needed.
   • The newly added drives should now appear as compatible and can be used for expansion, drive replacement, or assigned as hot spares.

This process can be repeated anytime new unverified drives are introduced. However, to avoid having to manually re-run the script every time, the next section covers how to set up a scheduled task that automates this during every system boot.

---

 

How to Set Up a Scheduled Task to Re-Apply the Fix on Every Reboot

Synology DSM updates or certain system operations can overwrite or reset the internal compatibility database, especially after version upgrades or service restarts. To ensure that unverified drives remain recognized and fully functional even after a reboot, you can configure a scheduled task that automatically re-applies the compatibility script at every startup.

Step-by-Step Instructions:

• Log in to DSM and open Task Scheduler
  • Go to Control Panel > Task Scheduler.
  • Click Create > Triggered Task > User-defined script.
• Configure the general settings
  • Task Name: Name it something descriptive like Drive Compatibility Patch.
  • User: Select root from the dropdown (this is essential for full system access).
  • Event: Select Boot-up so the script runs every time the NAS starts.
  • Leave Enabled checked.

• Set the script action
  • Click on the Task Settings tab.
  • In the User-defined script box, enter the following command:

    mkdir -m775 /opt
    cd /opt || (echo "Failed to CD to /opt"; exit 1)
    curl -O "https://raw.githubusercontent.com/007revad/Synology_HDD_db/refs/heads/main/syno_hdd_db.sh"
    curl -O "https://raw.githubusercontent.com/007revad/Synology_HDD_db/refs/heads/main/syno_hdd_vendor_ids.txt"
    chmod 750 /opt/syno_hdd_db.sh
    /opt/syno_hdd_db.sh -e
    

  • This ensures the script is always downloaded fresh and applied with the -e flag for compatibility with scheduled tasks and email output (if enabled).
• Optional email notifications
  • Still under Task Settings, you can enable email alerts to be notified if the script fails or terminates abnormally.
• Save and test
  • Click OK to save the task.
  • You can manually run the task to confirm it executes correctly.
  • Reboot the NAS to ensure the script is applied at boot and unverified drives remain fully usable.

This scheduled task ensures long-term reliability and reduces the need for manual intervention whenever DSM is restarted, updated, or new drives are introduced.

---

Synology’s decision to restrict drive compatibility in its 2025 and later NAS models has complicated matters for users who prefer flexibility in their storage choices. However, through a combination of Telnet access, SSH scripting, and community-built tools like Dave Russell’s syno_hdd_db.sh, it is entirely possible to restore full drive functionality—even when using completely unverified SATA or NVMe devices. By following the steps outlined in this guide, users can install DSM on unverified drives, create storage pools, use SSDs for caching, and expand or modify their RAID configurations without limitations. Setting up an automated scheduled task further ensures these capabilities persist through reboots and DSM updates. While Synology may eventually broaden official support, this method provides a reliable and reversible way to maintain full control over your hardware today.

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Should You Buy the Synology DS925+ NAS?

In practical terms, the DS925+ is the stronger out-of-the-box choice, especially for users who value simplicity, improved default performance, and do not anticipate needing higher-than-2.5GbE networking down the line. However, the long-term value proposition becomes murkier when you factor in the DS923+’s PCIe expansion, broader drive compatibility, and the potential price drops that will follow its ageing status in Synology’s lineup. In short, the DS925+ is the better NAS on day one—more powerful, faster, and quieter. But if you’re planning for day 1,000, it’s worth pausing to consider whether the expandability and media flexibility of the DS923+ may be a better fit for your storage and networking needs over the next five to seven years.

Synology DS925+ NAS		Synology DS923+ NAS
Check Amazon in Your Region for the Synology DS925+ NAS	Check B&H for the Synology DS925+ NAS	Check Amazon in Your Region for the Synology DS923+ NAS	Check B&H for the Synology DS923+ NAS

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This description contains links to Amazon. These links will take you to some of the products mentioned in today's content. As an Amazon Associate, I earn from qualifying purchases. Visit the NASCompares Deal Finder to find the best place to buy this device in your region, based on Service, Support and Reputation - Just Search for your NAS Drive in the Box Below

Need Advice on Data Storage from an Expert?

Finally, for free advice about your setup, just leave a message in the comments below here at NASCompares.com and we will get back to you. Need Help? Where possible (and where appropriate) please provide as much information about your requirements, as then I can arrange the best answer and solution to your needs. Do not worry about your e-mail address being required, it will NOT be used in a mailing list and will NOT be used in any way other than to respond to your enquiry. [contact-form-7] TRY CHAT Terms and Conditions   Alternatively, why not ask me on the ASK NASCompares forum, by clicking the button below. This is a community hub that serves as a place that I can answer your question, chew the fat, share new release information and even get corrections posted. I will always get around to answering ALL queries, but as a one-man operation, I cannot promise speed! So by sharing your query in the ASK NASCompares section below, you can get a better range of solutions and suggestions, alongside my own.

WE LOVE COFFEE