Synology DS725+ Expandable 2-Bay NAS Revealed

The Synology DS725+ enters the scene as part of the company’s 2025 refresh to its Plus Series lineup, targeting power users, small businesses, and edge deployments that require compact, capable storage solutions without stepping into rackmount or enterprise territory. As a successor to the DS723+, it introduces several meaningful updates that improve the system’s usability right out of the box—most notably, a doubling of base memory to 4 GB ECC DDR4 (up from 2 GB) and the inclusion of a 2.5GbE LAN port for significantly faster network transfers, especially when working with high-resolution media or syncing large datasets across offices. These improvements make it immediately better suited for modern hybrid cloud workflows via Synology Drive, smoother multi-user access in Synology Photos and Office, and more responsive local performance in Surveillance Station environments. However, these upgrades come with trade-offs: the CPU remains unchanged, using the same AMD Ryzen R1600 found in the DS723+, and the PCIe slot has been removed, eliminating the popular option to upgrade to 10GbE networking or install additional specialized cards. As a result, while the DS725+ simplifies connectivity by offering faster speeds upfront, it also enforces a more rigid hardware configuration. It’s a device clearly designed with platform consistency and managed environments in mind—particularly when paired with Synology’s increasingly closed ecosystem of verified drives and accessories. For those already aligned with Synology’s ecosystem, the DS725+ offers a stable and streamlined solution for private cloud deployment that is more about ability than base storage – but with the option to add more later, collaborative data workflows, and secure backup environments. But does it deserve your data? Let’s discuss.

Synology DS725+ NAS – Hardware Specifications

The DS725+ is powered by the same dual-core AMD Ryzen R1600 processor found in its predecessor, the DS723+. This chip runs at a base clock of 2.6 GHz with a boost up to 3.1 GHz and supports hardware encryption acceleration, making it capable of handling simultaneous services like encrypted file access, Synology Drive syncing, and light virtual machine workloads. While it’s a competent processor for this class of NAS, its reuse in the DS725+ may be seen as a missed opportunity for users who were hoping for a newer or more power-efficient generation—particularly with rising expectations around AI-powered indexing and multimedia transcoding. That said, DSM 7.2’s core apps like Hyper Backup, Snapshot Replication, and Active Backup Suite remain well within the CPU’s performance envelope, ensuring reliable day-to-day operations for home offices and remote workers.

Where the DS725+ makes a clear improvement is in memory. Unlike the DS723+, which shipped with 2 GB of ECC RAM, the DS725+ doubles the default capacity to 4 GB ECC DDR4, offering more breathing room for multitasking, container workloads, and collaborative apps like Synology Office and Chat. This is particularly helpful for deployments using packages such as Synology MailPlus or managing multiple Surveillance Station camera streams. The RAM is installed in one of two available SODIMM slots, and the unit officially supports up to 32 GB (16 GB x2), making it suitable for heavier use cases like running multiple virtual DSM instances or handling extensive indexing operations in Synology Photos. ECC memory, while not strictly essential for all users, adds a layer of data integrity that reinforces the DS725+’s suitability for professional and production environments.

In terms of connectivity, the DS725+ makes a decisive shift by replacing the DS723+’s dual 1GbE ports with a more modern setup: one 2.5GbE and one 1GbE port. This move improves real-world transfer speeds out of the box without requiring a PCIe network upgrade, as was previously necessary. However, it also reflects a deliberate limitation: the PCIe Gen3 x2 slot from the DS723+ is no longer present, meaning users cannot add a 10GbE NIC or other expansion cards. Storage-wise, the DS725+ retains the same 2-bay SATA layout, supports hot-swappable 3.5″/2.5″ drives, and introduces M.2 NVMe SSD slots that allow Synology-branded SSDs to be used not just for caching but also for primary storage pools. Users can expand total storage to 7 drives via the DX525 USB-C expansion unit, and cooling is handled by a single 92mm fan in the rear. Power draw remains low, with a 90W adapter and idle consumption under 9W, keeping it efficient for always-on deployment.

Synology DS725+ vs DS723+ NAS – Much of an Upgrade?

At a glance, the DS725+ and DS723+ appear to be cut from the same mold. They share the same AMD Ryzen R1600 dual-core processor, identical physical dimensions, drive bay count, and expansion potential via an optional five-bay unit. However, the DS725+ makes several deliberate design changes aimed at improving out-of-the-box usability, while also signaling a shift toward Synology’s 2025 platform philosophy. Chief among these changes is the inclusion of a 2.5GbE LAN port, replacing one of the two 1GbE ports found on the DS723+. This upgrade allows users to immediately take advantage of higher bandwidth for file transfers, especially useful for larger datasets handled through Synology Drive or multimedia libraries accessed via SMB. At the same time, the DS725+ sheds the DS723+’s PCIe Gen3 x2 expansion slot, which means users no longer have the option to add a 10GbE NIC or other cards. For users needing maximum future-proofing or high-throughput workloads, this loss may feel restrictive.

Another key improvement is in system memory. The DS725+ comes with 4 GB of ECC DDR4 RAM pre-installed, doubling the 2 GB included with the DS723+. This seemingly modest upgrade has real-world implications. Services like Synology Photos, which require more memory for AI-driven facial and object recognition, or Synology Office, which handles collaborative document editing, benefit directly from the added RAM—making the system more responsive and able to support more concurrent users from the outset. For users running multiple applications, hosting virtual DSMs, or leveraging Hyper Backup with compression and deduplication, the DS725+ delivers a more capable base configuration without requiring immediate memory expansion. Both systems support upgrades up to 32 GB, but the DS725+ gives a head start where it matters.

However, the most controversial difference between these two models lies in drive compatibility. The DS723+ was among the last in Synology’s lineup to offer relatively open support for third-party drives—with warning banners but no functional blocks in DSM. The DS725+, by contrast, fully embraces Synology’s walled-garden storage policy. Users must use Synology-verified drives (such as HAT3300/5300 HDDs and SNV3400 SSDs) for core operations like DSM installation, volume creation, and RAID rebuilds. While migrated pools using unverified drives may still mount with warnings, new deployments and expansions are effectively locked down. This shift reflects Synology’s strategy to control hardware variables for improved stability and long-term support—but it’s also a clear trade-off in flexibility and total cost, especially for existing users with stockpiled third-party drives from trusted vendors like Seagate or WD.

Synology DS725+ NAS DSM Software & Services

Like all current-generation DiskStation models, the DS725+ runs on Synology DiskStation Manager (DSM) 7.2, a mature, Linux-based operating system that delivers one of the most refined NAS user experiences available today. DSM combines consumer-friendly accessibility with enterprise-ready tools, making the DS725+ suitable for a wide range of use cases—from personal media libraries to business-critical collaboration environments.

Core services such as Synology Drive transform the DS725+ into a fully private cloud, enabling real-time file syncing across devices and platforms, granular access permissions, file versioning, and web-based document previews. The system can support up to 50 Drive users and half a million hosted files, making it a capable solution for small teams managing shared datasets or projects. Meanwhile, Synology Photos leverages the upgraded system memory to provide intelligent media organization, with facial and object recognition that improves as additional photos are indexed—an increasingly valuable feature in creative or archival workflows.

For data protection and business continuity, the DS725+ supports Synology’s comprehensive backup ecosystem. Active Backup Suite consolidates backup tasks for Windows and Linux endpoints, VMware and Hyper-V virtual machines, and Microsoft 365 or Google Workspace SaaS accounts. Administrators can automate tasks, monitor statuses from a unified console, and execute bare-metal recovery when needed.

Complementing this is Hyper Backup, which allows multi-destination backups—ranging from local USB storage to other NAS units, rsync targets, or Synology C2 Storage. The inclusion of Snapshot Replication provides near-instantaneous versioned recovery with 128 snapshots per shared folder and 256 per system, ensuring protection against data corruption, ransomware, or accidental deletion. These tools can be used together to create a robust, layered protection strategy even in a small-scale deployment.

Beyond file management and backup, DSM turns the DS725+ into a complete digital operations hub. With Synology Office, users can co-author documents, spreadsheets, and presentations in real time within a browser—ideal for small teams replacing Google Workspace or Microsoft 365 with a private alternative. Communication tools like Synology Chat and MailPlus offer encrypted messaging and a scalable private email server with support for up to 60 users (5 free accounts included).

For security-conscious setups or compliance-driven environments, these services operate entirely within your NAS, without relying on third-party cloud platforms. Meanwhile, Surveillance Station allows the DS725+ to manage up to 40 IP cameras at 1080p (H.265) with license-free recording for two channels, making it a competent choice for office or home surveillance when paired with Synology’s mobile and desktop apps. DSM’s inclusion of Adaptive Multi-Factor Authentication (AMFA), Active Insight fleet monitoring, and SSL/TLS support ensures that even this compact 2-bay NAS delivers serious administrative and security capabilities.

Synology DS725+ NAS Release and Price

The Synology DS725+ is set for a phased global release, with initial availability rolling out across Eastern markets—including Japan, Taiwan, China, and Australia—in late May 2025, followed by a wider international launch in June 2025. While Synology has yet to publish official retail pricing, the DS725+ is expected to arrive in line with its predecessor, the DS723+, placing it in the $449 to $499 USD range. This positions the DS725+ in the upper tier of the compact 2-bay NAS segment, offering a blend of business-capable performance and centralized storage management for prosumers, remote workers, and small teams.

Although its specifications remain similar to the DS723+ in some areas—particularly with regard to the CPU—the DS725+ includes default features like 2.5GbE networking and higher base memory, which previously required add-ons or manual upgrades. These improvements may appeal to users who want a more capable system straight out of the box without needing to invest in additional hardware. However, buyers should also be aware of the tightened hardware compatibility policy introduced across Synology’s 2025 product line. As with other new-generation models, the DS725+ requires Synology-verified drives for key operations such as DSM installation, volume creation, and SSD caching, which could impact overall system cost and drive choice flexibility.

Given these factors, the DS725+ is best suited for users seeking a stable, tightly integrated NAS experience with long-term software support and advanced functionality provided through DSM. While those with existing third-party drives may need to consider compatibility constraints, the DS725+ still represents a focused and modernized solution in the 2-bay NAS category—particularly for those fully aligned with Synology’s expanding ecosystem.

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Synology DS1825+ NAS Revealed – New 8 Bay NAS on the Block

Synology has quietly launched the new DS1825+ NAS, an 8-bay desktop solution aimed at prosumers, creative professionals, and small businesses in need of high-capacity, high-reliability network storage. Replacing the 2020-era DS1821+, this new model has debuted across eastern markets including Taiwan, Japan, China, and Australia, with broader availability expected within the coming month. While the DS1825+ shares the same AMD Ryzen V1500B processor as its predecessor, it introduces meaningful upgrades in system memory, network connectivity, and expansion port design. This release also reflects Synology’s increasingly closed hardware ecosystem approach, particularly in terms of drive compatibility. With pricing expected to be similar to the DS1821+—around $999 to $1099 USD—the DS1825+ positions itself as an incremental yet strategically significant refresh in Synology’s “Plus” lineup.

Synology DS1825+ NAS – Hardware Specifications

The DS1825+ is powered by the AMD Ryzen V1500B, a quad-core, 64-bit processor running at 2.2 GHz. This is the same CPU used in the DS1821+, and while it lacks a performance boost on paper, it continues to deliver reliable, multi-threaded performance suited for virtualization, large file transfers, and simultaneous user workloads. The system comes with 8 GB of DDR4 ECC SODIMM memory pre-installed, up from 4 GB in the DS1821+, and supports up to 32 GB across two slots. ECC memory adds an additional layer of data protection by automatically correcting memory errors—a key consideration for business-critical environments.

Synology DS1825+ NAS – DSM Software Specifications

The DS1825+ runs Synology’s DiskStation Manager (DSM), a Linux-based operating system that brings a wide array of software features designed for both home and business environments. Core functionalities include Synology Drive, which supports up to 100 users for cloud-style file syncing and sharing, and Synology Office, which enables real-time collaborative editing across documents, spreadsheets, and slides with similar user caps. For data protection, Snapshot Replication allows up to 256 snapshots per shared folder and 4,096 total system snapshots, while Hyper Backup and Active Backup for Business provide comprehensive options for client and server backups. Surveillance Station is also included with two default IP camera licenses and supports up to 40 1080p or 4K streams, depending on codec and frame rate, making it suitable for medium-scale surveillance setups.

One area where the DS1825+ makes a notable shift is in its storage pool policies. While the M.2 NVMe SSD slots can be used to create dedicated storage pools in addition to cache, this functionality is locked behind strict hardware validation. Only Synology-certified drives—specifically the SNV3400 series—are permitted for this role. This tighter integration may offer improved thermal management and reliability assurances but represents a step away from the broader compatibility seen in previous Plus-series devices.

Synology DS1825+ NAS vs the DS1821+ NAS

At first glance, the DS1825+ and DS1821+ appear nearly identical in core architecture, both using the AMD Ryzen V1500B processor and offering 8 drive bays with optional expansion to 18. However, the DS1825+ introduces several hardware-level improvements that cater to modern network environments. These include a bump in default RAM from 4 GB to 8 GB, upgraded LAN ports from four 1GbE to two 2.5GbE, and a shift from eSATA to USB-C-based expansion for DX525 units. These changes may not result in dramatically different performance under all conditions but do reflect a push toward better bandwidth utilization and a more consolidated hardware platform. Additionally, while the PCIe slot remains the same (Gen3 x8, x4 link), users looking to upgrade to 10GbE or 25GbE networking will benefit from increased LAN speed potential out of the box.

That said, the DS1825+ introduces certain trade-offs compared to its predecessor. While the DS1821+ maintained broader compatibility with third-party hard drives and SSDs, including full DSM functionality even with unverified drives, the DS1825+ enforces a stricter hardware compatibility policy. As a result, users are now limited to Synology-verified drives for core functions like volume creation and SSD caching. This shift may benefit system reliability and warranty alignment but could deter users with existing non-Synology storage media or those seeking cost-effective alternatives. Moreover, while the DS1825+ enables a higher potential single-volume size (200 TB with expanded memory), it actually reduces the number of internal volumes from 64 to 32, which may be a consideration for more advanced or segmented storage environments.

Synology DS1825+ NAS – Hard Drive Compatibility

With the release of the DS1825+, Synology has fully adopted its stricter hardware validation policy, significantly limiting support for third-party hard drives and SSDs. Unlike earlier models such as the DS1821+, which allowed DSM installation and storage pool creation with non-verified drives (albeit with warning messages), the DS1825+ enforces compatibility checks at the system level. Currently, only Synology-branded drives — such as the HAT3300 and HAT5300 series HDDs, and the SAT5200 and SNV3400 SSDs — are included on the official compatibility list. Attempts to install DSM with unverified HDDs, including popular models like the Seagate IronWolf and WD Red Plus, result in a complete block at initialization. There is no option to bypass or ignore these restrictions, and DSM will not proceed past setup when such drives are detected.

This strict policy has also been observed during storage expansion and migration. Migrated volumes from older Synology systems using unverified drives will still mount successfully on the DS1825+, allowing users to retain access to their data. However, the DSM interface will persistently display warnings, error icons, and status alerts across the Storage Manager and system health panels.

These alerts cannot be dismissed or suppressed, and while they do not affect system operation, they may be problematic for less technical users or managed IT environments. Furthermore, expanding an existing storage pool with unverified drives is no longer allowed — even if the new drives are identical to those already in use. Tests confirm that DSM will refuse to integrate non-listed drives into a pool, issue compatibility errors for hot spare assignments, and block recovery attempts for degraded arrays using unverified media.

One exception, as currently observed in testing, involves SATA SSDs. While unverified 3.5” HDDs are completely blocked from use during initialization, certain non-Synology SATA SSDs can still be used to install DSM or create volumes. These drives are flagged with warnings post-installation, but DSM allows the setup to proceed. That said, these SSDs also carry ongoing status alerts, and users cannot combine them with verified HDDs in mixed arrays or use them to expand verified pools. M.2 NVMe support is even more restrictive — only Synology SNV-series SSDs are accepted for either caching or pool creation, and all third-party models are entirely blocked. For now, users relying on legacy or third-party drives face a clear trade-off: adopt Synology’s ecosystem fully or accept a range of functional and visual limitations that reduce overall flexibility.

Synology DS1825+ NAS – Price and Release

The Synology DS1825+ is currently available only in select eastern regions, including Taiwan, Japan, China, and Australia, with broader global availability expected to follow within the next few weeks. Based on current distribution information, retail listings, and typical rollout timelines, availability in North America, the UK, and Europe is anticipated by the end of May or early June 2025. While Synology has yet to confirm official regional pricing, early indications suggest the DS1825+ will launch at approximately $999 to $1,099 USD—on par with the original MSRP of the DS1821+. This pricing strategy maintains Synology’s established positioning for its 8-bay “Plus” series NAS models, appealing to both advanced home users and small business environments looking for scalable, reliable storage solutions.

As with recent releases in the 2025 Synology lineup, prospective buyers should pay close attention to official announcements and trusted retailers, particularly in light of increasing emphasis on bundled hardware and reduced third-party flexibility. The DS1825+ introduces modest but meaningful hardware changes—such as default 8GB ECC memory, dual 2.5GbE LAN, and USB-C expansion support—while retaining the same core CPU. Although it lacks a generational leap in processing power, the unit aims to refine the overall platform rather than reinvent it. However, potential buyers should be fully aware of the enforced drive compatibility limitations, which mark a shift from previous models and may impact long-term upgrade plans. For those seeking a dependable NAS with improved baseline specs and tighter integration into the Synology ecosystem, the DS1825+ presents a balanced, if slightly more controlled, successor.

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The Synology DS1525+ NAS is Confirmed and Just Overshadowed the DS925+

The Synology DS1525+ NAS represents a significant evolution in the brand’s 5-bay desktop series, bringing forward a more scalable, performance-focused solution aimed at both advanced home users and professional environments. Positioned as a more powerful and versatile alternative to the recently launched DS925+, the DS1525+ is clearly engineered with broader deployment scenarios in mind—from creative professionals handling high-volume media workflows to small businesses seeking reliable virtualization, backup, and collaboration tools. It boasts a modernized hardware foundation, including a Ryzen quad-core processor, 8GB of ECC memory (upgradeable to 32GB), dual M.2 NVMe SSD slots, and native support for 2.5GbE networking—features that now align with the increasing demands for multi-user, high-throughput environments.

Yet the DS1525+ isn’t just about faster networking or raw internal horsepower—it also brings back long-requested upgrade options like 10GbE scalability via a PCIe slot and dual DX525 expansion support for up to 15 drives total. This places the DS1525+ in a much more flexible tier compared to previous 5-bay Synology NAS systems and even challenges some of the lower-end rackmount models in terms of features and performance. With the continuing integration of Synology’s DSM 7.2 platform and a shift in how the brand is enforcing drive compatibility policies in the 2025 generation, the DS1525+ also enters the market during a controversial transition period for the company—something that may significantly influence buying decisions. Whether you’re upgrading from an older DS920+/DS1520+ or looking to deploy a scalable data solution for your home or office, the DS1525+ arrives at a pivotal moment for Synology.

Synology DS1525+ NAS – Hardware Specifications

The Synology DS1525+ brings a refined balance of processing power, memory, connectivity, and scalability that reflects its positioning in the upper end of Synology’s Plus Series. At its core is the AMD Ryzen V1500B processor, a 64-bit quad-core chip running at 2.2GHz with support for hardware encryption and virtualization. While this processor first debuted in Synology’s higher-end SMB models in 2020, its migration to the 5-bay desktop tier represents a welcome boost in capability for power users. It offers significantly more multitasking headroom compared to the dual-core Ryzen R1600 seen in the DS923+, and its support for native virtualization, container workloads, and file services under sustained loads makes it a particularly strong choice for office deployments and edge data processing.

The DS1525+ also introduces versatile storage configuration options. It supports five 3.5″/2.5″ SATA HDDs or SSDs, with the option to add two DX525 expansion units for a maximum of 15 bays total—translating to 300TB of raw capacity with 20TB drives. Additionally, the system includes two M.2 NVMe slots, allowing users to add SSD cache acceleration or create separate storage pools without sacrificing any of the main drive bays. As with other 2025-generation Synology models, the M.2 slots currently only support Synology’s own SNV-series drives for both caching and pool creation, further tying storage choices to the Synology ecosystem.

Network and expansion features on the DS1525+ are another standout area. The NAS includes two native 2.5GbE LAN ports that support Link Aggregation, failover, and SMB multichannel. This addresses a long-standing complaint of previous generations, which were limited to 1GbE by default. Better still, the DS1525+ includes a PCIe Gen3 x2 slot for installing Synology’s E10G22-T1-Mini 10GbE network card—something that was removed from the DS925+ entirely. This combination of faster default networking and optional 10GbE makes the DS1525+ suitable for demanding data workflows, such as multi-camera surveillance, real-time 4K media editing, and large-volume backup tasks.

Synology DS1525+ NAS vs the DS925+ (2025) or DS1522+ (2022)

The release of the Synology DS1525+ will naturally invite comparisons with two other key models in Synology’s portfolio: the recently launched DS925+ and the 2022-era DS1522+. On paper, the DS1525+ shares a large portion of its DNA with both of these models — borrowing the same AMD Ryzen V1500B processor from the DS925+, and directly succeeding the DS1522+ as Synology’s latest 5-bay NAS in the Plus series. But while these three models target similar audiences — advanced home users, creative professionals, and small businesses — there are clear differences in hardware, scalability, network architecture, and long-term usability that separate them meaningfully. The DS1525+ builds directly on the foundation laid by the DS925+, which itself introduced a wave of hardware upgrades to the Synology Plus series in early 2025. Both devices feature the same AMD Ryzen V1500B 4-core, 8-thread processor and support ECC memory up to 32GB. However, where the DS925+ stops at 4 bays with no support for expansion units, the DS1525+ supports up to 15 total bays with the inclusion of two DX525 expansion chassis — a major difference for users planning long-term storage growth. The DS1525+ also doubles the memory out of the box (8GB vs 4GB in the DS925+), includes the same 2x 2.5GbE ports for faster-than-gigabit networking, and features dual M.2 NVMe slots for cache or storage pools. In essence, the DS1525+ is the more scalable, robust choice — particularly if you foresee needing significantly more storage or concurrent users down the line.

Hardware Specifications

CPU
Model	DS1522+	DS1525+	DS925+
CPU Model	AMD Ryzen R1600	AMD Ryzen V1500B	AMD Ryzen V1500B
CPU Quantity	1	1	1
CPU Core	2	4	4
CPU Architecture	64-bit	64-bit	64-bit
CPU Frequency	2.6 (base) / 3.1 (turbo) GHz	2.2 GHz	2.2 GHz
Hardware Encryption Engine	/	/	/
Memory
System Memory	8 GB DDR4 ECC SODIMM	8 GB DDR4 ECC SODIMM	4 GB DDR4 ECC SODIMM
Memory Module Pre-installed	8 GB (8 GB x 1)	8 GB (8 GB x 1)	4 GB (4 GB x 1)
Total Memory Slots	2	2	2
Maximum Memory Capacity	32 GB (16 GB x 2)	32 GB (16 GB x 2)	32 GB (16 GB x 2)
Storage
Drive Bays	5	5	4
Maximum Drive Bays with Expansion Unit	15 (DX517 x 2)	15 (DX525 x 2)	9 (DX525 x 1)
M.2 Drive Slots	2 (NVMe)	2 (NVMe)	2 (NVMe)
Drive Type (See all supported drives)	3.5″ SATA HDD 2.5″ SATA SSD M.2 2280 NVMe SSD	3.5″ SATA HDD 2.5″ SATA SSD M.2 2280 NVMe SSD	3.5″ SATA HDD 2.5″ SATA SSD M.2 2280 NVMe SSD
Hot Swappable Drive*
Notes	The hot swappable drive feature is not supported by M.2 SSD slots.	The hot swappable drive feature is not supported by M.2 SSD slots. Compatible drives are mandatory. Please consult our compatibility list before purchasing hard drives. For more details, please refer to this article.	The hot swappable drive feature is not supported by M.2 SSD slots. Compatible drives are mandatory. Please consult our compatibility list before purchasing hard drives. For more details, please refer to this article.
External Ports
RJ-45 1GbE LAN Port	4	X	X
RJ-45 2.5GbE LAN Port	X	2	2
USB 3.2 Gen 1 Port	2	2	2
Expansion Port	2	2	1
Expansion Port Type	eSATA	USB Type-C	USB Type-C
Notes	MTU value of 1GbE LAN port has a limit of 1500.
PCIe
PCIe Expansion	1 x Gen3 x2 network upgrade slot	1 x Gen3 x2 network upgrade slot
Appearance
Size (Height x Width x Depth)	166 mm x 230 mm x 223 mm	166 mm x 230 mm x 223 mm	166 mm x 199 mm x 223 mm
Weight	2.7 kg	2.67 kg	2.26 kg
Others
System Fan	92 mm x 92 mm x 2 pcs	92 mm x 92 mm x 2 pcs	92 mm x 92 mm x 2 pcs
Fan Speed Mode	Full-Speed Mode Cool Mode Quiet Mode	Full-Speed Mode Cool Mode Quiet Mode	Full-Speed Mode Cool Mode Quiet Mode
Brightness Adjustable Front LED Indicators	/	/	/
Power Recovery	/	/	/
Noise Level*	22.90 dB(A)	22.60 dB(A)	20.5 dB(A)
Scheduled Power On / Off	/	/	/
Wake on LAN / WAN	/	/	/
Power Supply Unit / Adapter	120 watts	120 watts	100 watts
AC Input Power Voltage	100V to 240V AC	100V to 240V AC	100V to 240V AC
Power Frequency	50/60 Hz, Single Phase	50/60 Hz, Single Phase	50/60 Hz, Single Phase
Power Consumption*	52.06 watts (Access) 16.71 watts (HDD Hibernation)	44.56 watts (Access) 13.63 watts (HDD Hibernation)	37.91 watts (Access) 12.33 watts (HDD Hibernation)
British Thermal Unit	177.64 BTU/hr (Access) 57.02 BTU/hr (HDD Hibernation)	151.95 BTU/hr (Access) 46.48 BTU/hr (HDD Hibernation)	129.27 BTU/hr (Access) 42.05 BTU/hr (HDD Hibernation)

The DS1522+, launched in mid-2022, was one of Synology’s most widely praised 5-bay NAS systems, with an excellent price-to-performance ratio. It featured the AMD Ryzen R1600 processor (dual-core, 4-thread) and came with 8GB of ECC memory, a PCIe Gen 3 slot for 10GbE upgrades, and four Gigabit Ethernet ports for flexible network configurations. The DS1525+ modernizes and refines that package. While it drops the PCIe slot, it replaces it with native 2.5GbE networking — removing the need for upgrades just to get faster-than-Gigabit speeds. It also improves processor efficiency with the more capable V1500B CPU (same as in the enterprise-grade DS1823xs+) and retains support for up to 32GB of ECC RAM. Additionally, the M.2 NVMe slots in the DS1525+ support both caching and storage pools — unlike earlier models where storage pool creation was either unsupported or limited to Synology-only drives.

Which of these NAS systems is right for you comes down to a blend of performance needs, scalability goals, and budget. The DS1525+ offers a more future-proof solution with high raw performance, 5-bay storage out of the box, superior expansion support (up to 15 drives), and a modern networking stack with 2.5GbE ports included as standard. It’s ideal for content creators with large media libraries, teams running shared services or VMs, or businesses needing long-term flexibility. The DS925+, on the other hand, is the budget-conscious user’s pick — priced lower and providing nearly identical internal hardware, but in a more compact 4-bay enclosure with no option to scale beyond that. If you’re confident you won’t need more than 4 drives and don’t require 10GbE or PCIe expansion, the DS925+ still provides DSM 7.2 and Synology’s excellent software ecosystem without compromise. Finally, for users still holding onto the DS1522+ or considering it due to its often discounted price post-DS1525+ launch, it’s worth weighing the trade-offs. While the DS1522+ provides a PCIe slot for 10GbE expansion, it lags behind in CPU power, lacks 2.5GbE out of the box, and doesn’t support NVMe storage pools. The DS1525+ is clearly the better long-term investment — if the price difference fits your budget. For users looking for the right balance of power, performance, and scalability — without needing to jump to the pricier XS series — it may well be the best 5-bay Synology NAS to date.

Synology DS1525+ NAS – HDD and SSD Compatibility

One of the biggest points of contention with the new Synology DS1525+ — following the controversy sparked by the DS925+ — is Synology’s stricter enforcement of drive compatibility. Historically, Synology supported a broad range of third-party hard drives and SSDs, merely issuing warning messages when unsupported drives were used. That changed with the DS925+, and the DS1525+ appears to double down on this new policy. At launch, the DS1525+ only lists Synology-branded HDDs and SSDs — such as the HAT3300, HAT5300, SAT5200, and SNV3400 — as officially compatible. If users attempt to initialize DSM using a drive not listed, the system will block installation entirely. This is a significant departure from earlier models like the DS1522+ or DS920+, which allowed DSM installation with third-party drives, even if accompanied by warning banners.

This tighter control extends to both SATA HDDs and M.2 NVMe SSDs. In the DS1525+, users can no longer use third-party NVMe SSDs for even basic caching — a feature previously accessible with non-Synology drives. Storage pools and caching are now restricted to Synology’s own SNV-series drives. This limitation can be a deal-breaker for users with existing SSDs or those seeking more affordable alternatives.

Drive migration from older NAS systems still works, with volumes booting as expected — but warning messages about unverified drives will be persistent. Moreover, trying to expand existing storage pools with unlisted drives will now fail outright, blocking the option in Storage Manager unless using Synology-verified models. While Synology cites system reliability and long-term support as reasons for these restrictions, the user base has expressed growing frustration. This new approach marks a clear shift toward a walled ecosystem, and while it may enhance stability, it reduces flexibility — especially for enthusiasts and IT professionals used to Synology’s former openness.

Synology DS1522+ NAS Release Date and Price?

The Synology DS1525+ NAS is expected to see a staggered global release, continuing the rollout pattern observed with the DS925+ and other 2025 series models. Initial availability is anticipated in Synology’s eastern markets — including Taiwan, China, Japan, Australia, and New Zealand — with Western availability (North America, UK, and Europe) likely landing in late May or early June 2025. This regional launch strategy has become common for Synology, allowing them to manage early feedback and firmware polishing before global distribution.

As for pricing, early indicators suggest that the DS1525+ will launch between $699 and $799 USD, depending on local taxes and bundled accessories (such as pre-installed memory or included drives). This places it squarely between the DS925+ ($599–$649) and the older DS1522+, which has often dipped below $550 in recent sales due to its older hardware and limited upgradability. Despite being the most expensive of the trio, the DS1525+ justifies its price tag with enhanced default memory, greater expansion potential, and retained PCIe support for optional 10GbE — features notably absent on the DS925+.

While Synology has yet to officially confirm regional pricing or exact release dates, retail listings and early distribution documents hint that pre-orders and launch events may begin rolling out in key Asian markets before the end of May. As always, early adopters should watch Synology’s official channels and trusted retailers for updates, especially considering recent trends toward drive bundling and tighter ecosystem control. For those who waited for a more robust refresh of the DS1522+, the DS1525+ is shaping up to be the spiritual and practical successor many had hoped for.

Check Amazon in Your Region for the Synology DS1525+ NAS

Check B&H for the Synology DS1525+ NAS

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The Synology DS925+ NAS is (STILL) Coming..and Soon

UPDATE 3rd May 2025: The Synology DS925+ NAS is Now Released, and I have made a YouTube Video Review here, and a written DS925+ NAS here

ORIGINAL ARTICLE BELOW:

It is fast becoming the worst-kept secret in the world of network-attached storage, but Synology’s continued plans to launch refreshes of a number of their popular desktop devices received another public outing this weekend, when keen users on Reddit spotted the official pages for the Synology DS925+ and DX525 on Amazon.co.uk, listing hardware specifications, pricing, release dates, and general background info. Although the appearance of the DS925+ isn’t exactly surprising—given the large info drop semi-officially revealed at an official event by a user on Chiphell—it is nonetheless surprising to see these two official Synology products seemingly added by Synology themselves for Amazon distribution, yet with absolutely zero mention on the traditional Synology platforms (Synology Products, Synology Downloads, Synology Download Registry, etc). Nonetheless, this appearance has confirmed numerous details about the DS925+ hardware specifications, for good and for bad, so I wanted to go through the further confirmed specifications and what they mean.

Synology DS925+ NAS Confirmed Hardware Specifications

As previously alluded to last month in the previous leak, the Synology DS925+ will arrive with the already integrated CPU from AMD that featured on previous SMB releases—the V1500B. This is a quad-core CPU that allows for more cores, more threads (i.e. more vCPUs) than the R1600 in the DS923+, as well as a lower TDP—though also a lower total clock speed available at first. It arrives with 4GB of ECC memory that can be scaled up to 32GB via two SODIMM DDR4 slots. DS925+ includes 2 × 2.5GbE, a very welcome if somewhat overdue upgrade on this product series from Synology. The SSD compatibility for storage pools and the speed allocated to each slot is still TBC. The expansion capabilities of the DS925+ have changed from the long-running eSATA support and DX517 of older Synology devices and now lean towards popular USB-C, and this is what triggered the new DX525 expansion box. We are still awaiting confirmation of the confirmed speed of this USB-C port, as well as its broader compatibility for other things (given the larger variety of USB-C options available in the market compared with eSATA), but slides shown at the Synology partner event last month seemingly indicated that this will NOT be USB 3.2 Gen 2 10Gbps.

Probably the biggest and most controversial change here in the newer generation box is the removal of the mini PCIe upgrade slot that featured on the DS923+. The new DS925+ completely lacks this ability to scale up to 10GbE later down the line, which is probably going to upset a lot of users. PCIe modules they have sold (which would greatly explain, perhaps, the motivation for removing this feature), it is still something of a blow that this new generation device has removed a particularly appealing network upgrade path option. The motivation for this could be theoretically for multiple reasons, such as:

• Synology might well have deemed the two-times 2.5GbE network connectivity on the DS925+ sufficient for the four drives of SATA storage that it features, as well as ensuring that the system does not overlap other devices higher in the product portfolio food chain too much.
• The PCIe line distribution of this CPU and the chipset used on this board might result in limitations to the distribution of those lanes and therefore made the upgrade difficult to implement.
• The USB-C port for expansions may support a 10GbE upgrade module down the line that Synology intend on rolling out—a bit of a long shot though, as currently USB-C to 10GbE is only afforded to TB3/TB4/USB4 connectivity and would commit a great deal of internal lane distribution to that port to accommodate this potential upgrade.
• As previously alluded to, perhaps user integration of this upgrade slot on previous DS923+ devices was too low to justify accommodating this feature in the newest iteration.

Any of those reasons, or others, might well be why Synology decided to rescind this feature on this device. Nevertheless, it is something of a bitter pill that this device will not be featuring the ability to scale up out of the potential 5GbE bonded network connection that it arrives with and likely serves as a slight bottleneck to more high-performance hard drives in the SATA bays, as well as a significant cap on using SATA SSDs or M.2 NVMes in storage pools via the provided slots.

The AMD Ryzen R1600 and V1500B are both embedded CPUs used across Synology’s NAS lineup, but they serve distinct roles depending on the target user and workload. The R1600 is a dual-core, four-thread processor with higher clock speeds (2.6GHz base / 3.1GHz boost), making it ideal for environments that prioritize single-threaded performance—such as general file sharing, light server tasks, and basic backup operations. It has a TDP of 25W and is commonly found in more entry-level to mid-range Synology NAS models like the DS723+ and DS923+. By contrast, the V1500B is a quad-core, eight-thread CPU running at a lower base clock of 2.2GHz, but it delivers greater efficiency and significantly better multi-threading performance—essential for virtual machines, Docker containers, multiple user sessions, and parallel workflows. Its lower TDP of 16W also makes it a more efficient option for always-on deployments in business settings.

CPU Comparison: AMD Ryzen Embedded V1500B vs R1600

What makes the V1500B particularly notable in the DS925+ is that this CPU was previously reserved for Synology’s larger SMB and enterprise-tier systems, such as the DS1621+, DS1821+, and DS2422+. By introducing it into a prosumer-class 4-bay NAS, Synology is clearly continuing its long-standing trend of moving mature hardware platforms down into lower product tiers over time, as the cost of components becomes more accessible and manufacturing scales improve. This strategy enables Synology to offer higher-tier performance at mid-tier price points, effectively refreshing their product range while maintaining price consistency. For users who prioritize multi-tasking, virtualized workloads, or long-term scalability, the arrival of the V1500B in the DS925+ marks a significant shift in capability for this tier of NAS.

Want to Understand How Synology NAS Product Refreshes Work, as well as Why Synology Chooses Certain Hardware? Read my article below:

Synology DS925+ NAS HDD and SSD Compatibility?

Unfortunately, there is no mention of Synology’s position on third-party hard drive and SSD compatibility on the new DS925+ confirmed yet. Realistically, basing it on the predecessor and other Synology Plus Series devices, at the very least, we’re going to see a repeat of the priority towards Synology’s own series of hard drives and SSDs, with a handful of third-party drives from Seagate, Western Digital, and Toshiba added to the support list. This has now become the status quo with the majority of Synology Plus Series and above devices, and if this device rolls out with that, I’m not going to say that it’s perfect, but at the very least it does still leave a narrow window open for users to use third-party hard drives without the system spitting alerts or amber warnings at you during setup.

As the system is being listed on the Amazon pages without drives included, that at the very least removes the concern of many that Synology may have been proceeding down the pre-populated system route, or being more rigid on the lock-in of the drives you can use on the system. Nevertheless, there is still the matter of the M.2 NVMe slots and whether this system will continue with the policy of third-party drives only being supported for use as caching, whereas Synology’s own M.2 NVMe drives support both caching and storage pools. It will most certainly continue with this position.

Synology DS925+ NAS Price and Release Date?

As originally predicted last month, the pricing of the DS925+ will be largely the same as that of the DS923+, as Synology is always keen to maintain the pricing at each tier of its portfolio year on year—even if sometimes that can result in the hardware being a little more lean despite the cost of components going up. I kind of respect how long Synology has been able to maintain the same price for their prosumer 4-bay device, right? All the way back since 2015, it has always arrived at that similar £550 price. Keep in mind that the price listed on the early leaked Amazon.co.uk page includes VAT, whereas pricing listed in other countries like the U.S. will likely not include tax.

With regards to the intended release date and availability of the DS925+, the Amazon leak page appears to indicate the 7th of May. Now, whether this has always been the plan by the brand when refreshing all of its currently existing product line, or it is a launch date that has been changed rapidly in light of discussions surrounding tariffs and stock travelling around the world, is yet to be confirmed. Nevertheless, that seems like a fairly reasonable launch date in light of the information—originally appearing online with the product page added to Amazon on April 8th—and the slow but steady gear Synology goes through when making a product live across traditional online retailers. You can use the links below to monitor the availability and price of the Synology DS925+ on Amazon, as it will redirect to your own region via the link. Anything purchased via these links will result in a small commission to me (Robbie) and Eddie at NASCompares, which really helps us keep doing what we do.

Synology DS923+ vs DS925+ NAS – Buy Now or Wait?

When comparing the Synology DS923+ and DS925+, the differences are subtle but important depending on your priorities. Both NAS units share the same price point, run Synology’s DSM software with identical features, and include the same baseline 4GB DDR4 ECC memory (expandable up to 32GB). They also both lack integrated graphics, feature four SATA drive bays, and offer two M.2 NVMe Gen 3 slots for SSD caching. However, the DS925+ gains an edge in raw parallel processing power, featuring a quad-core, eight-thread AMD V1500B CPU, which translates to more virtual CPUs (vCPUs) for virtual machines and containerized applications. It also benefits from dual 2.5GbE ports, enabling up to 5GbE performance with Link Aggregation or SMB Multichannel, compared to the 2x 1GbE ports on the DS923+, which top out at 2GbE combined. Additionally, the DS925+ offers a faster expansion interface via USB-C (6Gbps) versus the older eSATA (5Gbps) on the DS923+.

That said, the DS923+ still holds certain advantages. Its AMD R1600 CPU features a higher clock speed, which may offer better single-threaded performance in lighter tasks or low-concurrency applications. Crucially, the DS923+ supports an optional 10GbE upgrade via its mini PCIe slot, a feature completely removed in the DS925+, which could be a deal-breaker for users planning to grow into a higher-speed networking environment. So, should users buy the DS923+ now or wait for the DS925+? If 10GbE upgradeability or faster per-core performance is important for your workload, the DS923+ is still a strong option. However, if you’re prioritizing multi-threaded performance, better default network speeds, and a more modern expansion standard, the DS925+ is the more forward-looking choice—particularly for virtualization and container-heavy environments. Ultimately, both devices serve the same class of user, but choosing the right one depends on whether your focus is scalability or efficiency out of the box.

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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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Synology DS401+ Review: A Big Leap in Data Portability

Synology has once again redefined innovation with the launch of its latest device, the DS401+, a radical departure from traditional NAS design. Unlike anything in their existing lineup, the DS401+ is a compact, ultra-portable single-bay system that arrives with 8GB of pre-installed storage.

While its modest appearance might lead some to question its capabilities, this device is full of surprises and packed with what Synology describes as “next-level user-driven expandability.” Upgrades are a breeze, requiring nothing more than confidence, persistence, and maybe a little brute force.

Connectivity is as streamlined as it gets, with USB 2.0 ensuring compatibility with virtually every system released in the past 20 years.

Performance skeptics will be pleasantly surprised to learn that the DS401+ boasts transfer speeds of up to 8GB per second—a metric achieved under rigorous, real-world conditions involving trajectory and velocity.

While traditional benchmarks focus on read/write speeds, Synology’s new direction explores the physics of momentum as an alternative measurement of data mobility. One of the standout features of the DS401+ is its offsite backup functionality.

Designed for those constantly on the move, users can effortlessly transfer data, pop the DS401+ into a bag, and take their backup anywhere—whether that’s to work, the grocery store, or an accidental adventure sparked by a missing cat collar, missing your train and leaving your bag at home – can’t question it, that’s a pretty solid off-site backup!

While the DS401+ doesn’t support DSM, Synology’s usual operating system, it does come with pre-installed software of a different nature. Details remain scarce, but early reports suggest a mysterious blend of anti-ransomware tools, possibly paired with rudimentary antivirus protection.

Whether this is a security feature or just a cleverly disguised README file remains to be seen. Nevertheless, the DS401+ clearly takes a bold stance on cybersecurity—even if no one knows exactly what it’s doing.

File sharing has never been more intuitive. With the DS401+, users can now share files simply by passing the device to someone else. There’s no need for network mapping, no passwords to remember, and absolutely no waiting for uploads. This tactile approach to data transfer offers unmatched immediacy and person-to-person encryption powered by trust. For those concerned about future expansion, Synology has teased a “Forb” edition, rumored to support even more aggressive upgrade techniques.

And for power users who demand more from their tiny NAS, Synology has introduced the DS401+ Forb, a “four-bay” variant that somehow fits into an even smaller form factor than the original. Early hands-on impressions describe it as “smaller than the palm of your hand but twice as confident.” While there’s no visible evidence of four bays, Synology assures customers that the extra capacity is there if you’re willing to think small enough. Expansion remains as simple as ever—just apply additional USB drives using light percussion.

The launch date of the Synology DS401+—April 1st—is no coincidence. Known globally as April Fools’ Day, it’s a time when tech companies occasionally tease products that walk the line between absurdity and brilliance.

From its minimalist design to its unconventional “performance” metrics, every detail feels like a carefully crafted nudge and wink to the audience. It’s a playful reminder that innovation sometimes requires not just thinking outside the box—but joking about the box entirely.

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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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New Synology NAS for First Half of 2025 Revealed – DS925+, DS1825XS+, DS625Slim, DS1525+ and More

After what seems like quite a while for many, we have finally got pretty large confirmation that Synology are refreshing a large number of their Desktop (and a couple of Rackmount systems) devices – as well as launching a few new storage media options. This new information arrives via ChipHell user ‘nineeast‘ in a recent forum post. I am still in the process of identifying the event that the photo below was taken from, but given the preponderance of people taking photos, it won’t be long before this spreads further. This is of course the potential that this is a hoax… but (as you will see later in the article) the chiphell post is not the only source. Nevertheless, it looks like Synology are getting set to refresh a huge number of solutions, launching their DS925+, DS425+, DS225+, DS1525+, DS1825+, DS725+, DS625slim, DS1825xs+ and RS2825RP+ between now and Summer 2025. So, let’s discuss what these refreshed devices bring and whether they deserve your data.

*Update* In order to better track each of the new Synology NAS revealed at this event, I have made update pages for each device below. Additionally, as mentioned in the video, I am canvassing user feedback on these new releases (ideally existing Synology NAS users and/or SIs – system integrators) for a follow up video soon. put your feedback in the comments below or in the Reddit thread HERE

• Synology DS925+ NAS News https://nascompares.com/news/synology-ds925-nas-news/
• Synology DS1525+ NAS Leak https://nascompares.com/news/synology-ds1525-nas-revealed/
• Synology DS425+ NAS Revealed https://nascompares.com/news/synology-ds425-nas-revealed/
• Synology DS1825+ NAS News https://nascompares.com/news/synology-ds1825-nas-news/
• Synology DS425+ NAS News https://nascompares.com/news/synology-ds425-nas-revealed/
• Synology DS1825xs+ NAS Revealed https://nascompares.com/news/synology-ds1825xs-nas-revealed/
• Synology DS225+ NAS News https://nascompares.com/news/synology-ds225-nas-revealed/
• Synolgoy DS625slim 6-Bay NAS Revealed https://nascompares.com/news/synolgoy-ds625slim-6-bay-nas-revealed/
• Synology DS725+ NAS Revealed https://nascompares.com/news/synology-ds725-nas-revealed/

Credit to nineeast on Chiphell forum

Which Synology Solutions were Revealed at the Synology Event?

The big deal here is that it is tremendously rare for Synology to reveal their roadmap of solutions, let alow share it with users in such a detailed fashion. Synology have always been tremendously restrained when it comes to revealing their product refreshes (and new product lines). That said, refreshes of products in their portfolio periodically is pretty normal, and most Synology solutions will see a refresh every 2.5-5years (depending on the product tier, with XS series devices generally having a longer refresh cycle), and many have been wondering about when a refresh to the x22/23 range of devices would arrive, and in what form it would take. The TLDR list of solutions shown were:

DESKTOP SOLUTIONS	RACKMOUNT SOLUTIONS	EXPANSIONS	MEDIA
DS1825+ – AMD V1500B, 2.5GbE ×2 DS1525+ – AMD V1500B, 2.5GbE ×2 DS925+ – AMD V1500B, 2.5GbE ×2 DS725+ – AMD R1600, 2.5GbE ×1 DS625slim – Intel J4125, 2.5GbE ×1 DS425+ – Intel J4125, 2.5GbE ×1 DS225+ – Intel J4125, 2.5GbE ×1 DS1825xs+ – AMD V1780B, 2.5GbE, 10GbE + OOB	RS2825RP+ – AMD V1780B, 10GbE	RX1225RP – Suitable for certain RS series devices DX525 – Suitable for certain DS series devices	SNV5420 Series – M.2 2280 NVMe SAT5221 Series – 2.5” SATA SSD HAT5310-12T/16T – 3.5” SATA HDD HAT5310-4T/8T – 3.5” SATA HDD HAT3320-8T – 3.5” SATA HDD

The biggest takeaway in these shared images seems to be that the bulk of the solutions in this 2025 year refresh are going to remain largely the same, but with two main changes across the board.

Credit to nineeast on Chiphell forum

Thise changes are 1GbE network interfaces will be upgraded to 2.5GbE interfaces universally, and expansion devices that would have previously used eSATA as a means of connectivity will now be USB-C (as well as a reshuffle of the CPUs in the product tiers/families around), but we will get onto that latter point in a moment. Further information and images have also been shared by user ‘ERROR204‘ on imnks, another storage *& network related forum, as well as bringing further information on the expansion devices. The DS1525+, DS925+ and DS725+ will serve as refreshes of the DS923+, DS723+ and DS1522+ NAS. It’s unclear whether they will be using that mini PCIe upgrade card like the existing series (the E10G20-T1-MINI) as the slide below indicates that they will not, but the DS925+ and DS1525+ will see the R1600 Dual Core / 4 Thread Ryzen processor in their predecessor replaced with the v1500B 4 Core / 8 Thread CPU (previously used in the 6/8/12 Bay desktop NAS devices. The DS725+ however will remain as the R1600, but will see the 1GbE NICs upgraded to 2.5GbE.

Credit to ERROR204 on imnks.com

Interestingly, the default memory on the DS725+ will increase to 4GB of ECC Memory (as opposed to the 2GB in the DS723+ predecessor). However the slide below also indicates that it will no longer support the mini PCIe 10GbE adapter. So it’s a mixed bag in the DS725+ refresh really. This slide also indicates that the USB-C connected expansion will seemingly remain at 6Gb/s transfer speeds – which is a little odd, given USB 3.2 Gen 1 is 5Gb/s and USB 3.2 Gen 2 is 10Gb/s – something to ponder.

Credit to ERROR204 on imnks.com

Next is the ‘media’ series of devices and also a return of the Synology SLIM series. The DS625slim arrives (refreshing the DS620slim from 2020) and the DS425+ and DS225+ arrive as refreshes for the comparatively (for Synology’s MO) new DS224+ and DS423+ NAS. These will be continuing to use the existing Intel J4125 Quad Core Celeron CPU from 2019/2020 (something I know will not please everyone), but will also see upgrades to 2.5GbE from the 1GbE on their predecessors. Additioanlly, I think we can assume the DS425+ will have the 2x M.2 NVMe slots of it’s predecessor.

Credit to ERROR204 on imnks.com

Now the DS925+ (a refresh of the DS923+) has the upgrade from the R1600 CPU to the V1500B CPU we mentioned earlier, alongside the new USB-C expansion support (the DX525) and 2.5GbE NICs, so I think we can assume the DS1525+ will be similarly reprofiled from the DS1522+, but I am unsure if it will have 2x USB-C ports instead of 2x eSATA (almost certainly, but not 100%). I think many user are going to have mixed feelings once again about the CPU choices present here in the bulk of these new refreshes.

Credit to ERROR204 on imnks.com

Now onto those two 8 Bay devices, the DS1825+ and DS1825xs+ (serving as refreshes of the DS1821+ and DS1823xs+ respectively). As covered in my video in 2024 about previously leaked information on the DS1825+, it seems that both of these devices will have the same CPU as their predecessor devices, but will see upgrades from their 1GbE ports towards 2.5GbE (with the DS1825xs+ maintaining it’s 10GbE copper connection). All other specifications (M.2 slots, expandability, memory, etc) will all seemingly remain the same – though I think we can once again assume that expansion ports will be USB-C in line with the DX525 box.

For many, it will be a little disappointing that we did not see a 6-Bay model arrive and in fact there has not actually been a 6-Bay Synology NAS since 2020 (when the DS1621+ and DS1621xs+ were launched), increasing fears that Synology are eliminating that tier of their portfolio. However, there is ZERO confirmation on this and the 6 Bay option in the Synology store is still present for the DS1621+ and DS620slim, though the DS1621xs+ has disappeared (likely replaced internally with the 8 bay XS option).

 

Finally, there is the storage media that was listed. Some drives we already knew about. For example, the SAT5221 Series of SATA SSDs already appeared on vietcorp (HERE), but the HAT3320 is seemingly a refresh/new line in the Synology Plus series of hard drives – and there have been rumours circling for a while that these would be Seagate Ironwolf drives, but currently unconfirmed.

Finally, there is the Synology SNV5420 series – a new M.2 NVMe media drive range, but it is currently unclear if this is a complete refresh of the SNV3400/SNV3410, or as the naming convention seems to indicate, a higher performance/class of M.2 NVMe SSDs. This is something that has been LONG DEMANDED as Synology still have a solid insistence on their systems/add-on cards with M.2 NVMe Support HAVE TO be their own media drives if you want to use the slots of Storage pools, yet the SNV3400 range and it’s variations are comparatively low speed and high priced vs the rest of the M.2 NVMe SSD market as a whole.

So, that’s everything we know so far. Let’s now discuss what we think together in the comments!

The New Synology 2025 Product Line Up – What I Like and What I Don’t!

I have mixed feelings about the entire Synology refreshed line up – on the one hand I DO think there is a meaningful refresh here on the DS925+ and DS1525+ NAS. No one was expecting Synology to completely change this product family, as they have already made it pretty clear that these two system profiles are designed now more for the SMB user, small business, container deployer and those with file processing needs – i.e not multimedia as the focus. So, them upgrading this from the R1000 CPU in the x23 series to a V1000 CPU (doubling the cores and threads) will be tremendously welcome – as will 2.5GbE out the box (though I would like more clarification on the E10G22-T1-MINI 10GbE upgrade card support – as it looks like this is now not supported and that would be a real shame). Also, as much as its a bummer to see the V1500B CPU that Synology have already had on their products in 2020 in these 4 and 5 Bay solutions, they ARE good follow up CPUs over the R1600 in profile, and still have a length support time with AMD backing them up. All that said, the DS725+ seems pretty hard done by here, in fact the DS425+, DS225+ and DS725+ all seem to essentially be the same NAS, but with the 1GbE NICs swapped out with 2.5GbE. I mean, if the price remains exactly the same as the DS423+, DS224+ and DS723+ (and no other hardware surprises arrive in the form of no NVMe slots, etc), then these are…technically…refreshes. But more like a DS224+II, than a whole new DS225+.

Regarding the Intel Celeron devices, I am a little puzzled more than anything else. 2.5GbE on these is good (even if we overlook the fact that 2.5GbE has been fairly standard on ALL NAS systems in place of 1GbE since 2020 from everyone else), but the J4125 CPU is a CPU that has long since retired by Intel (indeed, Intel Celeron naming itself is long gone in favour of the Alder Lake and Twin Lake N processors). So unlike the strong support afforded to the AMD processors I mentioned above, the J4125 seems a remarkably dated choice right now. Still, better some kind of graphical capable CPU in the line up than none at all. Still, odd choice. As there are a lot of holes in these specifications, it’s tough to make a full list of what is good and bad, plus we have to acknowledge that things CAN change during development. So, I’ll hold off for now with anything concrete on my own thoughts, but again, I would love to chat in the comments here or on YouTube for your own thoughts.

Things we still need confirmation on!

As I just mentioned, there are still a lot of gaps in these specs and till we have the full picture, we can’t judge anything! So, here are the questions I still have about these new refreshes that remain unanswered for now:

• HDD and SSD Compatibility, will it be largely the same as the existing 22/23/24 series devices (i.e largely Synology drives, but a few Seagate/WD/Toshiba drives), or will these new series be the first to arrive with strict Synology-only drive media and/or pre-population?
• How is the USB-C 6Gb/s? Is it an adapter, or a USB-C Port on the old lane internally?
• Where is the 6-Bay?
• Ambiguity at best, complete removal at worst, of the 10GbE upgradability of the 2/4/5 Bay V1500B option NAS’. Is this for real?
• Is the SNV5420 a new high performance M.2 NVMe?
• Why refresh all of these at the same time? Some solutions like the DS1823xs+ or DS224+ are very early in their expected run, so a refresh so soon seems unnecessary. So why now?

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