Should You Buy the Terramaster F4 SSD NAS?

The TerraMaster F4 SSD is a 4-bay all-flash NAS aimed at home and prosumer users who want compact, quiet, and high-speed network storage based on SSD technology. Priced at $399, it represents the third entry in TerraMaster’s SSD-focused lineup, positioned below the larger 8-bay F8 SSD and the i5-powered F8 SSD Plus. This model is designed to deliver a balance between affordability and performance, featuring the Intel N95 quad-core processor, 8GB of DDR5 memory (upgradeable to 32GB), and four M.2 NVMe SSD slots across mixed-speed PCIe lanes. While its architecture targets lower power consumption and silent operation (rated at 19 dB in standby), it also integrates a 5GbE network port, USB 3.2 connectivity, and a toolless design to ease deployment. Designed for both turnkey usage with TerraMaster’s TOS 6 OS or as a flexible bare-metal option for TrueNAS or UnRAID, the F4 SSD sits at a crossroads between convenience and configurability—providing users with both preconfigured software and open-ended potential for third-party operating systems.

Terramaster F4 SSD NAS Review – Quick Conclusion

The TerraMaster F4 SSD delivers a compelling package for users seeking an affordable, compact, and all-flash NAS solution with a strong blend of performance and usability. Its toolless, space-saving design makes installation easy, while the inclusion of four M.2 NVMe slots—two at PCIe 3.0 x2 and two at x1—offers fast storage potential, albeit with some asymmetry that could affect RAID performance in certain configurations. Powered by the efficient Intel N95 CPU and 8GB of DDR5 memory, the system supports multimedia streaming, Docker containers, virtual machines, and AI-powered photo indexing, all handled by the continually improving TOS 6 operating system. Key strengths include the 5GbE networking for faster data access, support for mixed-capacity SSDs via TRAID, and very low noise and power consumption, making it ideal for home environments. However, limitations such as the single network port with no redundancy, lack of ECC memory support, and the presence of mixed-speed NVMe slots may be off-putting to power users or small businesses seeking higher resilience and uniform throughput. Still, at $399, the F4 SSD offers a well-rounded balance of speed, features, and ease of use for home users, prosumers, and content creators who want SSD-level performance without the complexity or cost of higher-end systems.

SOFTWARE - 7/10

HARDWARE - 8/10

PERFORMANCE - 7/10

PRICE - 9/10

VALUE - 9/10

8.0

PROS

Compact, toolless chassis with easy-access thumb screw and SSD installation
All-flash NVMe architecture with support for four M.2 2280 SSDs
5GbE network port enables high-speed local and remote transfers
TRAID and TRAID+ allow mixed-capacity SSDs and seamless storage expansion
TOS 6 OS includes Plex, Jellyfin, Docker, VM support, and AI photo indexing
Quiet operation (19 dB) and low power usage (32W under load)
Priced competitively at $399 for a turnkey SSD NAS

CONS

Single 5GbE port with no failover or link aggregation
Two of the four SSD slots are limited to PCIe Gen3 x1, creating potential RAID bottlenecks
Non-ECC DDR5 memory may not meet strict data integrity requirements

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Terramaster F4 SSD NAS Review – Design and Storage

The TerraMaster F4 SSD adopts a compact, minimalist design that is clearly optimized for silent, flash-only operation. Measuring just 138mm x 60mm x 140mm and weighing 0.6 kg, it is one of the smallest 4-bay NAS chassis on the market, aided by its exclusive use of M.2 NVMe SSDs instead of traditional 3.5-inch hard drives. This all-flash design allows the chassis to maintain a reduced footprint while still offering significant internal capacity—up to 32TB using four 8TB drives. The unit features a clean, industrial aesthetic with smooth surfaces and subtle branding, aligning with TerraMaster’s recent design choices in their SSD NAS series. Importantly, the internal layout supports top-to-bottom convection airflow, with side ventilation and smart fan controls designed to balance cooling and acoustics.

Installation is clearly a design priority here. The F4 SSD uses a toolless construction held together by a single thumbscrew, allowing the user to remove the outer casing in seconds. Internally, SSDs are inserted via a pull-out drawer mechanism with dedicated mounting trays, and there’s ample clearance around each M.2 slot for installing large passive heatsinks.

Notably, the SSD slots are laid out in such a way that their orientation lines up directly with the two 50mm rear fans. These fans are positioned to channel airflow across both the SSDs and the large passive heatsink mounted over the Intel N95 CPU, ensuring that even under sustained workloads the thermals remain controlled without relying on noisy active cooling systems.

The internal storage configuration is somewhat mixed in terms of interface speed. Of the four M.2 slots, two operate over PCIe 3.0 x2 lanes, and two are limited to PCIe 3.0 x1. This introduces a disparity in potential transfer speeds—approximately 1.6GB/s per drive for the faster pair, and around 700-900MB/s for the slower ones.

While this approach is a practical trade-off due to CPU lane limitations, it may pose bottlenecks in RAID scenarios where all four drives are used in a single pool. However, for users willing to configure their SSDs into two independent volumes, or who rely on TerraMaster’s TRAID system with mixed-capacity drives, the system can still make efficient use of available bandwidth.

The F4 SSD supports a range of RAID configurations including TRAID, TRAID+, RAID 0, 1, 5, 6, and 10, as well as JBOD and single-drive modes. TRAID, TerraMaster’s hybrid RAID system, is especially notable here as it supports storage expansion using drives of different sizes—an advantage for users who plan to incrementally upgrade their SSDs over time. This flexibility is rare in entry-level NAS units, and helps avoid the traditional pitfalls of having to replace all drives at once in standard RAID arrays. The software layer automatically calculates parity and adjusts volume size without requiring complete data migration or reconfiguration.

From a practical perspective, the move to SSD-only architecture enables faster access times, reduced power usage, and significantly lower noise. TerraMaster reports a typical power draw of just 32W under full load with four SSDs, around 11-13W with all 4 SSD in a ‘read state’ with the CPU at sub 5%, and only 8W in complete hibernation. The fan noise sits below 19dB during idle operation, placing it among the quietest NAS units available. For environments such as living rooms or bedrooms where noise sensitivity is key, this silent thermal design makes the F4 SSD particularly well-suited for home multimedia centers and always-on photo backup servers.

Terramaster F4 SSD NAS Review – Internal Hardware

At the heart of the TerraMaster F4 SSD is the Intel N95 processor, a quad-core, four-thread CPU based on the Alder Lake-N architecture. Clocked at a base frequency of 1.7GHz with a boost up to 3.4GHz, it offers efficient processing power with a low 15W TDP, which contributes to the unit’s low thermal output and power consumption. While not designed for heavy computational workloads, the N95 supports Intel Quick Sync for hardware-accelerated video transcoding and includes integrated UHD graphics capable of handling 4K@60Hz decoding.

This makes the F4 SSD suitable for multimedia servers like Plex or Jellyfin, which are supported out of the box by TerraMaster’s TOS operating system. The CPU also provides nine PCIe Gen3 lanes for connecting NVMe drives, network interfaces, and USB ports—something that TerraMaster appears to have carefully balanced across components.

The system is equipped with 8GB of DDR5 memory pre-installed in a single SODIMM slot, with support for up to 32GB. The memory is non-ECC, which is expected for this price bracket and CPU class, though some users may view this as a drawback in data-critical environments. DDR5 support is a notable inclusion, offering higher bandwidth and lower power consumption than DDR4.

Because there is only a single memory slot, upgrades require replacing the pre-installed module entirely, but access is straightforward thanks to the removable chassis design. Combined with the N95 CPU and SSD storage, the memory allows for lightweight virtualization, Docker container deployment, and simultaneous access by multiple users—within the limitations of the CPU’s architecture.

Internally, the F4 SSD supports four M.2 2280 NVMe drives: two connected via PCIe 3.0 x2, and two via PCIe 3.0 x1. This setup is a direct consequence of the limited PCIe lane count on the N95 CPU, and reflects a compromise between cost and performance. While this layout means that users may encounter performance bottlenecks if building a single RAID array across all four slots, TerraMaster’s OS allows for flexible configuration, including the creation of separate volumes. The system also includes a substantial heatsink on the CPU and aligns airflow directly over both the CPU and storage bays. Together, these components form a power-efficient, quiet, and competent NAS platform optimized for SSD workloads.

Terramaster F4 SSD NAS Review – Ports and Connections

The TerraMaster F4 SSD is equipped with a practical selection of ports that reflect its mid-tier positioning. The standout feature is a single RJ-45 5GbE Ethernet port, offering five times the bandwidth of standard Gigabit connections and double that of 2.5GbE. This enables significantly faster file transfers when paired with compatible switches or direct-to-PC connections, making it a viable solution for photo and video editing over the network. However, the inclusion of only one network port—without redundancy or support for link aggregation—limits failover options and prevents more advanced networking setups, a drawback that may be felt in business or multi-user deployments. Users seeking dual LAN ports for redundancy or trunking will need to resort to USB-to-Ethernet adapters, which are supported via the system’s high-speed USB 3.2 ports.

In addition to its network interface, the F4 SSD features three USB 3.2 Gen 2 ports rated at 10Gbps each—two Type-A and one Type-C. These ports support a variety of functions, including attaching external storage for backups, connecting USB-based 2.5GbE/5GbE adapters, or even interfacing with uninterruptible power supplies (UPS). This level of connectivity is somewhat uncommon in compact SSD NAS systems and adds useful flexibility, particularly for users operating the unit as a personal cloud or remote access point. Notably absent, however, are legacy USB 2.0 ports or additional network expansion slots (such as PCIe or SFP+), which would have extended the F4 SSD’s upgradeability for more advanced users.

On the display side, the NAS includes a single HDMI 2.0b port, allowing for direct output of its graphical interface or multimedia playback, though this feature is seldom used in headless NAS operation. Still, its presence supports limited desktop use cases or direct-attached displays for VM consoles and Docker GUIs. Internally, the Intel N95 CPU provides up to three display outputs, but only one is exposed in this system. The absence of a VGA port, PCIe expansion slots, or front-facing ports keeps the design clean but does reduce options for advanced customization. Ultimately, the F4 SSD provides just enough I/O for mainstream home or small office use, while intentionally leaving out more enterprise-grade connectivity.

Terramaster F4 SSD NAS Review – TOS Software and Services

The TerraMaster F4 SSD ships with TOS 6, the company’s latest revision of its NAS operating system. TOS 6 has matured significantly compared to earlier versions, now offering a more stable and responsive interface with support for modern NAS functionality. The OS features a multi-window desktop-like environment accessible via browser, along with mobile and desktop clients for streamlined access.

The interface, though less polished than Synology’s DSM, has seen improvements in usability, with clearer organization of applications, settings, and user tools. Key system features include centralized backup, file indexing, user/group controls, and integrated snapshot functionality for shared folders and iSCSI volumes. For home users and prosumers, these updates represent a notable step forward, especially when paired with the low latency benefits of SSD storage.

Among TOS 6’s more prominent features is TRAID (TerraMaster RAID), a hybrid RAID system designed to offer flexible storage expansion and mixed-capacity drive support. Similar in principle to Synology’s SHR, TRAID allows users to start with a small number of SSDs and expand later with larger ones without reconfiguring the entire array.

This flexibility is especially useful in all-flash systems where high-capacity SSDs can be cost-prohibitive to install all at once. In addition to TRAID and TRAID+, the system also supports traditional RAID levels (0, 1, 5, 6, 10), JBOD, and single-drive configurations. Volume expansion, RAID migration, SSD TRIM, and S.M.A.R.T. monitoring are supported natively, along with scheduled snapshots and USB-based backups.

TOS 6 includes a growing suite of first- and third-party applications that address multimedia, surveillance, and cloud connectivity. The F4 SSD supports Plex Media Server, Jellyfin, Emby, and TerraMaster’s own Multimedia Server for DLNA/UPnP streaming. Users can also deploy Docker containers, virtual machines, and network services such as iSCSI, FTP, WebDAV, and VPN servers.

Multimedia support is further bolstered by hardware-accelerated 4K video decoding via the Intel UHD iGPU, making the NAS suitable as a home media hub. AI photo indexing is also integrated into Terra Photos, allowing automated categorization of people, pets, and scenes. For mobile users, the TNAS app offers automatic photo/video uploads and remote file access, enhancing backup automation and content management.

Enterprise and security features are present but modest. TOS 6 includes AES-encrypted folders, SSL certificate import, two-factor authentication, and alerting via email or desktop notifications. Integration with AD domains and LDAP clients is supported, but ECC memory is not, reflecting the system’s home and small-office focus. Additional cloud integration is provided via CloudSync, which supports Google Drive, OneDrive, Amazon S3, Dropbox, Baidu, and Alibaba Cloud.

For users requiring simple hybrid-cloud backups or syncing across multiple platforms, this unified interface is functional and sufficient. While TOS lacks the enterprise depth of some competing NAS platforms, its overall range of applications and services is now competitive for most home or light professional needs.

Terramaster F4 SSD NAS Review – Verdict and Conclusion

The TerraMaster F4 SSD presents itself as a well-considered entry into the compact, all-flash NAS segment, balancing low noise, energy efficiency, and competitive performance at a sub-$400 price point. With its fanless NVMe-based design, Intel N95 quad-core processor, and DDR5 memory, it meets the essential needs of home and small office users looking for a reliable and responsive storage solution. The inclusion of TerraMaster’s increasingly capable TOS 6 operating system, featuring AI-driven photo management, centralized backup, and Docker/VM support, makes it more than just a network storage device—it becomes a lightweight but versatile data center for the home. Its TRAID support allows for mixed SSD deployments with easy expansion, which is particularly attractive to users upgrading gradually or working within budget constraints. The thoughtful internal layout and cooling also ensure performance remains consistent even under sustained load, without sacrificing the near-silent operation.

However, the F4 SSD is not without caveats. The use of a single 5GbE port, without redundancy or aggregation, may deter users requiring network failover or higher throughput for simultaneous operations. Additionally, although the PCIe lane allocation strategy maximizes the N95’s limited bandwidth, the asymmetry between Gen3 x2 and x1 slots could bottleneck RAID performance depending on how volumes are configured. When compared to the larger F8 SSD or DIY options with dual 10GbE or ECC support, the F4 SSD may feel limiting to power users or business environments with stricter reliability requirements. That said, for the vast majority of home users, content creators, and prosumers looking for an all-in-one, high-speed NAS that blends well into living spaces, the F4 SSD delivers a solid and accessible solution. Its price-to-performance ratio, combined with the simplicity of deployment and maturing software ecosystem, makes it a compelling option in the growing market of SSD NAS devices.

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Avez-vous déjà remarqué que l'application Photos d'iOS peut vous suggérer des souvenirs en lien avec des concerts ou d'autres événements ? Apple semble en mesure de deviner pourquoi vous étiez à un endroit.

Prime Day 2025 Deals Megathread – Terramaster NAS

Prime Day 2025 is not just a normal sales thing, it’s when the best deals becomes a quest for many, especially tech enthusiasts and savvy shoppers. This November, as we approach the holiday season, our focus sharpens on a segment that’s increasingly popular in the tech community: Network Attached Storage (NAS) solutions, particularly Terramaster products known for their quality and dependability in data storage. If you’re planning to enhance your home network, set up an efficient media server, or secure your files with reliable backup, Terramaster’s range might have the perfect solution for you. With Amazon Prime Day’s impressive discounts, it could be the ideal time to invest in your tech infrastructure. We’ve sorted the deals by region,.so we’ve got you covered.

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To our dear readers in the United Kingdom, we haven’t forgotten you. Here’s a curated list of the top Terramaster NAS and DAS deals available on your shores this Prime Day 2025.

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For our Canadian friends, we’ve compiled a list of unbeatable offers just for you.

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Want to follow specific category? Also Read...Terramaster F4 SSD NAS ReviewTerramaster F4 SSD NAS ReviewTerramaster Prime Day 2025 - ASynology vs Terramaster NAS - Synology vs Terramaster in 202Terramaster TrueNAS Scale/CoreTrueNAS Terramaster NAS FULL IHow to Run UnRAID on Your TerrUnRAID Terramaster NAS FULL InTerramaster F6-424 Max NAS Rev Subscribe You can also follow specific search terms:

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

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If you like this service, please consider supporting us. We use affiliate links on the blog allowing NAScompares information and advice service to be free of charge to you.Anything you purchase on the day you click on our links will generate a small commission which isused to run the website. Here is a link for Amazon and B&H.You can also get me a Ko-fi or old school Paypal. Thanks!To find out more about how to support this advice service check HEREIf you need to fix or configure a NAS, check Fiver Have you thought about helping others with your knowledge? Find Instructions Here  

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Want to follow specific category? Also Read...Terramaster F4 SSD NAS ReviewTerramaster F4 SSD NAS ReviewTerramaster Prime Day 2025 - ASynology vs Terramaster NAS - Synology vs Terramaster in 202Terramaster TrueNAS Scale/CoreTrueNAS Terramaster NAS FULL IHow to Run UnRAID on Your TerrUnRAID Terramaster NAS FULL InTerramaster F6-424 Max NAS Rev Subscribe You can also follow specific search terms:

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

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If you like this service, please consider supporting us. We use affiliate links on the blog allowing NAScompares information and advice service to be free of charge to you.Anything you purchase on the day you click on our links will generate a small commission which isused to run the website. Here is a link for Amazon and B&H.You can also get me a Ko-fi or old school Paypal. Thanks!To find out more about how to support this advice service check HEREIf you need to fix or configure a NAS, check Fiver Have you thought about helping others with your knowledge? Find Instructions Here  

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Synology VS Terramaster NAS Drives in 2025 – Which One Deserves Your Data?

Synology and TerraMaster are two well-established brands in the network-attached storage (NAS) industry, each targeting a range of users from home enthusiasts to small and medium-sized businesses. Synology, a Taiwanese company with over two decades in the field, is widely recognized for its DSM (DiskStation Manager) software, which emphasizes stability, security, and integration within a tightly controlled ecosystem. TerraMaster, while newer to the market, has steadily gained ground by offering hardware-focused, cost-effective solutions with increasing software support via its TOS (TerraMaster Operating System) platform.

I want to provide a side-by-side comparison between Synology and TerraMaster as they stand in 2025, focusing on the real-world differences in hardware, storage, software, and security. The goal is to outline the practical strengths and weaknesses of each brand without leaning heavily toward subjective preferences or historical bias. This is especially relevant for users reevaluating Synology due to recent policy shifts, or for those considering TerraMaster as a flexible and affordable alternative.

When evaluating Synology’s hardware catalog, the company demonstrates a clear strategy of segmenting performance tiers through tightly integrated systems. The FS (FlashStation) series targets ultra-low latency workloads with powerful multi-core CPUs and all-flash designs. For instance, the FS6400 and FS3600 offer 240,000 and 195,000+ 4K random write IOPS respectively, built for high-throughput environments. The HD series goes a different direction, pushing density with up to 300 drives in models like the HD6500, which pair with dual 10-core CPUs and provide over 6,600 MB/s throughput. Meanwhile, the SA and XS/XS+ series address scalable performance and redundancy needs, offering dual-controller setups, high RAM ceilings, and optional Fibre Channel or 25/40GbE expansion. Synology’s Plus and Value series provide consumer-grade flexibility, but these are becoming increasingly closed ecosystems with limited hardware compatibility and optional expansion cards restricted to specific interfaces or models.

Category	Synology Example Models	TerraMaster Example Models	CPU & RAM Range	Typical Use Case
Entry-Level (2-4 Bay)	DS223, DS423, DS224+, DS423+	F2-212, F4-223, F4-210	Quad-core 1.7–2.2GHz, up to 32GB ECC	Personal cloud, backups, media streaming
Mid-Range (4-6 Bay)	DS1621+, DS1522+, DS1821+	F4-424, F6-424, F4-424 Pro	Quad-core 2.2GHz, up to 32GB ECC, NVMe cache	SOHO/SMB file sharing, light virtualization
Performance Tier (6-8 Bay)	RS1221+, RS2423+, DS3622xs+, DS1823xs+	U4-423, T6-423, T9-423	Quad to Octa-core Xeon, up to 64GB+, 10GbE support	Heavy multi-user access, surveillance, VM use
Enterprise / Rackmount	RS4021xs+, SA6400, SA3610, UC3200	U12-500 Plus, U16-722-2224, T12-450	10–12 core CPUs, 128GB+ RAM, SAS, PCIe expandability	Virtualization clusters, iSCSI SAN, backups at scale
All-Flash / NVMe Focused	FS2500, FS3600, FS6400, SA3400D	F8 SSD Plus, U8-522-9400, U24-722-2224	8–24 cores, all-SSD, 10/25/40GbE, NVMe-only storage	High IOPS databases, virtualization, low-latency workloads

TerraMaster, in contrast, focuses its value proposition heavily on maximizing hardware capabilities per dollar. Even in their midrange, systems like the F6-424 Max or F4-424 Pro include Intel Celeron or i3 CPUs, 2.5GbE or 10GbE connectivity, NVMe SSD support, and upgradeable RAM—all within sub-$700 price ranges. Larger units like the T12-500 Pro or U24-722-2224 scale storage up to 24 bays or beyond, while still offering competitive CPUs and abundant connectivity options. TerraMaster also maintains a vast lineup of hybrid RAID-capable DAS and NAS systems, including USB 3.2 Gen 2 enclosures for fast, direct-attached storage. Unlike Synology, TerraMaster maintains open compatibility with third-party drives and offers more consistent support for M.2 NVMe storage expansion, SSD caching, and even integrated GPU support in some models.

Synology DS925+ NAS		Terramaster F4-424 / Max / Pro
Check Amazon in Your Region for the Synology NAS Solutions	Check B&H for the Synology NAS Solutions	Check Amazon in Your Region for the Terramaster NAS Solutions	Check B&H for the Terramaster NAS Solutions

Overall, while Synology’s premium hardware—especially in enterprise segments like FS, HD, and SA series—is clearly capable and built with specific high-performance use cases in mind, the general direction of the brand has shifted toward tightly controlled environments with gradual upgrades. In contrast, TerraMaster’s approach offers broader hardware scalability and modularity across more price points, with emphasis on high-speed networking and expansive storage configurations. For users who prioritize full hardware utilization, third-party component compatibility, or budget scalability, TerraMaster offers more flexibility. Meanwhile, users looking for tightly integrated, support-rich systems—especially in enterprise workloads—may lean toward Synology, albeit at a higher cost per feature.

Category	Feature	Synology DSM (7.2)	TerraMaster TOS (5.1 / optional 6.x)	Notes
Core OS	OS Version	DSM 7.2	TOS 5.1 standard, TOS 6 optional on newer models	TOS 6 has refreshed UI and app changes
	Alternate OS Install	Not supported	Allows Unraid, TrueNAS without voiding warranty	Huge flexibility advantage for TerraMaster
	Web Interface	Polished, modern DSM interface	Modern but simpler UI	DSM is more mature
	Mobile Apps	Many DS apps across mobile platforms	TNAS Mobile, limited scope	Synology has broader mobile toolset
File Services	SMB/NFS/AFP/WebDAV	Full support	Full support	Core services present on both
	iSCSI Support	Native GUI-based iSCSI manager	iSCSI support available	Parity here
RAID & Storage	RAID Options	RAID 0/1/5/6/10 + SHR (Hybrid RAID)	RAID 0/1/5/6/10 + TRAID (TerraMaster Hybrid RAID)	Both support flexible hybrid RAID
	Snapshots	Btrfs with scheduling/versioning	On Btrfs-capable models	Model-dependent on TOS
	Deduplication	Btrfs-based dedup	With Dedup Manager	Available on both with GUI
	Encryption	Volume/folder/drive encryption + WORM	Volume encryption + WORM	TerraMaster supports WORM as well
	SSD Caching	Read/write SSD caching	SSD caching supported	Hardware-dependent for both
Virtualization & Containers	Virtual Machines	Synology VMM (Virtual Machine Manager)	VirtualBox-based VM manager	Less integrated in TOS but available
	Docker Support	Full Docker with GUI	Available via App Center	Equal in function
	GPU Passthrough	Not supported	Not supported	Absent on both platforms
AI & Surveillance	AI Features	Facial/object detection via DVA models	Facial/object detection	DSM AI Services in NVR/CCTV xclusive to DVA NAS models or their own cameras
	Surveillance Suite	Surveillance Station with licensing	Surveillance App (Beta)	TOS app is newer and evolving
Media & Streaming	Plex Media Server	Native app	Native support	No difference
	Jellyfin	Docker/homebrew	Native Jellyfin app	Edge to TerraMaster
	Video Player App	Video Station EOL	No official native player	Use Plex/Jellyfin on both
Backup & Sync	Backup Solutions	Hyper Backup, Active Backup, USB/Cloud	TerraSync (Synology Drive-like), Rsync, USB, Cloud Backup	TOS has clear parity now
	Cloud Sync	Native Cloud Sync app	CloudSync app	Supported on both
Remote Access	DDNS + Tunnel	QuickConnect	TNAS.online	Both offer simplified remote access
Security & Access	Security Scanner	Malware, ransomware, audit, firewall tools	Full scanner + Isolation Mode	Both systems offer advanced security
	VPN Server	OpenVPN, L2TP, PPTP via GUI	OpenVPN/L2TP support	GUI VPN tools available
	SSL Certificates	Let’s Encrypt + custom certs	Let’s Encrypt + certs	Equal support
	2FA Support	TOTP, authenticator app, email	TOTP 2FA	Parity on login security
App Ecosystem	App Center	Extensive native apps and 3rd party	App Center with essential tools	Synology has a larger catalog
	Package Manager	synopkg CLI + GUI	App Center (GUI only)	CLI package management is a Synology edge

 TerraMaster’s TOS (TerraMaster Operating System), currently in version 5.1 with version 6 available on select systems, has seen rapid growth in capabilities and usability over the last few years. While it doesn’t yet match DSM’s polish, it has made significant strides in offering equivalent functionality. TOS supports Btrfs-based snapshots, Rsync and CloudSync for cloud backup, Docker container deployment, and VirtualBox-based virtualization. While the latter is less tightly integrated than Synology’s VMM, it does allow for third-party VM deployment in a usable way.

TerraMaster has also developed TerraSync, a synchronization tool designed to rival Synology Drive, and supports both media management and AI-enhanced photo sorting with apps like Terra Photos. However, many of TOS’s functions rely more heavily on community-driven or open-source third-party applications, resulting in a slightly less unified experience overall.

In terms of application ecosystems, Synology’s App Center clearly offers the broader and deeper catalog, particularly for business users. First-party applications such as Synology Office, Chat, MailPlus, and Note Station deliver a productivity-focused alternative to cloud services, and their Surveillance Station software stands out as one of the most powerful NVR platforms in the NAS market.

TerraMaster’s App Center includes essential tools but lacks the same level of first-party development. However, it makes up for this in openness: TerraMaster supports a wide array of third-party and open-source platforms more freely, including Jellyfin and Unraid. Moreover, TerraMaster allows alternative operating systems like TrueNAS to be installed without voiding the warranty, which adds considerable flexibility for tech-savvy users. Overall, Synology delivers a more unified and polished software experience, while TerraMaster emphasizes adaptability, freedom, and cost

Synology vs Terramaster NAS – Security and Safety

Synology has long maintained a strong reputation in the NAS sector for prioritizing system security, and this is evident in how thoroughly security is integrated throughout DSM. Synology’s Security Advisor provides active scanning for vulnerabilities, misconfigurations, and password weaknesses, while its firewall, account protection, and IP auto-blocking features offer practical layers of defense against unauthorized access. Synology also supports comprehensive SSL certificate management via Let’s Encrypt and offers two-factor authentication (2FA) with TOTP and hardware key support. From a business continuity perspective, DSM includes native WORM (Write Once Read Many) capabilities and encrypted shared folders to protect sensitive data from tampering or deletion. Perhaps most critically, Synology operates a dedicated PSIRT (Product Security Incident Response Team), frequently publishes security advisories, and participates in high-profile vulnerability testing events like Pwn2Own—demonstrating a serious commitment to vulnerability discovery and remediation.

TerraMaster’s security offering has become more robust over recent years, particularly with the development of Isolation Mode—a unique feature allowing users to instantly sever all external access and remote services with a single click. This acts as a kill switch in the event of a suspected breach or malware event. TOS also includes a system-level security scanner that checks for basic vulnerabilities and enables 2FA, SSH restrictions, and SSL certificate deployment. While TerraMaster’s platform does not offer as many granular policy tools as DSM, it supports core protocols like OpenVPN and L2TP for secure remote access and regularly issues firmware updates in response to new threats. The company also now provides greater transparency regarding CVEs (Common Vulnerabilities and Exposures), though its advisory frequency and scope remain smaller than Synology’s.

Security Feature	Synology DSM	TerraMaster TOS	Notes
System Hardening	Proactive hardening (limited root access, secure defaults)	Moderately hardened; more configurable access	Synology limits risky configurations by design
Security Scanner	Built-in DSM Security Advisor with customizable scan depth	TOS Security Center (less detailed on TOS 5.x)	Synology provides more actionable alerts
2FA Support	TOTP-based (authenticator apps, email)	TOTP-based	Parity on two-factor authentication
SSL Certificate Support	Native Let’s Encrypt + custom certs via GUI	Let’s Encrypt + custom certs via GUI	Equal support, easy HTTPS setup
Firewall Management	GUI-based port/IP firewall with profiles	Firewall settings available (less granular)	Synology allows more granular firewall policy creation
Isolation Mode / Kill Switch	Not available	Isolation Mode disables all external access with one click	Advantage: TerraMaster for emergency lockdowns
Vulnerability Response (PSIRT)	Dedicated PSIRT, public advisories updated monthly	Less frequent disclosure, fewer details published	Synology actively discloses and patches
Security Bug Bounty Program	Yes – active white-hat reward program	No public bounty program known	Synology engages with global researchers
Third-Party App Restrictions	Limited for security; sandboxed services	More open but requires user discretion	Synology prioritizes closed ecosystem safety
Remote Access Protection	QuickConnect includes traffic relay + DDNS + 2FA	TNAS.online DDNS with isolation toggle	Both offer encrypted remote access, but Synology uses multiple layers
Malware Detection	Real-time malware scanner, browser warnings	Included scanner, but simpler in scope	DSM scanner is more active and integrated
Backup Verification	Integrity verification in Active Backup	TerraSync + cloud/USB support (manual checks)	DSM offers automated backup health reports
Surveillance Hardening	Encrypted video storage + HTTPS + IP blocklist	Surveillance App with HTTPS, still evolving	Synology Surveillance Station is more mature and secure
Ransomware History	2014 “SynoLocker” (quickly patched)	2021–22 “Deadbolt” attacks (multiple waves)	TerraMaster more affected in recent years
Update Frequency	Frequent monthly patches	Less frequent, varies by model	DSM has a consistent schedule and transparency

Despite these advancements, TerraMaster’s security record has faced scrutiny in the past due to incidents like the Deadbolt ransomware attacks. These incidents, which also affected other NAS vendors, prompted significant user backlash and a push for more proactive security updates and faster patching. TerraMaster has since responded by improving software integrity and introducing layered protection features, but the lingering perception remains that Synology maintains a stronger and more proactive security posture overall.

This perception is reinforced by Synology’s investment in ongoing vulnerability research, bug bounty programs, and a broader portfolio of security-focused tools. As it stands in 2025, Synology continues to lead in NAS security maturity, while TerraMaster has made meaningful progress—especially with unique features like Isolation Mode—but still has ground to cover in enterprise-level protections and threat response.

Synology vs Terramaster NAS – Conclusion and Verdict

Comparing Synology and TerraMaster in 2025 ultimately highlights a clear philosophical divide between the two NAS brands. Synology continues to build upon a long-standing focus on refined software, tight integration, and enterprise-grade security. Its DSM platform remains one of the most polished and feature-rich operating systems in the NAS space, offering a wide selection of first-party tools for backup, surveillance, virtualization, and secure access. However, this ecosystem is increasingly closed, with stricter hardware compatibility requirements and limited support for third-party drives, SSDs, and expansions. For users who prioritize reliability, ease of use, and support from a mature software ecosystem, Synology remains a compelling—if sometimes restrictive—option.

TerraMaster, by contrast, leans into flexibility and hardware value. Its broad portfolio includes NAS units ranging from entry-level to high-performance multi-bay SSD systems, often at lower price points than Synology’s equivalents. TOS 5.1 and the newer TOS 6 have brought meaningful improvements in UI and functionality, while still maintaining a more open approach to compatibility and user customization. Features like native Jellyfin support, VirtualBox VM deployment, and the ability to install TrueNAS or Unraid without voiding warranty make TerraMaster a standout for DIY-leaning users or those with niche requirements. However, its software, while improving, does not yet match the polish or depth of Synology DSM, especially in areas like virtualization, surveillance, and enterprise security.

In the end, choosing between Synology and TerraMaster depends heavily on user needs and expectations. Synology suits users who want a highly stable, all-in-one solution with minimal configuration and long-term support. TerraMaster offers greater adaptability and value for power users who are comfortable managing third-party apps and want to stretch their hardware investment further. Neither approach is inherently better—each has its strengths and trade-offs. Buyers seeking a tightly controlled, secure environment may gravitate toward Synology, while those who value hardware scalability, open software choices, and affordability may find more freedom with TerraMaster.

Synology DS925+ NAS		Terramaster F4-424 / Max / Pro
Check Amazon in Your Region for the Synology NAS Solutions	Check B&H for the Synology NAS Solutions	Check Amazon in Your Region for the Terramaster NAS Solutions	Check B&H for the Terramaster NAS Solutions

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