The Terramaster F4-425 PLUS NAS Review – The New $500+ NAS Standard?

The TerraMaster F4-425 Plus represents a significant step forward in the brand’s 4-bay NAS lineup, targeting users who demand capable hardware and broad feature support at a mid-range price point. Retailing at $569.99, or $484.99 during its introductory discount, it is positioned to compete directly with systems like the Synology DS925+ and QNAP TS-464, both of which occupy similar price and hardware tiers. TerraMaster’s intention with this model is to deliver a “jack of all trades” device that suits both home multimedia environments and small business offices. Internally, it uses Intel’s quad-core N150 processor, part of the newer Twin Lake architecture, with a base clock of 1 GHz and a turbo frequency up to 3.6 GHz. This CPU is paired with 16GB of DDR5 memory, offering a notable upgrade in bandwidth and responsiveness compared to previous DDR4-based TerraMaster models.

Complementing that performance core are three PCIe 3.0 x1 M.2 NVMe slots and four SATA drive bays, supporting a combined raw capacity of up to 144TB when fully populated. This configuration allows the device to accommodate both large-scale HDD storage for bulk data and high-speed SSD arrays for caching or dedicated performance pools. Dual 5GbE network ports on the rear enable theoretical aggregate transfer speeds exceeding 1,000 MB/s, aligning with the system’s positioning as a performance-focused yet affordable NAS. TerraMaster’s TOS 6 operating system comes preinstalled, providing modernized storage management, AI-based photo organization, and security tools like HyperLock WORM protection and isolation mode. Altogether, the F4-425 Plus arrives as one of the most fully featured mid-tier NAS options available in 2025, combining strong hardware, software maturity, and quiet, power-efficient design suited to both personal and professional use cases.

The Terramaster F4-425 PLUS NAS Review – Quick Conclusion

The TerraMaster F4-425 Plus delivers one of the most complete mid-tier NAS packages currently available, balancing strong hardware, efficient design, and flexible software at a highly competitive price. Its Intel N150 processor, 16GB of DDR5 memory, and dual 5GbE ports provide ample speed for data-heavy workloads, while three M.2 NVMe slots add rare versatility for caching or SSD-based pools. The all-metal enclosure maintains low temperatures and quiet operation, and the TOS 6 operating system has matured into a capable platform with snapshot protection, Docker, virtualization, and AI photo management. Although it lacks premium details such as drive locks and redundant fans, and the interface remains less refined than Synology DSM or QNAP QTS, the F4-425 Plus stands out as a practical and forward-looking NAS. It bridges affordability and professional capability, making it suitable for home users, content creators, and small offices that need reliable, fast, and adaptable network storage.

Terramaster F4-425 PLUS NAS
Amazon in Your Region for the Terramaster F4 SSD NAS @ $569 ($489.99 till 19th Nov)	Terramaster F4-425 PLUS – $569	B&H for the Terramaster F4-425 plus NAS @ $569.99

The Terramaster F4-425 PLUS NAS Review – Design & Storage

The exterior design of the TerraMaster F4-425 Plus maintains the brand’s familiar compact metal chassis but introduces small refinements that improve both usability and thermals. Measuring 150 by 181 by 219 millimeters and weighing just under 3 kilograms, it fits comfortably into a home office or studio setup without generating significant heat or noise. The enclosure is almost entirely metal, with a brushed silver finish that enhances rigidity and passive cooling compared with earlier plastic-faced designs. Four individual drive trays occupy the front panel, each featuring a simple click-and-load mechanism for 3.5-inch or 2.5-inch drives. Although there are no locking latches or LCD displays, the trays are tool-free and straightforward to handle. A single 120mm fan at the rear provides adjustable cooling across smart, low, and high-speed profiles, maintaining an operational noise level as low as 20.9 dB(A) when idle with drives installed, according to TerraMaster’s own test figures.

From a structural perspective, the F4-425 Plus has clearly benefited from improved thermal management. The metal shell acts as a heat spreader, with typical external temperatures ranging from 25 to 27°C across the enclosure after extended operation, even under multi-day workload testing. Internal drive bays were observed to maintain around 27 to 29°C, while the rear ports and fan area registered between 36 and 38°C during prolonged use. These figures indicate an efficient heat dissipation design, aided by the more conductive chassis material and smart fan calibration. For users concerned with energy efficiency, the power draw remains modest thanks to the Intel N150 processor’s low TDP, allowing the system to idle at roughly 13 watts with SSDs installed and scale to around 60 watts under sustained load with four enterprise-class HDDs spinning.

In terms of drive configuration, the NAS supports up to four SATA 6Gb/s drives and three M.2 2280 NVMe SSDs. This combination provides a theoretical maximum raw capacity of 144TB, assuming four 30TB HDDs and three 8TB SSDs. The inclusion of three NVMe slots rather than the more typical one or two is a notable strength. Each operates on a PCIe 3.0 x1 lane, delivering real-world throughput of approximately 800 to 900 MB/s per SSD, suitable for caching or storage pools. This setup makes it possible to allocate two drives for cache acceleration while dedicating the third to an independent SSD-based pool for high-speed operations like video editing or database hosting. Such flexibility is rare at this price point and broadens the system’s appeal to users with both large data sets and high-performance requirements.

Storage management is handled through TOS 6, TerraMaster’s web-based operating system, which supports a wide range of RAID configurations including TRAID, TRAID+, JBOD, and traditional RAID 0, 1, 5, 6, and 10. TOS 6 also enables SSD caching, snapshots, and HyperLock write-once-read-many functionality for data integrity. Users can assign storage pools to specific workloads, such as separating SSD-based scratch space from HDD archival volumes. Combined with the new graphical interface and more detailed health monitoring tools, it provides a much more transparent overview of drive temperatures, utilization, and S.M.A.R.T. status. For additional flexibility, the system supports online RAID migration and expansion, meaning users can start small and scale capacity over time without data loss.

Beyond local storage, the device integrates directly with TerraMaster’s CloudSync service, which connects to providers like Google Drive, OneDrive, Dropbox, and Baidu Cloud. Hybrid storage configurations allow partial replication or tiered backup between the NAS and the cloud, offering an extra level of redundancy for professional workflows. External connectivity through USB 3.2 ports also supports direct backups to DAS enclosures or portable drives. Altogether, the F4-425 Plus’s design emphasizes efficient cooling, solid construction, and versatile storage architecture, making it a flexible foundation for both data-heavy projects and long-term digital archiving.

The Terramaster F4-425 PLUS NAS Review – Internal Hardware

Internally, the TerraMaster F4-425 Plus is structured around Intel’s N150 processor, a 4-core, 4-thread CPU from the Twin Lake generation. Built on a 6W TDP architecture, this chip delivers a significant efficiency advantage over the previous N5095-based systems while offering a higher burst clock of up to 3.6 GHz. The CPU integrates Intel UHD Graphics, allowing 4K hardware decoding for H.264, H.265, VC-1, and MPEG-4, which is particularly beneficial for Plex, Emby, or Jellyfin users who want native transcoding without GPU add-ons.

This combination makes the system viable not only as a file server but also as a local multimedia hub, capable of decoding and streaming 4K video at up to 60 frames per second. Despite being a low-power chip, its instruction set includes AES-NI hardware encryption, ensuring efficient data security without notable throughput loss when encryption is enabled.

The system’s memory architecture uses a single DDR5 SO-DIMM slot, populated with a 16GB non-ECC module by default and expandable up to 32GB. The adoption of DDR5 over DDR4 marks a generational improvement in bandwidth and latency, leading to faster multitasking, smoother virtualization performance, and reduced overhead when handling multiple users or services. The memory module is non-ECC but benefits from on-die error correction at the hardware level, offering stability improvements over standard DDR4 implementations. This approach aligns with the unit’s target demographic of small offices, creators, and advanced home users who want server-grade responsiveness without enterprise complexity.

Storage connectivity within the system is distributed between four SATA III 6Gb/s interfaces managed by an ASMedia controller and three PCIe 3.0 x1 lanes dedicated to M.2 NVMe SSDs. This configuration ensures balanced throughput for simultaneous HDD and SSD activity. Internally, the layout is straightforward, providing easy access to both the memory slot and M.2 bays via the removable top panel. The power supply is a single 90W external brick, keeping internal temperatures lower and simplifying maintenance.

Together, the hardware configuration represents a thoughtful balance between efficiency, expandability, and performance, aimed at users who need consistent data access, multimedia capabilities, and reliable long-term operation without excess noise or heat.

The Terramaster F4-425 PLUS NAS Review – Ports and Connections

The TerraMaster F4-425 Plus offers a broad range of connectivity designed to meet both high-speed networking and general expansion needs. On the rear panel, two 5GbE RJ-45 network ports serve as the central performance feature. These are among the first dual 5GbE implementations in a mid-tier NAS, and each port operates through its own dedicated PCIe 3.0 x1 lane, avoiding bandwidth contention. In testing, each port achieved full theoretical throughput, confirming proper lane allocation. Users can enable link aggregation or SMB multichannel for multi-user workloads, although saturating both ports simultaneously requires fast SSD or hybrid storage configurations. These ports support IPv4/IPv6, VLAN tagging, link aggregation, and Wake-on-LAN, making the system suitable for both small office environments and direct workstation connections.

Complementing the network interfaces, the F4-425 Plus includes four USB 3.2 ports: three Type-A and one Type-C, all operating at 10Gbps. These ports can handle external DAS enclosures, UPS devices, or high-capacity backup drives. The inclusion of a front-mounted USB port improves convenience for ad hoc backups or quick file transfers, addressing a long-standing omission in earlier TerraMaster models. Additionally, an HDMI 2.1 output is positioned on the rear, though its practical use remains limited within TOS, which lacks a native display interface. It may, however, prove useful for third-party operating systems such as Unraid or TrueNAS, where direct console access or local media playback is desired.

Overall, the port layout is clean and efficient, optimized for straightforward cable management. The system’s single large fan sits adjacent to the networking array, allowing for effective airflow without excessive cable obstruction. Power is supplied through a standard barrel connector linked to an external 90W adapter, which helps reduce internal heat buildup. Though it lacks built-in 10GbE or PCIe expansion, the dual 5GbE setup provides more than enough bandwidth for its class, especially when paired with NVMe caching. Users can also connect the NAS to TerraMaster’s USB-based DAS units for storage expansion or off-site replication, offering flexibility without compromising portability or noise levels.

The Terramaster F4-425 PLUS NAS Review – Tests, Noise, Heat and Power Consumption

Performance testing on the TerraMaster F4-425 Plus showed that the system comfortably meets its advertised speed class, particularly when networked over a single 5GbE connection. Using four Toshiba MG-series 7200 RPM enterprise hard drives configured in RAID 5, the system achieved full saturation of one 5GbE port during both AJA and ATTO benchmark tests, reaching consistent read and write speeds around 500 to 520 MB/s. When tested with mixed media files totaling 50.5 GB, it completed the transfer in approximately 3 minutes and 45 seconds, equating to an average throughput of about 224 MB/s.

This is a strong result for a mechanical-drive setup, reflecting efficient caching and balanced SATA bandwidth. SMB Multichannel and link aggregation are supported, though the CPU’s available PCIe lanes limit simultaneous dual-port saturation. Even so, the system handles multiple concurrent transfers and backups without a noticeable decline in throughput.

Testing with NVMe SSDs improved overall responsiveness considerably. The three M.2 2280 PCIe 3.0 x1 slots each sustained sequential transfer rates between 800 and 900 MB/s, allowing the NAS to maintain a high level of random IOPS for metadata-heavy workloads. When used as cache devices, these drives accelerated small-file transfers and application access times, especially when paired with the system’s 16GB of DDR5 memory.

TerraMaster’s TOS 6 supports flexible use of these drives, enabling independent storage pools or hybrid cache layers, depending on the task. In sustained transfers over SMB and iSCSI, the system achieved write speeds close to 950 MB/s and reads near 1020 MB/s when using SSD-based arrays, validating the advantage of dual 5GbE interfaces for all-flash or mixed-tier environments.

Power consumption during operation remained modest, aligning with the platform’s efficient design. With no hard drives installed and three SSDs active, idle draw measured around 13.3 watts. Adding four 7200 RPM HDDs increased idle power to 55 watts and full-load consumption to roughly 61–63 watts under concurrent read/write activity. These figures indicate a well-balanced design that prioritizes power efficiency without restricting performance. Fan speed settings affect both thermals and acoustics predictably: in low-speed mode, the NAS operated near 33 dB(A), while mid and high-speed profiles raised that figure to 37 and 39 dB(A) respectively. During heavy disk operations, readings peaked briefly at around 43 dB(A), which is reasonable given the metal chassis and high-RPM drives used in testing.

Thermal results further underscored the system’s stability. Surface readings from the aluminum body remained between 25°C and 27°C on average, while drive bays hovered at 28–30°C after extended workload sessions. The rear fan exhaust area reached approximately 36–38°C under sustained load. The efficient heat dispersion of the chassis prevented thermal throttling during prolonged transfers or virtualization testing, even with all seven storage devices active. This consistent temperature range indicates that TerraMaster’s choice of single-fan cooling and full-metal housing achieves a practical balance between noise, airflow, and longevity.

The Terramaster F4-425 PLUS NAS Review – Verdict and Conclusion

The TerraMaster F4-425 Plus demonstrates how far the company’s mid-range NAS lineup has progressed in terms of hardware refinement and real-world usability. By combining Intel’s efficient N150 processor with 16GB of DDR5 memory, dual 5GbE connectivity, and triple M.2 NVMe slots, it provides a specification normally reserved for higher-priced units. The build quality, centered around a full-metal chassis and quiet cooling design, contributes to consistent thermals and low power usage even under multi-day workloads. While the design omits premium touches like drive locks or redundant fans, the emphasis on practicality and efficient cooling makes it a dependable solution for continuous operation. From a user experience perspective, the integration of TOS 6 represents TerraMaster’s most stable and capable operating system to date, offering improved security features, cloud synchronization tools, snapshot management, and flexible storage configurations that appeal to both home and small office users.

From a value standpoint, the F4-425 Plus stands out as one of the most competitively priced NAS units in its category. At $569.99, or $484.99 during the initial discount period, it delivers strong network and storage performance that aligns closely with rivals from Synology and QNAP while retaining open installation flexibility for third-party platforms such as Unraid or TrueNAS. Its combination of high-speed connectivity, compact design, and mature software environment makes it an appealing option for anyone seeking a 4-bay system capable of multitasking across media streaming, data backup, and light virtualization. Although it cannot fully match the polish of Synology DSM or the plugin ecosystem of QNAP QTS, TerraMaster has successfully positioned this device as a bridge between affordability and professional performance, solidifying its place as one of the more balanced NAS releases of 2025.

Terramaster F4-425 PLUS NAS
Amazon in Your Region for the Terramaster F4 SSD NAS @ $569 ($489.99 till 19th Nov)	Terramaster F4-425 PLUS – $569	B&H for the Terramaster F4-425 plus NAS @ $569.99

Terramaster F4-425 PLUS NAS PROs

Terramaster F4-425 PLUS NAS CONs

• Dual 5GbE network ports with full independent bandwidth for high-speed transfers + lots of USB-to-5GbE $30 upgrades in the market now • Three PCIe 3.0 x1 M.2 NVMe slots supporting cache or storage pool configurations • Intel N150 processor with integrated graphics enabling 4K hardware decoding and AES-NI encryption • 16GB DDR5 memory (expandable to 32GB) offering improved bandwidth and multitasking performance • Full-metal chassis with efficient thermals, low noise levels, and minimal vibration • Comprehensive RAID and storage management through TOS 6 with snapshot and HyperLock-WORM protection • Supports Docker, virtual machines, Plex, Emby, and Jellyfin natively within TOS 6 • Competitive pricing with strong value relative to Synology and QNAP alternatives

• Cheaper N150 NAS Systems have arrived earlier in 2025 • 5GbE adoption is low, so only larger 10GbE ready groups (via auto-negotiation) will enjoy the benefits of 5GbE • TOS 6 interface and app ecosystem remain less polished than top-tier NAS platforms

 

 

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Need Advice on Data Storage from an Expert?

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Terramaster F4-425 PLUS (and F2-425 PLUS) NAS Coming Soon

The Terramaster F2-425 PLUS (8 GB, priced around US$399) and F4-425 PLUS (16 GB, priced around US$569) represent Terramaster’s latest step forward in its midrange NAS portfolio, arriving near the end of 2025 as a response to the growing competition from brands such as QNAP, Synology, UGREEN, and Asustor. Both models share the same Intel N150 quad-core processor running up to 3.6 GHz, use DDR5 memory, and include multiple M.2 NVMe slots, positioning them well above Terramaster’s previous generation of Celeron-based systems. The F4-425 PLUS is a four-bay platform that expands on the two-bay F2-425 PLUS by offering higher throughput and significantly greater storage flexibility, making it suitable for heavier workloads and multi-user environments. Terramaster appears to have used this release to redefine what can be expected in the $400–$600 NAS tier, especially by including dual 5 GbE network ports, three NVMe SSD slots, and native hardware transcoding for 4K and even 8K content through integrated Intel UHD graphics. Together these systems aim to deliver competitive all-in-one solutions for home and small-office users who require reliable local backup, multimedia streaming, and virtualization support without moving into enterprise-grade pricing.

Note – The Terramaster F4-425 PLUS and F2-425 PLUS NAS have now been launched, and are available to buy HERE for $569 and HERE for $399 (with 15% off as an introductory price till November 21st)

Terramaster F4-425 PLUS & F2-425 PLUS NAS Hardware Specifications

Terramaster’s F2-425 PLUS and F4-425 PLUS NAS units share a unified hardware architecture centered on Intel’s N150 processor, part of the Twin Lake family. This 4-core, 4-thread CPU operates at a base clock of 1.0 GHz and boosts up to 3.6 GHz, with integrated Intel UHD graphics that support hardware acceleration for 4K and 8K video decoding. While the N150 is not a high-power processor by desktop standards, it provides excellent balance between performance and efficiency for NAS workloads such as Plex or Jellyfin media streaming, file indexing, and lightweight virtualization. The use of this chip also aligns Terramaster’s lineup with newer offerings from competitors who have adopted similar architectures in their 2025 models.

The memory configuration has moved to DDR5, marking a notable generational shift from the DDR4 modules used in previous Terramaster systems. The F2-425 PLUS includes 8 GB of DDR5, while the F4-425 PLUS doubles this to 16 GB, both expandable up to 32 GB. DDR5 provides higher bandwidth and reduced latency, which benefits multitasking environments, particularly when running Docker containers, multiple user sessions, or AI-driven indexing services such as local photo recognition. This upgrade positions the new PLUS series closer to the performance levels found in more expensive NAS systems while maintaining efficient power draw and thermal output. In terms of storage capacity, the F4-425 PLUS can house up to four 3.5-inch or 2.5-inch SATA drives, while the smaller F2-425 PLUS accommodates two. Both models also integrate three M.2 NVMe slots, allowing up to 8 TB per SSD and enabling users to reach a maximum combined capacity of approximately 144 TB in the four-bay model. Terramaster’s hybrid storage design allows these NVMe drives to serve either as a dedicated storage pool or as cache acceleration for HDD volumes, giving users flexibility to prioritize capacity or performance. The inclusion of three M.2 slots is unusual at this price tier and stands out against most two- and four-bay competitors, which typically provide only two.

For network connectivity, Terramaster has equipped both models with dual 5 GbE ports. This configuration effectively doubles the throughput available in the previous 2.5 GbE generation and can deliver an aggregated bandwidth of up to 10 Gbps through link aggregation. Although the lack of a dedicated 10 GbE port might limit direct single-link transfers, the two 5 GbE ports provide redundancy, failover, and multi-user performance advantages. Both models also include a front-mounted USB-C port and rear USB 3.2 Gen 2 Type-A connectors for high-speed external backups and peripheral connections, reflecting a refinement in Terramaster’s chassis design compared with earlier models that relied solely on rear ports.

Cooling and chassis design remain consistent with Terramaster’s recent metal-based enclosures, using active fan ventilation with independent drive bay access. The F4-425 PLUS features dual rear fans to maintain airflow across four bays, while the F2-425 PLUS employs a single high-efficiency unit. The new layout provides improved front-to-rear ventilation and easier access to drive trays. Internally, the systems do not include a PCIe expansion slot, which limits the potential for GPU or high-speed NIC upgrades but simplifies internal lane allocation for the CPU’s nine available PCIe lanes. Terramaster appears to have distributed these lanes between the three M.2 interfaces and dual network controllers to maintain balanced throughput across all functions.

 

How the F4-425 PLUS Compares with QNAP TS-464 and Synology DS425+

The QNAP TS-464 is built around the Intel Celeron N5095, a 4-core, 4-thread processor that can boost up to 2.9 GHz, and ships with 8 GB of DDR4 memory. It supports four SATA bays plus M.2 expansion and includes dual 2.5 GbE ports that can be aggregated for improved bandwidth. QNAP’s system benefits from a mature software ecosystem, offering HDMI output, virtualization support, and extensive backup tools. In performance testing, it delivers sequential speeds around 560 MB/s under RAID 5, limited mainly by network bandwidth. Compared with the F4-425 PLUS, the TS-464 offers stronger software flexibility and PCIe expandability, but its networking hardware is slower and it relies on older memory standards.

The Synology DS425+ takes a more conservative hardware route, using the Intel Celeron J4125 with four cores running at 2.0 GHz base and 2.7 GHz burst. It includes 2 GB of DDR4 memory, expandable to 6 GB, and offers one 2.5 GbE port alongside a 1 GbE port. Two M.2 NVMe slots are available but only for cache acceleration, not full storage pools. Sequential throughput typically reaches about 280 MB/s for reads and writes. Against the F4-425 PLUS, Synology’s system trails in memory, raw processing speed, and throughput potential, but maintains an advantage in software polish and long-term reliability through DSM integration.

In side-by-side terms, the F4-425 PLUS aims for a higher performance envelope. Its dual 5 GbE ports deliver aggregate throughput potential far beyond both the QNAP and Synology options, and its DDR5 memory with three M.2 NVMe slots allows flexible caching or tiered storage setups uncommon at this price tier. The trade-off lies in expandability and software maturity, where QNAP’s platform remains more modular and Synology’s DSM ecosystem offers more stability. For users focused on performance-per-dollar, the F4-425 PLUS introduces hardware that surpasses both competitors on paper, though long-term evaluation will depend on software development under TOS 6.

Terramaster TOS 6 Software

The F2-425 PLUS and F4-425 PLUS both ship with TOS 6, Terramaster’s latest operating system that replaces the earlier TOS 5 platform across its new generation of NAS hardware. TOS 6 introduces a redesigned interface with improved responsiveness and a more modular layout intended to reduce latency during multitasking.

It expands Terramaster’s range of built-in applications to include enhanced TRAID and TRAID+ hybrid array configurations, snapshot scheduling, and real-time data synchronization features. Backup utilities such as Duple Backup, Centralized Backup, TerraSync, and CloudSync provide integration across local drives, offsite NAS devices, and major cloud providers. The system also integrates hardware-assisted AES-NI encryption, supporting secure data transmission over 256-bit TLS and optional two-factor authentication. Although its design remains more lightweight than QNAP’s QTS or Synology’s DSM, it is notably faster to load and more accessible to new users.

Beyond core management tools, TOS 6 also incorporates AI-assisted photo management and multimedia indexing designed to run locally rather than relying on external cloud resources. Its facial, object, and scene recognition algorithms operate entirely on the NAS, avoiding external data transfers while maintaining privacy for personal collections. The OS additionally supports Docker and VirtualBox, enabling light virtualization tasks or deployment of third-party services without command-line setup.

Multimedia servers such as Plex, Emby, and Jellyfin can use Intel’s integrated graphics for hardware decoding, improving playback efficiency in 4K and 8K environments. While TOS 6 still trails mature ecosystems in app diversity, it delivers steady progress toward matching more established competitors, particularly for backup, synchronization, and AI-driven photo organization.

Verdict? The New4-Bay NAS Score to Beat?

The Terramaster F2-425 PLUS and F4-425 PLUS introduce a considerable upgrade to the company’s mid-tier NAS range, setting new expectations for what users can expect at the $400–$600 level. Both models adopt the Intel N150 processor, DDR5 memory, and dual 5 GbE networking, bringing performance that previously required higher-priced hardware. The F4-425 PLUS, in particular, combines four SATA bays with three M.2 NVMe slots, creating one of the most storage-flexible designs in its category. This configuration makes it a practical option for users who require hybrid pools or tiered caching but prefer to remain within consumer-level power and cost limits. Terramaster’s decision to include high-speed networking and DDR5 support at this price point demonstrates an emphasis on raw throughput and bandwidth efficiency, although it comes at the expense of PCIe expandability. From a broader market perspective, the F4-425 PLUS positions Terramaster competitively against alternatives from QNAP and Synology, trading ecosystem maturity for stronger base hardware. TOS 6 continues to evolve, offering usable AI-based media tools, secure backup systems, and local synchronization features. The platform still lacks some advanced management functions and third-party integrations seen in more established ecosystems, yet it now provides sufficient stability and depth for both professional and enthusiast users. Overall, the F4-425 PLUS presents an incremental but strategically significant advancement in Terramaster’s NAS design philosophy, marking a shift toward higher efficiency and versatility within its compact, consumer-oriented systems.

Terramaster F4-425 PLUS NAS – $569 (15% OFF at Launch till 19th Nov)	Terramaster F2-425 PLUS NAS – $399 (15% OFF at Launch till 19th Nov)

 

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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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UGREEN DH2300 NAS Review – Cloud Subscription Killer

The UGREEN DH2300 is a compact two-bay NAS system positioned within the company’s value-focused lineup, intended for users moving away from cloud-based storage platforms toward affordable private solutions. Priced around the $200 mark, it is aimed at those who prioritize simplicity and convenience over raw performance or enterprise-level control. Designed for users who typically rely on Google Drive, iCloud, or Dropbox subscriptions, the DH2300 seeks to provide a self-contained alternative with no recurring fees, offering scheduled backups, remote file synchronization, and integrated media access through UGREEN’s proprietary UGOS Pro operating system. Internally, the system is built around an ARM-based processor combining a quad-core Cortex-A72 and quad-core Cortex-A53 architecture, clocked at up to 2.2GHz, with 4GB of LPDDR4 memory and a built-in 32GB eMMC for the OS. This hardware places the DH2300 in direct competition with entry-level models such as the Synology DS223 and QNAP TS-233, though its Rockchip RK3576 processor, G52 MC3 GPU, and 6 TOPS NPU give it a modest edge in AI-assisted photo recognition, multimedia indexing, and energy efficiency. As a compact, preconfigured NAS designed for first-time adopters, the DH2300’s real focus is not to replace professional systems but to bridge the gap between mainstream cloud users and personal storage ownership, reflecting UGREEN’s broader strategy of simplifying NAS technology for general consumers.

UGREEN DH2300 NAS Review – Quick Conclusion

The UGREEN DH2300 is a compact, affordable two-bay NAS designed to bridge the gap between cloud storage and local data ownership for everyday users. Built around the Rockchip RK3576 processor—featuring two quad-core clusters of Cortex-A72 and A53 cores at up to 2.2GHz—and paired with 4GB of LPDDR4X memory, the system offers reliable ARM-level performance with efficient thermals and low noise output. Its design prioritizes simplicity, with vertical drive insertion, a single rear cooling fan, and a dedicated 32GB eMMC for UGOS Pro, which separates the OS from user data. Connectivity includes a 1GbE port, multiple USB 3.2 Gen 1 ports, and HDMI 4K60 output, while the software delivers key NAS essentials such as RAID management, snapshot recovery, cloud and USB backups, Docker support, and AI-powered photo indexing via its 6 TOPS NPU. Power consumption remains low at 9–13W depending on workload, and noise levels stay within 31–45 dBA under varying fan speeds. Although the fixed memory, single LAN port, and ambiguous CPU marketing reduce its appeal for enthusiasts, the DH2300 stands out as an efficient, straightforward, and well-priced solution for users seeking a dependable private cloud alternative without technical complexity.

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UGREEN DH2300 NAS Review – Design and Storage

The UGREEN DH2300 adopts a clean, vertical form factor made entirely of plastic, emphasizing practicality and low cost over premium materials. The enclosure is lightweight yet well-ventilated, featuring a magnetic plastic top panel with slotted air channels that promote consistent airflow across both drive bays. The overall construction favors simplicity, with drive access positioned vertically rather than through traditional caddies. This layout helps minimize the unit’s footprint, making it suitable for desktop environments where noise and vibration are key considerations. While the plastic frame lacks the rigidity of aluminum enclosures seen in higher-end NAS models, it contributes to lower noise resonance and reduced amplification of mechanical drive vibration. The minimalist aesthetic, consistent with UGREEN’s other recent NAS releases, reflects its target audience: users seeking a consumer-friendly device that blends into a home office or living space rather than a server rack.

Internally, the DH2300 supports two 3.5-inch or 2.5-inch SATA drives, each connecting directly to fixed SATA connectors mounted on the board. The drive trays are basic but functional, requiring manual screw installation rather than tool-less mechanisms. Although UGREEN has not explicitly advertised hot-swapping as an official feature, testing showed that it is technically possible to replace drives without powering down, though such actions are not recommended without confirmation from official documentation. The NAS supports standard RAID configurations, including JBOD, RAID 0, and RAID 1, as well as individual drive modes, providing adequate flexibility for redundancy or performance-based setups. Storage initialization is straightforward within UGOS, with pool creation and volume setup guided by a wizard interface that fits the product’s “set-and-forget” philosophy.

Cooling is handled by a single rear-mounted fan positioned behind the drive bays, ensuring that heat generated by mechanical disks is efficiently extracted from the enclosure. The system’s vertical drive layout assists in natural convection, drawing air from the lower portion and expelling it from the top and rear. Despite being a plastic chassis, thermal management remains effective due to the extensive side and rear ventilation grilles, which circulate air across both drives and the mainboard components. In long-term use, the design demonstrated stable internal temperatures under typical file access and synchronization loads, maintaining drive and board thermals within an expected operational range even during extended testing periods.

From a functional standpoint, the DH2300 includes an internal 32GB eMMC module reserved for UGOS, preventing users from needing to dedicate part of their main storage array to system files. This separation simplifies setup and improves reliability by isolating the operating system from data drives. However, there are no M.2 or NVMe expansion slots available, meaning caching or SSD-tiered storage cannot be implemented. This is consistent with UGREEN’s entry-level positioning for the model, and the omission helps reduce production cost while keeping the power footprint low. The 32GB internal storage performs adequately for OS updates, indexing data, and temporary system operations.

The device’s storage capacity can reach up to two 30TB drives, allowing a maximum theoretical total of 60TB raw capacity, though most users will likely configure it in RAID 1 for redundancy. This makes the DH2300 a practical fit for home backup, photo archiving, and small-scale media libraries, especially when paired with the system’s built-in applications for photos, video, and document management. Overall, the DH2300’s design and storage layout reflect its goal of balancing ease of use with functional flexibility, providing just enough configurability to support typical home NAS workloads without introducing complexity that would deter less technical users.

UGREEN DH2300 NAS Review – Internal and External Hardware

Internally, the UGREEN DH2300 is powered by the Rockchip RK3576 processor, a hybrid 8-core ARM SoC that combines four high-performance Cortex-A72 cores with four efficiency-focused Cortex-A53 cores, running at up to 2.2GHz. While UGREEN markets this configuration as an “8-core processor,” it is technically composed of two separate quad-core clusters, something the company’s documentation does not clearly explain. This lack of clarity can mislead users into expecting a single unified 8-core design, whereas in practice the chip functions as two 4-core groups optimized for different workloads. The RK3576, built on an 8nm process, delivers a solid balance between efficiency and multitasking, keeping thermals low while maintaining adequate throughput for home NAS tasks. Its integrated ARM G52 MC3 GPU supports up to 8K H.265/H.264 decoding and HDR rendering through Rockchip’s dedicated Picture Quality Engine, which also supports ACM and DCI color profiles. These capabilities allow the DH2300 to output 4K60 video via HDMI, offering lightweight media playback directly from the system interface—an uncommon inclusion in this price class. Additionally, the CPU’s built-in 6 TOPS NPU enables AI-assisted indexing and face recognition within UGOS Pro, processing such tasks locally instead of relying on cloud services.

Memory allocation on the DH2300 is fixed at 4GB of LPDDR4X, soldered to the mainboard with no expansion slot available. This restriction aligns with the model’s consumer-grade purpose, though it naturally caps Docker container and multitasking potential. The onboard memory is sufficient for file serving, indexing, and moderate background services, while the 32GB eMMC 5.1 storage is dedicated to UGOS Pro and ensures stable OS operations without user intervention. There are no NVMe or UFS storage options, which simplifies the hardware layout but limits potential caching or high-speed data tiers. Nevertheless, the RK3576’s low power draw and balanced architecture ensure consistent operation under typical workloads, even during prolonged use, with minimal heat output and silent operation under idle conditions.

Externally, the NAS presents a modest selection of connectivity options suitable for its market position. The rear hosts a single 1GbE LAN port—adequate for most home users but a notable downgrade from the 2.5GbE interface found on UGREEN’s larger models like the DH4300 PLUS. File transfers, backups, and streaming functions remain well within the limits of 1GbE for single-user environments, though network saturation can occur during multi-user access. Peripheral connectivity is handled by two USB-A 3.2 Gen 1 ports and one USB-C 3.2 Gen 1 port, all operating at 5Gbps, supporting external drives, UPS communication, or backup targets. An HDMI 2.0 port on the rear supports 4K60 output for local playback or display configuration, while system LEDs provide visual feedback for drive activity, system status, and network connection. Power is supplied by a 50W external adapter that connects via a barrel plug, keeping internal temperatures and noise low by externalizing the PSU.

The inclusion of HDMI output in such a budget-focused system underscores UGREEN’s attempt to merge NAS and home entertainment functions. Although the RK3576 chipset supports a wider range of display interfaces—including DisplayPort, MIPI, and eDP—these are not implemented in the DH2300’s design, reflecting deliberate simplification for cost and usability. The absence of multi-gigabit networking, PCIe expansion, or additional LAN redundancy limits its potential for advanced setups, yet for its intended audience the configuration remains practical. In short, the DH2300’s internal layout, despite its simplified design and some ambiguous marketing around the CPU, delivers an efficient and capable platform for mainstream home users seeking affordable private storage.

UGREEN DH2300 NAS Review – UGOS NAS Software and Services

UGREEN’s DH2300 runs the company’s proprietary UGOS Pro, a Linux-based operating system tailored for simplicity and everyday use. The interface mirrors the design language of mainstream consumer cloud platforms, featuring a desktop-style environment with drag-and-drop file management, live system monitoring, and user account controls. Although UGOS Pro shares much of its design and functionality with that found on UGREEN’s larger DH4300 PLUS model, a few service limitations appear due to the ARM-based architecture of the DH2300. These include the absence of virtual machine support and limited resource capacity for multiple Docker containers, stemming from the 4GB of fixed memory. Nonetheless, the software remains fully featured for file storage, synchronization, multimedia management, and light AI applications, and receives regular over-the-air updates that refine usability and security. The desktop and mobile clients also synchronize settings seamlessly, allowing users to manage their NAS both locally and remotely.

From a user management perspective, UGOS provides fine-grained control of accounts, permissions, and network access. Administrators can create user groups, apply password complexity policies, and define shared-folder privileges with ease. The system supports multiple file transfer protocols, including SMB, AFP, NFS, and Rsync, as well as optional WebDAV and FTP for broader compatibility. Remote access can be configured either through UGREEN’s own relay service or via LAN-only mode for tighter network security. The security dashboard consolidates features such as auto-block for repeated failed logins, two-factor authentication, firewall configuration, and selective port access rules. SSH and Telnet access are disabled by default, a responsible design choice for less experienced users, but can be enabled manually for advanced administration. These features bring the DH2300 close in functionality to entry-level NAS systems from Synology or QNAP, even though it remains less configurable overall.

Storage management is one of UGOS Pro’s more mature components. Users can create storage pools and volumes in JBOD, RAID 0, or RAID 1, with scheduled drive tests, SMART diagnostics, and Seagate IronWolf Health integration for supported drives. The storage manager also includes rebuild and repair settings that allow users to prioritise either RAID reconstruction speed or system performance during rebuilds. Snapshot protection is integrated at the folder level, with both versioned and scheduled snapshots available for data recovery. Although the system does not offer full OS-level backups, users can schedule NAS-to-NAS, NAS-to-USB, and NAS-to-Cloud synchronisation tasks using Rsync or proprietary tools. These backups can include filters for file type, size, and modification date, making them adaptable to both personal and small office usage. In practice, the storage controls are intuitive and well-implemented for a first-generation NAS platform, with sufficient safeguards for casual users who might otherwise rely on third-party cloud apps.

Application availability has steadily improved since UGREEN’s NAS debut in 2023 (at least, in the ‘west’, as they have been a NAS name in the east since 2020/2021). The App Center now includes a range of first-party utilities such as a file manager, photo station, video station, and music library, as well as third-party options like Plex, Jellyfin, and Docker containers. AI-based features such as face, text, and object recognition are supported thanks to the 6 TOPS NPU in the RK3576, though performance varies depending on workload size. The integrated Vault app provides encrypted storage areas secured by password or downloadable key, which can be auto-locked on reboot for privacy. Meanwhile, the mobile companion app mirrors almost every desktop function, from user and storage administration to Docker control and media playback. Having all management tasks accessible within a single unified mobile app, rather than separate applications for photos or video, demonstrates UGREEN’s streamlined approach to usability, positioning UGOS Pro as a consumer-friendly OS that hides most of the NAS complexity from first-time users. However, I cannot stress enough that this software is still a decent way behind long-established players such as Synology DSM and QNAP QTS in terms of features, maturity and client support. Additionally, as one of the newest names in the world of NAS, the brand has yet to be truly ‘tested’ when it comes to security strength and how they handle/respond to a larger scale security incident. So wheat we find here is good enough for hte price point, but is only a small step or two above what users have come to expect from privately owned NAS nonetheless in 2025/2026.

UGREEN DH2300 NAS Review – Heat, Noise and Power Consumption Tests

Thermal and acoustic performance on the UGREEN DH2300 is generally stable and consistent with expectations for a low-power ARM-based NAS. The system uses a single rear-mounted fan that automatically adjusts its RPM in response to internal temperature sensors, aided by the ventilated top and side panels. During extended operation, the fan demonstrated smooth, gradual speed transitions rather than abrupt cycling, which helped minimize background noise. With two 4TB Seagate IronWolf drives installed, the system recorded approximately 31–32 dBA in idle mode with the fan set to “Low” in UGOS. When switched to “Auto,” and under light file activity, readings rose to 33–35 dBA, while heavier read and write operations increased noise levels to 38–41 dBA. Under maximum fan speed, levels peaked at 44–45 dBA, making the fan audible but still within acceptable limits for a desktop environment. The use of plastic housing reduces the resonance that typically amplifies drive vibration in metal enclosures, although some low-frequency hum remains during heavy disk access.

Temperature readings taken over a 24-hour mixed-use test period show that the chassis maintains good internal thermal balance, aided by vertical airflow and efficient low-wattage components. The NAS was powered down overnight before the test, then reactivated for hourly upload and backup tasks, simulating intermittent real-world usage. During idle periods, the drives stabilized at 35–37°C, while moderate access cycles pushed them to 42°C. The motherboard and surrounding airflow remained at approximately 34–35°C, with rear exhaust temperatures registering slightly higher. Despite the passive nature of some cooling zones, heat accumulation around the CPU remained minimal, peaking around 50–60°C during sustained transfer activity. These figures suggest that UGREEN’s internal airflow design, while basic, is sufficient for continuous operation with standard HDDs. Users in warmer climates or those employing higher-RPM drives might consider increasing fan control sensitivity via UGOS to maintain consistent thermals.

Power consumption results were equally conservative. With two 4TB mechanical drives installed and the system idle at below 5% CPU utilization, the DH2300 drew roughly 9.5W, a competitive figure for a two-bay NAS. During typical data transfers and 50% CPU load, draw increased modestly to 12–13W, remaining far below that of comparable x86-based systems. The external 50W power adapter ensures the NAS operates efficiently while reducing internal heat buildup. Users employing SSDs instead of HDDs could expect overall consumption to drop by an additional 4–5W, further improving energy efficiency. These results confirm the DH2300’s suitability for continuous operation, including 24/7 use as a network backup target or low-impact media server.

Its minimal noise and low thermal footprint make it a non-intrusive addition to a home or small office environment, aligning with its purpose as a budget, always-on NAS solution.

UGREEN DH2300 NAS Review – Verdict and Conclusion

The UGREEN DH2300 represents a carefully positioned step in the company’s ongoing effort to make private storage approachable for non-technical users. Its hardware configuration, led by the Rockchip RK3576 processor and 4GB of fixed memory, provides solid baseline performance for a two-bay ARM-powered NAS at this price point. Although its single 1GbE network port may limit throughput for larger file transfers, the system compensates with a highly efficient power profile, quiet operation, and full support for common RAID configurations. The inclusion of a dedicated 32GB eMMC system drive, HDMI 4K60 output, and an NPU capable of AI-based photo indexing places it above most similarly priced entry-level alternatives from QNAP and Synology. However, certain aspects of UGREEN’s marketing—particularly the way the dual quad-core CPU clusters are presented as a single 8-core design—could be clearer. Likewise, the absence of upgradeable memory or faster networking options limits its long-term scalability for users seeking to expand their NAS environment beyond basic media and backup tasks.

From a broader standpoint, the DH2300’s strongest appeal lies in its simplicity and low operational overhead. UGOS Pro, though still developing in maturity, has evolved into a competent, user-friendly platform offering the key features needed for home data management, multimedia access, and scheduled backups. The OS’s stability, combined with efficient hardware and lightweight design, makes this NAS a practical alternative to annual cloud subscriptions for users who simply want local control over their data. It is not a system aimed at enthusiasts or professionals demanding virtual machines, multi-gig networking, or broad third-party OS support, but rather those seeking a self-contained, reliable, and low-maintenance device. Within that niche, the DH2300 delivers strong value and performs consistently well for the intended demographic—serving as an accessible first step into local storage ownership.

 

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PROs of the UGREEN DH2300 NAS

CONs of the UGREEN DH2300 NAS

Efficient Rockchip RK3576 processor (dual quad-core ARM design) provides strong performance for a low-power NAS. Integrated 6 TOPS NPU enables local AI functions such as face, text, and object recognition without cloud reliance. UGOS Pro offers an intuitive, user-friendly interface with features like RAID management, snapshots, Docker, and backups. Low noise output (31–45 dBA) and excellent power efficiency (9–13W typical use) suit 24/7 home operation. Dedicated 32GB eMMC system drive keeps the OS separate from data volumes for better reliability. HDMI 2.0 4K60 output allows direct media playback and display management. Competitive pricing around $200 makes it a strong entry-level NAS alternative to subscription cloud storage.

Single 1GbE LAN port limits transfer speeds and network scalability. Fixed 4GB memory restricts heavy multitasking or Docker use. Spending just $100-150 more gets you much, much more capable x86 powered systems

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