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The TerraMaster F2-425 Plus is worth considering if you want a compact NAS that combines two SATA drive bays with three NVMe slots and can make practical use of multi-gigabit networking. Its dual 5GbE ports delivered strong results in IT Pro’s lab, but those figures depended on specific SSDs, a 10GbE test network and an MPIO iSCSI setup—not a typical home network. At the dated UK review price of £399 including VAT in February 2026, its appeal is strongest for home labs, creators and small offices that will use its extra storage and networking flexibility.
What the F2-425 Plus offers
Launched on October 21, 2025, the F2-425 Plus is a desktop NAS built around an Intel N150 quad-core processor, 8GB of DDR5 memory and two 5GbE network ports. It has two SATA bays for 3.5-inch hard drives or 2.5-inch SSDs, plus three internal M.2 2280 PCIe Gen3 x1 NVMe slots. TerraMaster specifies a maximum of 60TB raw capacity across the SATA bays, based on two 30TB drives; usable capacity depends on the drives and RAID configuration.
| Specification | F2-425 Plus |
|---|---|
| Processor | Intel N150 quad-core; up to 3.6GHz burst frequency (TerraMaster, 2025) |
| Memory | 8GB DDR5 installed; up to 32GB supported (TerraMaster, 2025; IT Pro, 2026) |
| Drive expansion | Two SATA LFF/SFF bays and three M.2 2280 PCIe Gen3 x1 NVMe slots |
| Networking | Two 5GbE ports |
| Other connections | HDMI 2.0, USB-C and three USB-A ports |
| Power supply | 48W external adapter |
TerraMaster’s stated 60TB is raw SATA capacity, not a promise of that much space for files. RAID and other storage choices affect usable capacity. The three NVMe slots add room for SSD-based storage or acceleration alongside the SATA drives, but the source material does not establish a single required or best configuration for those drives.
How fast is it over 5GbE?
In IT Pro’s 2026 lab review, an SSD NAS share reached sequential reads of 4.6Gbit/s and writes of 3.9Gbit/s on a 10GbE lab network. A separate dual-5GbE MPIO iSCSI test reached 7Gbit/s reads and 5.1Gbit/s writes. These are results from specific storage, host, switch, network and protocol combinations—not guaranteed speeds for a home setup. The iSCSI result in particular comes from a multi-path configuration and should not be treated as the expected speed of one ordinary client copying files to a share.
#1 Best Overall
- Powerful 2-Bay NAS with Triple M.2 Expansion & Premium Build: Powered by the Intel N95 Quad-Core CPU (up to 3.4GHz) and 8GB memory, the F2-425 Plus NAS delivers high-efficiency performance for demanding users. Its innovative triple M.2 SSD design supports SSD cache or independent storage pools. All housed in a durable aluminum-alloy chassis with tool-less Push-Lock HDD trays for easy drive installation and long-term reliability.
- Meet TOS 7 – The First AI-Native NAS Operating System, with OpenClaw AI Agent ready to download from the App Center. This 2-bay NAS breaks free from traditional complexity, delivering a fundamental shift from a passive NAS enclosure to an active AI-powered assistant. OpenClaw's natural language interface lets you command your NAS in plain language — no CLI, no menus, no learning curve. TOS 7's one-stop AI platform orchestrates intelligent workflows across storage, backup, and media; while predictive management proactively handles data protection, semantic search, and smart organization. Just tell TOS 7 what you need — it understands, executes, and adapts.
- Dual 5GbE LAN Ports up to 1020MB/s: Featuring dual 5GbE network interfaces, the F2-425 Plus network attached storage supports link aggregation and SMB Multichannel, achieving up to 1020 MB/s sequential read/write speeds. Ideal for video editors, creative teams, and small business offices that require fast and reliable data access.
- Massive 84TB Storage with TRAID Protection & Data Drive Mounting: The F2-425 Plus NAS server supports up to 84TB total capacity (2× HDD + 3× M.2 SSD). TerraMaster's exclusive TRAID technology optimizes capacity while providing strong data protection. Plus, easily integrate your existing storage: first install TOS 7 on a new drive, then hot-plug your existing data drive for instant access without formatting – keeping all your files secure and untouched. Housed in a durable aluminum-alloy chassis, the F2-425 Plus is built to last.
- All-in-One Hub for Pros, Businesses & Home Users: From geeks running Docker, Virtual Machines, and Portainer, to small businesses leveraging TerraMaster BBS (Business Backup Suite), and families enjoying Plex/Emby/Jellyfin with 4K/8K transcoding – the F2-425 Plus NAS server fulfills diverse needs. Integrated apps like QB/Torrent/Transmission simplify downloads, while TNAS Mobile enables full remote control.
What you need to benefit from the network ports
- A client device and network path capable of multi-gigabit speeds; a 1GbE link limits transfers well below the NAS ports’ 5GbE link rate.
- A suitable multi-gigabit switch or direct network arrangement. The switch, client interfaces and cabling all contribute to the end-to-end result.
- For an MPIO iSCSI setup like IT Pro’s test, compatible host and network configuration in addition to the NAS. The review’s result does not establish the performance of every MPIO setup.
TerraMaster advertises sequential write speeds up to 1020MB/s. That is the manufacturer’s product-page claim, not the same measurement as IT Pro’s protocol-specific lab results; actual throughput depends on the complete storage and network configuration.
Can you use NVMe SSDs and hard drives together?
Yes. The design combines two SATA bays with three internal M.2 2280 PCIe Gen3 x1 NVMe slots, so SATA drives and NVMe SSDs can be installed in the same appliance. IT Pro tested with two Kingston M.2 NVMe SSDs and two 4TB Seagate IronWolf NAS hard drives, measuring the SSD NAS share separately from the dual-5GbE MPIO iSCSI target.
Rank #2
- Powerful 2-Bay NAS with Triple M.2 Expansion: Powered by the Intel N150 Quad-Core CPU (up to 3.6GHz) and 8GB DDR5 memory (non-ECC SODIMM), the F2-425 Plus NAS server delivers high-efficiency performance for demanding users. Its innovative triple M.2 SSD design supports SSD cache or independent storage pools, providing outstanding flexibility and acceleration for data-heavy tasks.
- Meet TOS 7 – The First AI-Native NAS Operating System, with OpenClaw AI Agent ready to download from the App Center. This 2-bay NAS breaks free from traditional complexity, delivering a fundamental shift from a passive NAS enclosure to an active AI-powered assistant. OpenClaw's natural language interface lets you command your NAS in plain language — no CLI, no menus, no learning curve. TOS 7's one-stop AI platform orchestrates intelligent workflows across storage, backup, and media; while predictive management proactively handles data protection, semantic search, and smart organization. Just tell TOS 7 what you need — it understands, executes, and adapts.
- Dual 5GbE LAN Ports up to 1020MB/s: Featuring dual 5GbE network interfaces, the F2-425 Plus network attached storage supports link aggregation and SMB Multichannel, achieving up to 1020 MB/s sequential read/write speeds. Ideal for video editors, creative teams, and small business offices that require fast and reliable data access.
- Massive 84TB Storage with TRAID Protection & Data Drive Mounting: The F2-425 Plus NAS server supports up to 84TB total capacity (2× HDD + 3× M.2 SSD). TerraMaster's exclusive TRAID technology optimizes capacity while providing strong data protection. Plus, easily integrate your existing storage: first install TOS 7 on a new drive, then hot-plug your existing data drive for instant access without formatting – keeping all your files secure and untouched. Housed in a durable aluminum-alloy chassis, the F2-425 Plus is built to last.
- All-in-One Hub for Pros, Businesses & Home Users: From geeks running Docker, Virtual Machines, and Portainer, to small businesses leveraging TerraMaster BBS (Business Backup Suite), and families enjoying Plex/Emby/Jellyfin with 4K/8K transcoding – the F2-425 Plus NAS server fulfills diverse needs. Integrated apps like QB/Torrent/Transmission simplify downloads, while TNAS Mobile enables full remote control.
Choosing drives
- For bulk storage: the SATA bays accept 3.5-inch hard drives or 2.5-inch SSDs. IT Pro found the tool-free SATA carriers suitable for either size.
- For NVMe: the slots take M.2 2280 PCIe Gen3 x1 drives. The N150 exposes PCIe Gen3 channels, so buying a more expensive Gen4 drive is unnecessary for the slot’s supported generation.
- For total capacity: TerraMaster lists up to 60TB raw across the two SATA bays, assuming two 30TB drives. RAID configuration changes the space available for data.
The review describes the drives it used for testing; it does not establish retailer bundle contents. Check the specific listing to see whether drives are included.
Memory, build and day-to-day fit
The system ships with 8GB DDR5 and supports up to 32GB, according to TerraMaster and IT Pro. There is one SO-DIMM slot, so an upgrade replaces the installed module rather than adding a second one. This is less convenient than a two-slot design for incremental upgrades.
Rank #3
- Powerful Performance: Equipped with an Intel x86 quad-core processor and 4GB RAM, the F2-425 network attached storage effortlessly handles 4K transcoding and multitasking. The 2.5GbE port ensures ultra-fast file transfers and supports multi-user concurrent access
- Home Multimedia Hub: The F2-425 media server supports hardware-level 4K H.265 decoding, compatible with Plex, Emby, and Jellyfin for smooth HD video playback, with DLNA for seamless multi-device streaming. The Photos app features AI smart album and efficiently organizes millions of photos
- TNAS Mobile Full Control: Initialize setup for your F2-425 NAS storage via the TNAS Mobile app without a PC. The mobile app supports automatic photo and video backups, plus real-time local/remote synchronization, all managed through a single client
- Ultra-Quiet & User-Friendly: The F2-425 NAS server operates at just 19dB(A), suitable for quiet environments like bedrooms. Its tool-free Push-Lock design HDD trays enable to install HDDs in 10 seconds
- Massive Storage & Security: The F2-425 2-bay NAS supports up to 60TB storage (2 x 30TB for each bay), 50+ independent user accounts, and flexible TRAID arrays, saving 30% more storage space than traditional RAID while ensuring data redundancy. SPC security module and CloudSync (supporting Google Drive, OneDrive, Dropbox) guarantee worry-free data protection. Additionally, TerraSync enables two-way sync between the F2-425 and PCs/Macs
Reviewer Dave Mitchell described the 3mm aluminium shell as solid and the single 8cm fan as very quiet. The NAS also has HDMI 2.0 and USB-C alongside three USB-A ports. These physical features add flexibility, though the supplied review does not quantify power consumption or noise levels.
What software and data-protection tools does it have?
IT Pro reviewed TOS 6 and documented Rsync, snapshots for NAS shares and iSCSI LUNs, TerraMaster Folder Mirror, CloudSync with support for fifteen cloud providers, and centralized backup for Windows, VMware and Hyper-V. It also lists HyperLock-WORM retention modes. These features give the appliance options for replication, recovery and retention, but they do not replace a separate backup strategy: snapshots and mirrored folders can still be affected by problems that reach the NAS or its storage.
Rank #4
- Unleash Ultimate Performance: The F4 SSD is a full-SSD NAS server with a high-performance solution powered by an N95 4-core, 4-thread processor with a turbo frequency of up to 3.4GHz. Equipped with UHD Graphics, 8GB DDR5-4800MHz memory, and a 5Gbps Ethernet port (5x faster than standard 1Gbps), it delivers professional-grade performance for both small businesses and home users.
- A Palm-Sized 4 Bay NAS for Versatile Storage: The F4 SSD NAS storage features an ultra-compact, lightweight design, about the size of a paperback book. Its small footprint allows for easy placement on desks, shelves, or in tight spaces like under stairs. Weighing no more than two cell phones, it’s the perfect portable NAS solution, offering efficient storage wherever you go. The F4 SSD support four M.2 2280 NVMe SSDs, with each one up to 8TB and total capacity of 32TB. With a tool-free design, SSD installation or memory expansion can be completed in 2 minutes.
- Whisper-Quiet Performance for a Peaceful Environment: The F4 SSD network attached storage offers top-tier performance with minimal noise, thanks to its SSD-based storage. Its advanced cooling system, featuring convection design on each SSD, keeps temperatures low while silent fans ensure quiet operation. Even under heavy use, the F4 SSD remains nearly silent, with standby noise levels below 19dB. Compact and unobtrusive, it seamlessly fits into any home, delivering an ultra-quiet experience.
- Innovative heat dissipation method ensures stable and efficient SSD performance: With an innovative active cooling design and silent fans, the F4 SSD cloud storage maintains optimal performance and stability, even during peak workloads.
- Comprehensive Business Backup Solution: The F4 SSD NAS comes with TerraMaster Business Backup Suite (BBS) which is an enterprise-grade solution that includes Centralized Backup for data consolidation, TerraSync for server and PC synchronization, Duple Backup for off-site recovery, CloudSync for cloud recovery, and Snapshot for ransomware protection. BBS offers flexible, high-performance backup strategies tailored for small and medium-sized businesses.
At the time of the February 2026 review, TOS 7 was a public beta, not the reviewed stable software. IT Pro previewed 82 apps in its beta App Center, compared with 57 downloadable apps in the TOS 6 App Center it reviewed. TOS 7’s previewed changes included redesigned management screens, more granular ACLs, Storage Manager and Device Monitoring apps, and an Online Office viewer. Treat those beta features and app counts as time-specific rather than a statement of current release availability.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How does it compare with the Synology DS725+?
IT Pro used the Synology DS725+ as a comparison point in its February 2026 review. The cited UK prices and hardware figures are review-time details, not current market quotes.
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- Powerful 4-Bay NAS with Triple M.2 Expansion & Premium Build: Powered by the Intel N95 Quad-Core CPU (up to 3.4GHz) and 8GB memory, the F4-425 Plus NAS delivers high-efficiency performance for demanding users. Its innovative triple M.2 SSD design supports SSD cache or independent storage pools. All housed in a durable aluminum-alloy chassis with tool-less Push-Lock HDD trays for easy drive installation and long-term reliability.
- Meet TOS 7 – The First AI-Native NAS Operating System, with OpenClaw AI Agent ready to download from the App Center. This 4-bay NAS breaks free from traditional complexity, delivering a fundamental shift from a passive NAS enclosure to an active AI-powered assistant. OpenClaw's natural language interface lets you command your NAS in plain language — no CLI, no menus, no learning curve. TOS 7's one-stop AI platform orchestrates intelligent workflows across storage, backup, and media; while predictive management proactively handles data protection, semantic search, and smart organization. Just tell TOS 7 what you need — it understands, executes, and adapts.
- 4K Multimedia Server for the Whole Family: With hardware 4K decoding and native support for Plex, Emby, and Jellyfin, this multimedia server streams your media library to smart TVs, phones, tablets, and streaming sticks. The TerraMaster Photos app automatically organizes family memories with AI-powered smart categorization.
- Dual 5GbE LAN Ports up to 1020MB/s: Featuring dual 5GbE network interfaces, the F4-425 Plus network attached storage supports link aggregation and SMB Multichannel, achieving up to 1020 MB/s sequential read/write speeds. Ideal for video editors, creative teams, and small business offices that require fast and reliable data access.
- Massive 152TB Storage with TRAID Protection & Data Drive Mounting: The F4-425 Plus NAS server supports up to 152TB total capacity (4× HDD + 3× M.2 SSD). TerraMaster's exclusive TRAID technology optimizes capacity while providing strong data protection. Plus, easily integrate your existing storage: first install TOS 7 on a new drive, then hot-plug your existing data drive for instant access without formatting – keeping all your files secure and untouched. Housed in a durable aluminum-alloy chassis, the F4-425 Plus is built to last.
| Feature | TerraMaster F2-425 Plus | Synology DS725+ |
|---|---|---|
| Price cited by IT Pro (UK, February 2026) | £399 including VAT | About £443 |
| Memory | 8GB DDR5 installed; up to 32GB supported | 4GB DDR4 |
| M.2 slots | Three M.2 2280 PCIe Gen3 x1 | Two |
| Network port speed | Two 5GbE ports | One 2.5GbE port |
On those cited specifications, TerraMaster offers more installed memory, more M.2 slots and faster network ports. That is not a complete comparison of the systems: the reviewed material does not establish equivalent software capabilities, warranties, drive bundle contents, noise, power use or total system cost. If operating-system maturity matters more than hardware flexibility, weigh the software ecosystem separately rather than assuming port count settles the choice.
Who should buy the F2-425 Plus?
- Good fit: a home lab, creator workstation or small office that wants HDD capacity and NVMe options in one compact chassis and can use multi-gigabit networking.
- Less compelling: a buyer whose network is limited to 1GbE and who would not use the extra port speed, or someone who specifically wants two replaceable memory modules.
- Compare carefully: anyone prioritizing the most mature NAS operating-system ecosystem, or calculating total cost. Drives and a suitable multi-gigabit switch may be needed to make the hardware’s capacity and networking useful; confirm what is included with the particular listing.
IT Pro listed £399 including VAT in the UK in February 2026. That is a dated review price, not a universal or current price; check local availability and current retailer listings before comparing costs.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
