TerraMaster F4-425 Pro 4-Bay NAS Review — Is It Worth It? [2026]

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TerraMaster F4-425 Pro NAS Review [2026]
In-Depth Review · 2026

TerraMaster F4-425 Pro Performance 4-Bay NAS

The top of the F4-425 range: an Intel N305 or N350 CPU, up to 16GB of DDR5, dual 5GbE and three NVMe slots, aimed at Docker, transcoding and creative workflows.

★★★★★ 5.0/5 · only 3 reviews on the product page so far
$594.99 $699.99
TerraMaster F4-425 Pro 4-bay NAS
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N305 / N350
Intel CPU Options
16GB
DDR5 (N350 spec)
2 x 5GbE
Network Ports
3 x NVMe
M.2 2280 Slots
Quick Verdict

Is the TerraMaster F4-425 Pro worth buying?

If you plan to run Docker containers, do 4K transcoding for multiple users or keep VMs on NVMe, the Pro gives you the headroom the cheaper models do not. The entry N305 option is $594.99, and the faster N350 option runs from $679.99 to $799.99 depending on color. For plain storage and backups it is overkill, and with only three reviews all we can say is that the early feedback is positive.

Great forPower users, home labbers and small teams who want a strong CPU and 16GB of DDR5 in a compact four-bay NAS.
Reconsider ifYou mostly store files and stream media. The F4-425 Plus has the same networking and M.2 slots for less money.
Overview

A four-bay NAS built for heavier workloads

The Pro comes in Gunmetal Grey or Silver, with an Intel N305 (8GB) or N350 (16GB) processor. The product page lists the N350 as a 7 W part and pairs it with 16GB of DDR5, expandable to 32GB. Connectivity is two 5GbE ports and four USB 3.2 Gen 2 ports at 10 Gbps, plus HDMI. TerraMaster pitches it with TOS 7, which it describes as an AI-native operating system.

TerraMaster F4-425 Pro NAS overview photo
Key Features

What makes it stand out

01 · CPU and RAM

N305 or N350, up to 16GB DDR5

The variant matters: N305 ships with 8GB and N350 with 16GB, in a single SODIMM slot with a 32GB maximum. If you want to run Docker stacks, the 16GB N350 is the version worth paying for.

Internals of the TerraMaster F4-425 Pro
02 · Storage

4 SATA bays and 3 NVMe slots

Four 3.5/2.5-inch SATA bays take up to 30TB per drive (120TB total), and three M.2 2280 NVMe slots (PCIe 3.0) handle cache or fast pools. One early reviewer runs two HDDs in RAID, an extra HDD, one NVMe for the system and apps and a second NVMe for cache.

Drive bays and NVMe slots on the F4-425 Pro
03 · Networking

Dual 5GbE and 10 Gbps USB

Two 5GbE RJ-45 ports and four 10 Gbps USB 3.2 ports mean you will not run out of bandwidth or expansion. The page also lists media certification and a 2-year warranty with 24/7 support.

Ports on the TerraMaster F4-425 Pro
Specifications

Full spec sheet

TerraMaster F4-425 Pro 4-Bay NAS
ProcessorIntel N305 or N350 (variant dependent)
MemoryN305: 8GB / N350: 16GB, single SODIMM slot, max 32GB
Drive bays4 x 3.5"/2.5" SATA (30TB max each)
M.2 slots3 x M.2 2280 NVMe (PCIe 3.0)
Max raw capacity120TB (SATA bays)
Network2 x 5GbE RJ-45
USB3 x USB-A + 1 x USB-C, all USB 3.2 Gen 2 (10 Gbps)
Video out1 x HDMI
Size (H x W x D)150 x 181 x 219 mm
Weight2.9 kg net
Noise20.9 dB(A), 4 drives standby
Power supply90 W
Warranty2 years
The Balance

Pros & Cons

Pros

  • Intel N350 with 16GB DDR5 option in a compact body
  • Three NVMe slots plus four SATA bays
  • Dual 5GbE and four 10 Gbps USB ports
  • Drive migration keeps your data when moving disks over
  • Available in two colors

Cons

  • Starts at $594.99 and reaches $799.99 for the N350 in Gunmetal Grey
  • Only 3 reviews on the page, all short and early
  • Overkill for simple file storage
  • CPU and RAM depend on the variant, so read the option carefully
  • Noise is rated with drives in standby
FAQ

Answers before you buy

Which variant should I choose?
For Docker or heavier transcoding, the N350 with 16GB is the one to get. The N305 with 8GB is fine for lighter use at a lower price.
Can I keep my existing drives?
Yes. TerraMaster's FAQ on the page says TOS supports direct disk migration, and data stays intact.
How does it differ from the F4-425 Plus?
The Pro uses a stronger N305 or N350 CPU with more RAM. Both have dual 5GbE and three M.2 slots.
What is TOS 7?
TerraMaster's latest operating system, which the page markets as AI-native with natural language control and 500+ RESTful APIs. Treat the AI positioning as marketing until you try it.
How many reviews does it have?
Three, all five-star. Nice, but too few to prove long-term reliability.
4.3/5
Overall Score

Great hardware, priced for people who need it

The F4-425 Pro is a strong, compact four-bay NAS, and the N350 version is the one to buy if you want real headroom. If you do not need that, save money with the Plus.

This page contains affiliate links. Teelacodes may earn a commission when you click through and complete a qualifying purchase, at no extra cost to you. Read the full disclosure policy. Prices, stock and promotion terms can change without notice — always confirm the final total and availability on terra-master.com before ordering.

Last updated: September 30, 2026 · Reviewed by the Teelacodes Editorial Team.

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