Head-to-head · Best 4-Bay NAS Drives

Asustor Lockerstor 4 Gen3 (AS6804T) vs TerraMaster F4-424 Pro

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

TerraMaster F4-424 Pro comes out ahead by a narrow margin (4.3 vs 4.2). TerraMaster F4-424 Pro is best for: Media-server and VM users who want maximum CPU power in a 4-bay and can tolerate less mature software. Read the strengths below before deciding.

Ranked #3 in Best 4-Bay NAS Drives

Asustor Lockerstor 4 Gen3 (AS6804T)

4.2

3 sources$1,517.99as of Oct 11

The Asustor Lockerstor 4 Gen3 (AS6804T) is the no-compromise power-user pick, with an AMD Ryzen V3C14, ECC DDR5, dual 10GbE plus dual 5GbE, USB4, and four M.2 slots. TechRadar measured 3.1–3.5 GB/s using both 10GbE ports and USB4 together. The catch is the $1,299 diskless price, which TechRadar called a tough pill when capable 4-bays cost around $800 less.

Strengths

— Dual 10GbE plus dual 5GbE ports for up to 30GbE of bandwidth
— Two USB4 Type-C ports at up to 40Gbps for Thunderbolt storage
— Four M.2 NVMe slots for cache or an all-flash pool

Watch-outs

— Total cost climbs fast once you add drives and SSDs
— Overkill for typical home file-storage and backup needs
— Expansion units add further significant cost

$1,517.99 · Check Price on Amazon Full review →

Higher ratedRanked #2 in Best 4-Bay NAS Drives

TerraMaster F4-424 Pro

4.3

3 sources$730.99as of Oct 11

The TerraMaster F4-424 Pro is the CPU heavyweight of the media-class 4-bays, built around an 8-core Intel Core i3-N300 with 32GB of DDR5 standard and dual 2.5GbE. Neowin called it the most powerful media-class 4-bay on the market. The trade-offs are TerraMaster's still-maturing TOS software and some build quirks like weak internal airflow and non-locking drive trays.

Strengths

— 32GB DDR5 memory standard for VMs and containers
— Dual 2.5GbE ports with link aggregation to 5Gbps
— Often the cheapest way to get this much CPU in a 4-bay

Watch-outs

— TOS software still feels unpolished next to DSM or QTS
— Drive trays do not lock, so a drive can be pulled from a running system

$730.99 · Check Price on Amazon Full review →

How they stack up

Asustor Lockerstor 4 Gen3 (AS6804T)

The Lockerstor 4 Gen3 is the performance king, with a stronger CPU and far more networking (dual 10GbE + dual 5GbE) than the UGREEN NASync DXP4800 Plus, Synology DS923+, QNAP TS-464 or TerraMaster F4-424 Pro. Its price is also more than double theirs, so it only makes sense when you genuinely need the throughput.

TerraMaster F4-424 Pro

The F4-424 Pro has the strongest CPU of the 2.5GbE-class units, beating the QNAP TS-464's Celeron and the Synology DS923+'s AMD chip, and matches the QNAP on dual 2.5GbE. But it lacks the 10GbE of the UGREEN NASync DXP4800 Plus and Asustor Lockerstor 4 Gen3, and its TOS software trails all of them on polish.

Specs side-by-side

Spec	Asustor Lockerstor 4 Gen3 (AS6804T)	TerraMaster F4-424 Pro
Bays	4	4
CPU	AMD Ryzen V3C14 with ECC support	Intel Core i3-N300 8-core, up to 3.8 GHz
RAM	16GB DDR5-4800 ECC (max 64GB)	32GB DDR5 4800MHz
Network	2x 10GbE + 2x 5GbE	2x 2.5GbE (LAG to 5Gbps)
NVMe	4x M.2 slots	2x M.2 2280 (PCIe 3.0)
USB	2x USB4 Type-C (40Gbps)	—
OS	Asustor ADM	TerraMaster TOS
Ports	3x USB-A 3.2 Gen 2	2x USB 3.2 Gen2 10Gbps
Max Raw Capacity	—	88TB (4x 22TB)
Dimensions	—	8.64"D x 7.05"W x 6.06"H
Material	—	Metal

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