Head-to-head · Best 4-Bay NAS Drives

Asustor Lockerstor 4 Gen3 (AS6804T) vs Synology DS923+

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

The short answer

Synology DS923+ comes out ahead by a narrow margin (4.4 vs 4.6). The gap is mostly about households and prosumers who want the least-friction NAS experience and value mature software over raw hardware spec — read the strengths below before deciding.

Ranked #5 in Best 4-Bay NAS Drives

Asustor Lockerstor 4 Gen3 (AS6804T)

4.4

$1,299

The Lockerstor 4 Gen3 is the premium pick — Ryzen V3C14 CPU, ECC DDR5, dual 10 GbE + dual 5 GbE, and four M.2 NVMe slots. It's a different price tier than the rest of this lineup, but if you're building a small-business backup target or a prosumer Plex+everything box, the networking and CPU headroom matter. TechRadar's only real criticism is the price; the hardware is unambiguously top-tier in this segment.

Strengths

— AMD Ryzen V3C14 quad-core with ECC DDR5 RAM — enterprise-grade memory protection
— Dual 5 GbE + Dual 10 GbE ports stock — fastest networking in this round-up
— Four M.2 NVMe slots — most flexible caching/storage tier setup here

Watch-outs

— $1,299 puts it at 2x the Synology DS923+ price tier
— ADM still trails DSM and QTS in polish and third-party app catalog
— Overkill for households or small office use — this is a prosumer/SMB tier

$1,299 · Check Price on Amazon Full review →

Higher ratedRanked #1 in Best 4-Bay NAS Drives

Synology DS923+

4.6

$599

The DS923+ is the default 4-bay NAS recommendation for most users, and has been since launch — DSM is the most polished OS in this space, ECC RAM support is unusual at this price, and the platform handles continuous backups, media serving, and a few virtual machines without breaking a sweat. The two main limitations — gigabit-only stock networking and no native hardware transcoding — push power users to the QNAP TS-464. Everyone else gets the easier path with the Synology.

Strengths

— AMD Ryzen R1600 dual-core CPU with ECC memory support — rare protection against silent data corruption
— DSM (DiskStation Manager) is the most polished NAS operating system available
— Two M.2 NVMe slots for read/write caching (or storage pools on DSM 7.2+)

Watch-outs

— Ships with only 2x 1 GbE ports — 2.5 GbE is becoming standard at this price tier
— Synology's drive-compatibility list pushes you toward their branded HAT3300 drives
— Hardware video transcoding requires a Plex Pass workaround — no iGPU like QNAP

$599 · Check Price on Amazon Full review →

How they stack up

Asustor Lockerstor 4 Gen3 (AS6804T)

Most expensive pick here — 2x the Synology DS923+ and TerraMaster F4-424 Pro, but the only one with both 5 GbE and 10 GbE networking. ADM is more capable than UGREEN's UGOS Pro and TerraMaster's TOS but still trails DSM and QTS. The QNAP TS-464's iGPU transcoding is the one feature you give up versus the Lockerstor — its server-grade Ryzen lacks an iGPU.

Synology DS923+

DSM is materially more polished than QNAP's QTS, Asustor's ADM, UGREEN's UGOS, and TerraMaster's TOS. Loses on raw spec to the QNAP TS-464 (4K transcoding, 2.5 GbE stock), the UGREEN DXP4800 Plus (10 GbE stock), the TerraMaster F4-424 Pro (8-core CPU), and the Asustor Lockerstor 4 Gen3 (5/10 GbE dual). The software gap closes the hardware gap for most non-power-user buyers.

Specs side-by-side

Spec	Asustor Lockerstor 4 Gen3 (AS6804T)	Synology DS923+
Bays	4 (3.5" / 2.5" SATA)	4 (3.5" / 2.5" SATA)
CPU	AMD Ryzen V3C14 (4-core, 3.8 GHz)	AMD Ryzen R1600 (2-core, 2.6-3.1 GHz)
RAM	16 GB DDR5 ECC	4 GB DDR4 ECC (up to 32 GB)
Networking	2x 5 GbE + 2x 10 GbE	2x 1 GbE (optional 10 GbE)
Chassis	Aluminum	—
OS	ADM (Asustor Data Master)	DSM (DiskStation Manager)
M.2 NVMe Slots	4x slots	2x slots
Video Output	HDMI 2.1	—
Max Sequential Read	—	625 MB/s
Expansion	—	Gen3 x2 network upgrade slot (eSATA)

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