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Asustor Flashstor 12 Pro Gen2 — All-flash · 12× M.2 NVMe · 10 GbE
Asustor

Asustor Flashstor 12 Pro Gen2

All-flash · 12× M.2 NVMe · 10 GbE

89
/ 100
From $1,599
VS
Synology DiskStation DS1825+ wins by 2
Synology DiskStation DS1825+ — 8-bay · AMD Ryzen V1500B · DSM 7.3
Synology

Synology DiskStation DS1825+

8-bay · AMD Ryzen V1500B · DSM 7.3

91
/ 100
From $1,099
Specdex verdict

Synology DiskStation DS1825+ takes it — here’s why.

In our weighted Specdex score, Asustor Flashstor 12 Pro Gen2 lands at 89 and Synology DiskStation DS1825+ at 91. That puts Synology DiskStation DS1825+ ahead by 2 points — a narrow margin driven mostly by its strengths in the categories below.

Pick Asustor Flashstor 12 Pro Gen2 if…

  • 12× M.2 NVMe slots
  • 10 GbE built-in
  • Silent — no spinning drives

Pick Synology DiskStation DS1825+ if…

  • DSM 7.3 still the best NAS OS
  • 8 bays + 2× M.2 NVMe cache
  • Hot-swap, expansion-ready
Asustor Flashstor 12 Pro Gen2 89
vs
91 Synology DiskStation DS1825+

Score breakdown

Asustor Flashstor 12 Pro Gen2
89
hardware 96
software 80
value 86
ease 84
Synology DiskStation DS1825+
91
hardware 88
software 100
value 84
ease 92

Specs side-by-side

Asustor Flashstor 12 Pro Gen2 versus Synology DiskStation DS1825+ — full spec comparison
Spec Asustor Flashstor 12 Pro Gen2 Synology DiskStation DS1825+
CPU
Intel Atom x7835RE (8 cores)
AMD Ryzen V1500B (4 cores, 8 threads)
RAM
16 GB DDR5 (expandable to 64)
8 GB ECC (expandable to 32)
Bays
12× M.2 NVMe Gen 4
8× 3.5″ SATA + 2× M.2 NVMe
Network
10 GbE × 1 + 2.5 GbE × 2
2.5 GbE × 2
USB
4× USB 3.2 Gen 2
3× USB 3.2 Gen 2

Asustor Flashstor 12 Pro Gen2

Pros
  • +12× M.2 NVMe slots
  • +10 GbE built-in
  • +Silent — no spinning drives
Cons
  • NVMe TB-per-dollar still pricey
  • Heat management critical
  • ADM software trails DSM polish

Synology DiskStation DS1825+

Pros
  • +DSM 7.3 still the best NAS OS
  • +8 bays + 2× M.2 NVMe cache
  • +Hot-swap, expansion-ready
Cons
  • Newer Synology drives only on premium tier
  • Premium pricing vs UGREEN
  • Single 2.5 GbE

FAQ: Asustor Flashstor 12 Pro Gen2 vs Synology DiskStation DS1825+

Which is better, Asustor Flashstor 12 Pro Gen2 or Synology DiskStation DS1825+? +

Synology DiskStation DS1825+ scores 91 on our weighted rubric — ahead by 2. Your best pick depends on the sub-scores above.

Is Asustor Flashstor 12 Pro Gen2 worth the price? +

At $1,599, Asustor Flashstor 12 Pro Gen2 delivers a Specdex score of 89 — strongest in hardware.

Is Synology DiskStation DS1825+ worth the price? +

At $1,099, Synology DiskStation DS1825+ delivers a Specdex score of 91 — strongest in software.

Does Asustor Flashstor 12 Pro Gen2 or Synology DiskStation DS1825+ last longer? +

Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.