Synology DiskStation DS1825+
8-bay · AMD Ryzen V1500B · DSM 7.3
Asustor Flashstor 12 Pro Gen2
All-flash · 12× M.2 NVMe · 10 GbE
Synology DiskStation DS1825+ takes it — here’s why.
In our weighted Specdex score, Synology DiskStation DS1825+ lands at 91 and Asustor Flashstor 12 Pro Gen2 at 89. That puts Synology DiskStation DS1825+ ahead by 2 points — a narrow margin driven mostly by its strengths in the categories below.
Pick Synology DiskStation DS1825+ if…
- ✓DSM 7.3 still the best NAS OS
- ✓8 bays + 2× M.2 NVMe cache
- ✓Hot-swap, expansion-ready
Pick Asustor Flashstor 12 Pro Gen2 if…
- ✓12× M.2 NVMe slots
- ✓10 GbE built-in
- ✓Silent — no spinning drives
Score breakdown
Specs side-by-side
| Spec | Synology DiskStation DS1825+ | Asustor Flashstor 12 Pro Gen2 |
|---|---|---|
| CPU | AMD Ryzen V1500B (4 cores, 8 threads) | ▲ Intel Atom x7835RE (8 cores) |
| RAM | 8 GB ECC (expandable to 32) | ▲ 16 GB DDR5 (expandable to 64) |
| Bays | 8× 3.5″ SATA + 2× M.2 NVMe | 12× M.2 NVMe Gen 4 |
| Network | 2.5 GbE × 2 | 10 GbE × 1 + 2.5 GbE × 2 |
| USB | 3× USB 3.2 Gen 2 | 4× USB 3.2 Gen 2 |
Synology DiskStation DS1825+
- +DSM 7.3 still the best NAS OS
- +8 bays + 2× M.2 NVMe cache
- +Hot-swap, expansion-ready
- −Newer Synology drives only on premium tier
- −Premium pricing vs UGREEN
- −Single 2.5 GbE
Asustor Flashstor 12 Pro Gen2
- +12× M.2 NVMe slots
- +10 GbE built-in
- +Silent — no spinning drives
- −NVMe TB-per-dollar still pricey
- −Heat management critical
- −ADM software trails DSM polish
FAQ: Synology DiskStation DS1825+ vs Asustor Flashstor 12 Pro Gen2
Which is better, Synology DiskStation DS1825+ or Asustor Flashstor 12 Pro Gen2? +
Synology DiskStation DS1825+ scores 91 on our weighted rubric — ahead by 2. Your best pick depends on the sub-scores above.
Is Synology DiskStation DS1825+ worth the price? +
At $1,099, Synology DiskStation DS1825+ delivers a Specdex score of 91 — strongest in software.
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.
Does Synology DiskStation DS1825+ or Asustor Flashstor 12 Pro Gen2 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.