Asustor Drivestor 4 Pro Gen2
- CPU
- Realtek RTD1619B
- RAM
- 2 GB max 2 GB
- Network
- 1 × 2.5GbE
- M.2 / PCIe
- 0 / –
Model AS3304T v2
Should you buy the Asustor Drivestor 4 Pro Gen2?
Fill all 4 bays in RAID 5 and you keep 75% of the raw space, losing one drive's worth to parity. (Still not a backup, though.)
Watch out for
The ARM chip is the catch. Plenty of apps run fine on it, but check yours first. No 10GbE, and Asustor doesn't list a PCIe slot to add it. The 2 GB RAM ceiling is tight. Keep it to file sharing and a few light containers.
You can grow it to 16 bays with Asustor's expansion units.
Usable space with 4 matching drives
These are decimal TB, the way drive boxes count them, and Windows will show roughly 9% less. Got a mix of sizes? Put your own drives in the calculator and it'll work out the layers.
| Each drive | RAID 5 (1 parity) | RAID 6 (2 parity) |
|---|---|---|
| 4 TB × 4 | 12 TB ≈ 10.9 TiB | 8 TB ≈ 7.3 TiB |
| 8 TB × 4 | 24 TB ≈ 21.8 TiB | 16 TB ≈ 14.6 TiB |
| 12 TB × 4 | 36 TB ≈ 32.7 TiB | 24 TB ≈ 21.8 TiB |
| 16 TB × 4 | 48 TB ≈ 43.7 TiB | 32 TB ≈ 29.1 TiB |
| 20 TB × 4 | 60 TB ≈ 54.6 TiB | 40 TB ≈ 36.4 TiB |
| 24 TB × 4 | 72 TB ≈ 65.5 TiB | 48 TB ≈ 43.7 TiB |
Specifications
Taken from Asustor's own spec page, and "Not published" means they don't list it.
Sources: asustor.com
Asustor Drivestor 4 Pro Gen24-bay NAS