Synology DS725+
- CPU
- AMD Ryzen R1600
- RAM
- 4 GB max 32 GB
- Network
- 1 × 2.5GbE, 1 × 1GbE
- M.2 / PCIe
- 2 / –
Model DS725+
Who the Synology DS725+ is for
It's built for a mirror, two drives that each hold a full copy, and you can lose either one. The chip is an AMD Ryzen R1600. You can take it up to 32 GB of RAM (ECC, too) if you want to run VMs on it later.
Watch out for
If you need 10GbE, this isn't the box, as Synology lists no way to add it. A mirror costs you half the raw space, and with two bays the only way to grow is bigger drives.
Two M.2 slots too, and Synology's expansion units take it up to 7 bays when you run out of room.
Usable space with 2 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 | Mirror (SHR or RAID 1) |
|---|---|
| 4 TB × 2 | 4 TB ≈ 3.6 TiB |
| 8 TB × 2 | 8 TB ≈ 7.3 TiB |
| 12 TB × 2 | 12 TB ≈ 10.9 TiB |
| 16 TB × 2 | 16 TB ≈ 14.6 TiB |
| 20 TB × 2 | 20 TB ≈ 18.2 TiB |
| 24 TB × 2 | 24 TB ≈ 21.8 TiB |
Specifications
Taken from Synology's own spec page, and "Not published" means they don't list it.
Sources: synology.com
Synology DS725+2-bay NAS