Side-by-side specifications of the Synology RS1626xs+ and RS2211RP+, from official datasheets. Differences are highlighted.
| RS1626xs+ | RS2211RP+ | |
| CPU | Intel Xeon D-1726 | Dual Core 1.8 GHz |
| Cores / threads | 6/12 | 2 |
| RAM (base) | 16 GB | 1 GB |
| RAM (max) | 64 GB | 2 GB |
| Drive bays | 4 | 10 |
| Expandable to | 16 | 22 |
| M.2 slots | 2 | 0 |
| Network | 2x 10GbE + 1 OOB | 2x Gigabit |
| 10GbE | yes | no |
| Max raw capacity | 1 PB | 30 TB |
| Hot-swap | yes | yes |
| Form factor | 1U | 2U rackmount |
| Released | 2026 | 2011 |
Pick the RS1626xs+ if you want a much newer Xeon-class CPU, 8 GB RAM standard with a far higher ceiling, 6 bays plus expansion, built-in 10GbE, and M.2 cache support. The RS2211RP+ is an older, slower 2 GB unit with 6 bays but no meaningful modern expansion options, no 10GbE, and no M.2. For a home/SMB buyer, the RS1626xs+ is the clear choice unless price alone is the deciding factor.