Side-by-side specifications of the Synology RS217 and RS422+, from official datasheets. Differences are highlighted.
| RS217 | RS422+ | |
| CPU | Marvell ARMADA 385 88F6820 | AMD Ryzen R1600 |
| Cores / threads | 2 cores | 2/4 |
| RAM (base) | 512MB | 2 GB |
| RAM (max) | 512MB | 32 GB |
| Drive bays | 2 | 4 |
| Expandable to | 0 | — |
| M.2 slots | 0 | — |
| Network | 2x 1GbE RJ-45 | 2x 1GbE RJ-45 |
| 10GbE | no | optional |
| Max raw capacity | 28TB | 108 TB |
| Hot-swap | yes | yes |
| Form factor | 1U rackmount | 1U |
| Released | 2017 | 2025 |