Side-by-side specifications of the Synology RS1221RP+ and RS822RP+, from official datasheets. Differences are highlighted.
| RS1221RP+ | RS822RP+ | |
| CPU | AMD Ryzen V1500B | AMD Ryzen V1500B |
| Cores / threads | 4/8 | 4/8 |
| RAM (base) | 4 GB | 2 GB |
| RAM (max) | 32 GB | 32 GB |
| Drive bays | 8 | 4 |
| Expandable to | 12 | 8 |
| M.2 slots | 0 | 0 |
| Network | 4x 1GbE | 4x 1GbE |
| 10GbE | optional | optional |
| Max raw capacity | 108 TB | 108 TB |
| Hot-swap | yes | yes |
| Form factor | 2U | 1U |
| Released | 2025 | 2025 |