Side-by-side specifications of the Synology RS2211RP+ and RS2416RP+, from official datasheets. Differences are highlighted.
| RS2211RP+ | RS2416RP+ | |
| CPU | Dual Core 1.8 GHz | Intel Atom C2538 |
| Cores / threads | 2 | 4 |
| RAM (base) | 1 GB | 2GB |
| RAM (max) | 2 GB | 6GB |
| Drive bays | 10 | 12 |
| Expandable to | 22 | 24 |
| M.2 slots | 0 | 0 |
| Network | 2x Gigabit | 4x 1GbE |
| 10GbE | no | no |
| Max raw capacity | 30 TB | 168TB |
| Hot-swap | yes | yes |
| Form factor | 2U rackmount | 2U |
| Released | 2011 | 2016 |