Side-by-side specifications of the Synology DS211+ and DS212j, from official datasheets. Differences are highlighted.
| DS211+ | DS212j | |
| CPU | 1.6 GHz | — |
| Cores / threads | 1 core / 1 thread | — |
| RAM (base) | 512 MB | — |
| RAM (max) | 512 MB | — |
| Drive bays | 2 | 2 |
| Expandable to | 0 | 0 |
| M.2 slots | 0 | 0 |
| Network | 1× Gigabit Ethernet | 1× Gigabit |
| 10GbE | no | no |
| Max raw capacity | 6 TB | 6 TB |
| Hot-swap | yes | no |
| Form factor | Desktop | desktop |
| Released | 2010 | 2011 |
| Power consumption | 24 W / 13 W | 17.6 W / null |
| DSM at launch | 3.0 | — |