Side-by-side specifications of the Synology DS213 and DS215j, from official datasheets. Differences are highlighted.
| DS213 | DS215j | |
| CPU | unknown | Marvell Armada 375 dual-core 800 MHz |
| Cores / threads | unknown | 2 cores / 2 threads |
| RAM (base) | unknown | 512 MB DDR3 |
| RAM (max) | unknown | 512 MB |
| Drive bays | 2 | 2 |
| Expandable to | 0 | 0 |
| M.2 slots | 0 | 0 |
| Network | 1× Gigabit | 1× Gigabit Ethernet |
| 10GbE | no | no |
| Max raw capacity | 8 TB | 12 TB |
| Hot-swap | yes | no |
| Form factor | tower | desktop |
| Released | 2012 | 2015 |
| Power consumption | — | — |
| DSM at launch | — | — |