Side-by-side specifications of the Synology DS109 and DS110j, from official datasheets. Differences are highlighted.
| DS109 | DS110j | |
| CPU | 1.2 GHz | 800 MHz |
| Cores / threads | 1 core / 1 thread | 1 core / 1 thread |
| RAM (base) | 128 MB | 128 MB |
| RAM (max) | — | 128 MB |
| Drive bays | 1 | 1 |
| Expandable to | 0 | 0 |
| M.2 slots | 0 | 0 |
| Network | 1× Gigabit Ethernet | 1× Gigabit Ethernet |
| 10GbE | no | no |
| Max raw capacity | 2 TB | 3 TB |
| Hot-swap | no | no |
| Form factor | Desktop | Desktop |
| Released | 2009 | 2010 |
| Power consumption | 19 W / 9 W | 19 W / 9 W |
| DSM at launch | 2.2 | 2.2 |