Side-by-side specifications of the Synology DS1812+ and DS3611xs, from official datasheets. Differences are highlighted.
| DS1812+ | DS3611xs | |
| CPU | Dual Core 2.13GHz | Intel Xeon |
| Cores / threads | 2 | 2/4 |
| RAM (base) | 1 GB | 2GB |
| RAM (max) | 3 GB | 8GB |
| Drive bays | 8 | 12 |
| Expandable to | 18 | 2x DX1211 |
| M.2 slots | 0 | 0 |
| Network | 2x Gigabit | 4x GbE |
| 10GbE | no | optional |
| Max raw capacity | 54 TB | 100TB |
| Hot-swap | yes | yes |
| Form factor | desktop | desktop |
| Released | 2012 | 2011 |