Side-by-side specifications of the Synology DS1812+ and DS1815+, from official datasheets. Differences are highlighted.
| DS1812+ | DS1815+ | |
| CPU | Dual Core 2.13GHz | Intel Atom C2538 |
| Cores / threads | 2 | 4 cores / 4 threads |
| RAM (base) | 1 GB | 2 GB |
| RAM (max) | 3 GB | 6 GB |
| Drive bays | 8 | 8 |
| Expandable to | 18 | 10 |
| M.2 slots | 0 | 0 |
| Network | 2x Gigabit | 4x Gigabit |
| 10GbE | no | optional |
| Max raw capacity | 54 TB | 48 TB |
| Hot-swap | yes | yes |
| Form factor | desktop | desktop |
| Released | 2012 | 2015 |