Side-by-side specifications of the Synology DS1511+ and DS916+, from official datasheets. Differences are highlighted.
| DS1511+ | DS916+ | |
| CPU | 1.8GHz dual-core | Intel Pentium N3710 |
| Cores / threads | 2 cores / 2 threads | 4 cores / 4 threads |
| RAM (base) | 1GB | 2 GB |
| RAM (max) | 3GB | 8 GB |
| Drive bays | 5 | 4 |
| Expandable to | 10 (2× DX510) | 5 |
| M.2 slots | 0 | 0 |
| Network | 2× Gigabit | 2 x 1GbE |
| 10GbE | no | no |
| Max raw capacity | 15TB | 56 TB internal; 108 TB single volume |
| Hot-swap | yes | yes |
| Form factor | desktop | Desktop |
| Released | 2011 | 2016 |
| Power consumption | 68 W / 30 W | 30 W / unknown |
| DSM at launch | — | — |