Side-by-side specifications of the Synology DS1819+ and DS2015xs, from official datasheets. Differences are highlighted.
| DS1819+ | DS2015xs | |
| CPU | Intel Atom C3538, 2.1 GHz | quad-core CPU |
| Cores / threads | 4 cores / 4 threads | 4 cores |
| RAM (base) | 4 GB DDR4 | 2 GB |
| RAM (max) | 32 GB | 8 GB |
| Drive bays | 8 | 8 |
| Expandable to | 18 | 12 |
| M.2 slots | 2 via optional adapter | 0 |
| Network | 4 x Gigabit RJ-45 | 2 x 10GbE SFP+; 2 x 1GbE RJ-45 |
| 10GbE | optional | yes |
| Max raw capacity | 96 TB internal; 108 TB with expansion | 48 TB internal; 108 TB maximum file system size |
| Hot-swap | yes | yes |
| Form factor | desktop | desktop |
| Released | 2019 | 2015 |
| Power consumption | 66.96 W / 29.39 W | — |
| DSM at launch | — | — |