Side-by-side specifications of the Synology DS2015xs and SA6400, from official datasheets. Differences are highlighted.
| DS2015xs | SA6400 | |
| CPU | quad-core CPU | AMD EPYC 7272 |
| Cores / threads | 4 cores | 12 cores / 24 threads |
| RAM (base) | 2 GB | 32 GB DDR4 ECC RDIMM |
| RAM (max) | 8 GB | 1024 GB |
| Drive bays | 8 | 12 |
| Expandable to | 12 | 108 |
| M.2 slots | 0 | — |
| Network | 2 x 10GbE SFP+; 2 x 1GbE RJ-45 | 4×1GbE RJ-45, 2×10GbE RJ-45, 1×management LAN |
| 10GbE | yes | yes |
| Max raw capacity | 48 TB internal; 108 TB maximum file system size | 1.944 PB |
| Hot-swap | yes | yes |
| Form factor | desktop | 2U rackmount |
| Released | 2015 | 2025 |
| Power consumption | — | 180.5 W / 88.56 W |
| DSM at launch | — | — |