Side-by-side specifications of the Synology RS3614xs+ and SA3400D, from official datasheets. Differences are highlighted.
| RS3614xs+ | SA3400D | |
| CPU | Intel Xeon E3 quad-core 3.3 GHz | Intel Xeon D-1541 |
| Cores / threads | 4 cores / 8 threads | 8 cores / 16 threads |
| RAM (base) | 8 GB ECC | 8 GB DDR4 ECC UDIMM per controller |
| RAM (max) | 32 GB ECC | 64 GB per controller |
| Drive bays | 12 | 12 |
| Expandable to | 24 (up to 36 total) | 36 total with 2× RXD1219sas |
| M.2 slots | 0 | 0 |
| Network | 4 x Gigabit | 2× 1GbE + 1× 10GbE per controller |
| 10GbE | optional | yes |
| Max raw capacity | 216 TB | 192 TB raw; 576 TB expanded |
| Hot-swap | yes | yes |
| Form factor | 2U rackmount | 2U rackmount |
| Released | 2014 | 2025 |
| Power consumption | unknown | 257.78 W / unknown |
| DSM at launch | — | — |