Especificaciones de los Synology RS3621xs+ y SA3600 en paralelo, de las fichas técnicas oficiales. Las diferencias están resaltadas.
| RS3621xs+ | SA3600 | |
| CPU | Intel Xeon D-1541 | Intel Xeon D-1567 |
| Núcleos / hilos | 8 cores / 16 threads | 12 cores / 24 threads |
| RAM (base) | 8 GB DDR4 ECC UDIMM | 16 GB DDR4 ECC RDIMM |
| RAM (máx.) | 64 GB | 128 GB |
| Bahías | 12 | 12 |
| Ampliable a | 36 | Up to 168 additional bays |
| Ranuras M.2 | 0 (via PCIe adapter cards) | 0 |
| Red | 4×1GbE RJ-45, 2×10GbE RJ-45 | 4 x 1GbE RJ-45, 2 x 10GbE RJ-45 |
| 10GbE | yes | yes |
| Capacidad bruta máx. | 1 PB single volume | 192 TB internal; 1536 TB with expansion |
| Intercambio en caliente | yes | yes |
| Formato | 2U rackmount | 2U rackmount |
| Lanzamiento | 2021 | 2019 |
| Consumo | — | 500 W / unknown |
| DSM de lanzamiento | — | 6.2 |