Side-by-side specifications of the Synology FS3400 and FS3600, from official datasheets. Differences are highlighted.
| FS3400 | FS3600 | |
| CPU | Intel Xeon D-1541 | Intel Xeon D-1567 |
| Cores / threads | 8-core | 12/24 |
| RAM (base) | 16 GB | 16 GB |
| RAM (max) | 128 GB | 128 GB |
| Drive bays | 24 | 24 |
| Expandable to | 72 | 72 |
| M.2 slots | null | 0 |
| Network | 2x 10GbE RJ-45, 4x GbE RJ-45 | 4x1GbE, 2x10GbE |
| 10GbE | yes | yes |
| Max raw capacity | 1 PB | 92.16 TB |
| Hot-swap | yes | yes |
| Form factor | 2U rackmount | 2U rack |
| Released | 2022 | 2026 |