Side-by-side specifications of the Synology FS2017 and FS3400, from official datasheets. Differences are highlighted.
| FS2017 | FS3400 | |
| CPU | Intel Xeon D-1541 | Intel Xeon D-1541 |
| Cores / threads | 8 | 8-core |
| RAM (base) | 16 GB DDR4 ECC RDIMM | 16 GB |
| RAM (max) | 128 GB | 128 GB |
| Drive bays | 24 | 24 |
| Expandable to | 72 | 72 |
| M.2 slots | null | null |
| Network | 4x 1GbE + 2x 10GBase-T | 2x 10GbE RJ-45, 4x GbE RJ-45 |
| 10GbE | yes | yes |
| Max raw capacity | 48 TB | 1 PB |
| Hot-swap | yes | yes |
| Form factor | 2U rackmount | 2U rackmount |
| Released | 2017 | 2022 |