Side-by-side specifications of the Synology SA3200D and SA3400D, from official datasheets. Differences are highlighted.
| SA3200D | SA3400D | |
| CPU | Intel Xeon D-1521 | Intel Xeon D-1541 |
| Cores / threads | 4/8 | 8/16 |
| RAM (base) | 8 GB per controller | 8 GB |
| RAM (max) | 64 GB per controller | 64 GB |
| Drive bays | 12 | 12 |
| Expandable to | 24 | 36 |
| M.2 slots | 0 | 0 |
| Network | 1GbE x2 + 10GbE x1 per controller | 2x1GbE+1x10GbE per controller |
| 10GbE | yes | yes |
| Max raw capacity | 576 TB | 576 TB |
| Hot-swap | yes | yes |
| Form factor | 2U rackmount | 2U rack |
| Released | 2026 | 2025 |