Caractéristiques des Synology DS1621xs+ et DS1812+ côte à côte, d'après les fiches techniques officielles. Les différences sont surlignées.
| DS1621xs+ | DS1812+ | |
| CPU | Intel Xeon D-1527 2.2/2.7 GHz | Dual Core 2.13 GHz |
| Cœurs / threads | 4 cores / 8 threads | 2 cores / 2 threads |
| RAM (base) | 8 GB DDR4 ECC SODIMM | 1 GB |
| RAM (max.) | 32 GB | 3 GB |
| Baies | 6 | 8 |
| Extensible à | 16 total with 2× DX517 | 10 |
| Emplacements M.2 | 2× M.2 2280 NVMe | 0 |
| Réseau | 2× 1GbE RJ-45, 1× 10GbE RJ-45 | 2x Gigabit |
| 10GbE | yes | no |
| Capacité brute max. | 96 TB internal; 256 TB with 2× DX517 | 54 TB |
| Remplacement à chaud | yes | yes |
| Format | Tower | Desktop |
| Sortie | 2020 | 2012 |
| Consommation | — | 71.5 W / 28.6 W |
| DSM à la sortie | — | — |
Choose the DS1621xs+ if you want a much faster Intel Xeon CPU, far higher RAM ceiling, built-in 10GbE, and M.2 NVMe SSD cache support; it’s the clear performance/upgrade winner. Choose the DS1812+ only if you just need an older, basic 8-bay NAS with no 10GbE or M.2 and much lower headroom. The decisive tradeoff is modern speed and expansion on the 1621xs+ versus the older, simpler, cheaper 1812+.