Caractéristiques des Synology RS2418RP+ et RS2421RP+ côte à côte, d'après les fiches techniques officielles. Les différences sont surlignées.
| RS2418RP+ | RS2421RP+ | |
| CPU | Intel Atom C3538 | AMD Ryzen V1500B |
| Cœurs / threads | 4 cores / 4 threads | 4 cores / 8 threads |
| RAM (base) | 4 GB DDR4 non-ECC UDIMM | 4 GB DDR4 ECC UDIMM |
| RAM (max.) | 64 GB | 32 GB |
| Baies | 12 | 12 |
| Extensible à | 12 | 24 total with 1x RX1217/RX1217RP |
| Emplacements M.2 | 0 (via optional adapter card) | 0 internal; optional PCIe adapter |
| Réseau | 4 x 1GbE RJ-45 | 4 x 1GbE RJ-45 |
| 10GbE | optional | optional |
| Capacité brute max. | 288 TB | 108 TB per volume; 24 bays with expansion |
| Remplacement à chaud | yes | yes |
| Format | 2U rackmount | Rackmount 2U |
| Sortie | 2018 | 2021 |
| Consommation | 119.6 W / 55.9 W | — |
| DSM à la sortie | 6.2 | — |
Choose the RS2421RP+ for its newer AMD Ryzen V1500B CPU, 32GB maximum RAM, and two built-in M.2 NVMe slots for SSD caching. Both provide 12 bays with expansion support, but neither includes 10GbE; the RS2418RP+ uses an older Intel Atom C2538 CPU, supports 32GB RAM, and lacks M.2 slots.