Especificaciones de los Synology RS4021xs+ y RS4826xs+ en paralelo, de las fichas técnicas oficiales. Las diferencias están resaltadas.
| RS4021xs+ | RS4826xs+ | |
| CPU | Intel Xeon D-1541 | Intel Xeon D-1739 |
| Núcleos / hilos | 8 cores / 16 threads | 8 cores / 16 threads |
| RAM (base) | 16 GB DDR4 ECC UDIMM | 16 GB DDR4 ECC RDIMM |
| RAM (máx.) | 64 GB | 96 GB |
| Bahías | 16 | 12 |
| Ampliable a | 40 (with 2× RX1217/RX1217RP) | 48 |
| Ranuras M.2 | Optional via PCIe adapter cards | 0 |
| Red | 4× 1GbE RJ-45; 2× 10GbE RJ-45 | 2 × 10GbE RJ-45; 1 × out-of-band management LAN |
| 10GbE | yes | yes |
| Capacidad bruta máx. | 1 PB single volume | 48 drives |
| Intercambio en caliente | yes | yes |
| Formato | 3U rackmount | 2U rackmount |
| Lanzamiento | 2021 | 2026 |
| Consumo | 145.79 W / 62.68 W | 155.24 W / 76.15 W |
| DSM de lanzamiento | — | — |
Choose the RS4826xs+ if you want the newer platform: it uses a much stronger CPU, supports a higher RAM ceiling, has more bays, and includes 10GbE and M.2 built in. The RS4021xs+ is the older, simpler choice only if you’re fine with fewer bays, lower expandability, and don’t need the extra onboard networking/cache features.