Side-by-side specifications of the Synology RS814+ and RS814RP+, from official datasheets. Differences are highlighted.
| RS814+ | RS814RP+ | |
| CPU | Intel Atom Dual Core 2.13GHz | Intel Atom Dual Core 2.13GHz |
| Cores / threads | 2/2 | 2 cores / 2 threads |
| RAM (base) | 2GB | 2GB DDR3 |
| RAM (max) | 4GB | 4GB |
| Drive bays | 4 | 4 |
| Expandable to | 4 | 4 via RX410 |
| M.2 slots | 0 | 0 |
| Network | 4x Gigabit | 4x Gigabit |
| 10GbE | no | no |
| Max raw capacity | 20TB | 20TB |
| Hot-swap | yes | yes |
| Form factor | 1U rackmount | 1U rackmount |
| Released | 2014 | 2014 |
Choose the RS814RP+ if you want a redundant power supply; otherwise the RS814+ is the same class of box and is usually the better value. Both use the same CPU and RAM ceiling, both have 4 bays and no expansion to add more internal bays, and neither supports 10GbE or M.2.