Caractéristiques des Synology DS209 et DS209+ côte à côte, d'après les fiches techniques officielles. Les différences sont surlignées.
| DS209 | DS209+ | |
| CPU | 1.2 GHz | 800 MHz |
| Cœurs / threads | 1 core / 1 thread | 1 core / 1 thread |
| RAM (base) | 256 MB | 512 MB |
| RAM (max.) | 256 MB | 512 MB |
| Baies | 2 | 2 |
| Extensible à | 0 | 0 |
| Emplacements M.2 | 0 | 0 |
| Réseau | 1x Gigabit | 1× Gigabit |
| 10GbE | no | no |
| Capacité brute max. | 4 TB | 2 TB |
| Remplacement à chaud | no | no |
| Format | desktop | Desktop |
| Sortie | 2009 | 2008 |
| Consommation | 25 W / unknown | 32.4 W / 18 W |
| DSM à la sortie | 2.2 | 2.0 |
Choose the DS209+ if you want the stronger CPU and higher RAM ceiling; those are the only meaningful performance advantages. Both are 2-bay units with no expansion beyond the two drives, and neither has 10GbE or M.2. For basic file storage and backups, the DS209 is enough; for heavier multitasking or slower-latency services, the DS209+ is the better pick.