The Dell PowerEdge R640 (14G) supports SAS SSDs, SATA SSDs, and NVMe U.2 drives. The number and type depend on your backplane configuration.
Drive Options
| Config | Bays | Interface |
|---|---|---|
| 8 SFF | 8x 2.5″ | SAS/SATA/NVMe |
| 10 SFF | 10x 2.5″ | SAS/SATA (8) + NVMe (2) |
| 4 LFF | 4x 3.5″ | SAS/SATA only |
