Internal drive bay and hot-plug backplane: Up to 8 x 2.5” HDD: SAS, SATA, Near-line SAS SSD: SAS, SATA Up to 5 x 3.5” HDD: SAS, SATA, Near-line SAS SSD: SAS, SATA
Datasheet: R900 spec sheet
480GB 3D MLC SATA 6Gb/s 3.5" Hybrid SSD for Dell PowerEdge Servers | Enterprise Drive in 13G Tray
4TB SATA 6Gb/s 7.2K RPM 3.5" HDD for Dell PowerEdge Servers | Enterprise Drive in 13G Tray