Internal drive bay and hot-plug backplane: Up to 26 x 2.5” HDD: SAS, SATA, Near-line SAS SSD: SAS, SATA Up to 12 x 3.5” + 2 x 2.5" HDD: SAS, SATA, Near-line SAS SSD: SAS, SATA
Datasheet: R720xd spec sheet
Refurbished: 3.84TB MLC SAS 12Gb/s 3.5" Hybrid SSD for Dell PowerEdge Servers | Enterprise Drive in 13G Tray
Refurbished: 3.84TB MLC SAS 12Gb/s 2.5" SSD for Dell PowerEdge Servers | Enterprise Drive in 13G Tray