PowerEdge R620 Supported Drives

Internal drive bay and hot-plug backplane:
Up to 10 x 2.5” HDD: SAS, SATA, Near-line SAS SSD: SAS, SATA
Up to 4 x 2.5” HDD: SAS, SATA, Near-line SAS SSD: SAS, SATA, Up to 2 NVMe PCIe 

Datasheet: R620 spec sheet 

PER620