PowerEdge T550 Supported Drives
Internal drive bay and hot-plug backplane:
Up to 24 x 2.5” HDD: SAS, SATA, Near-line SAS SSD: SAS, SATA
Up to 8 x 3.5” HDD: SAS, SATA, Near-line SAS SSD: SAS, SATA
Chassis with up to 8 x 3.5" drives with up to 8 NVMe also available.
Datasheet: T550 spec sheet