Fujitsu 73GB SAS HDD. Hard drive interface: Serial Attached SCSI (SAS), Hard drive capacity: 73 GB, Hard drive size: 6.35 cm (2.5"). Compatibility: Fujitsu PRIMERGY TX300 S5, PRIMERGY RX200 S5, PRIMERGY RX300 S5, Supported data transfer rates: 3Gbit/s