HP StorageWorks MSA2 450GB 3G 15K rpm 3.5 inch Dual-port SAS Hard Disk Drive. Hard drive interface: Serial Attached SCSI (SAS), Hard drive capacity: 450 GB, Hard drive size: 8.89 cm (3.5"). Weight: 1.36 kg. Compatibility: StorageWorks MSA2, Dimensions (WxDxH): 806.5 x 548.4 x 419.4 mm, Size: 80.64 cm (31.75"). Weight: 1.36 kg (3 lbs)