HP AJ736A. Hard drive interface: Serial Attached SCSI (SAS), Hard drive capacity: 300 GB, Hard drive size: 8.89 cm (3.5"). Weight: 2.27 kg. Compatibility: StorageWorks MSA2, Dimensions (WxDxH): 317.5 x 215.9 x 165.1 mm, Size: 31.75 cm (12.5"). Weight: 2.27 kg (5 lbs)