Hard Drive Capacity: 146.8GB Generation: Ultra320 Data Transfer Rate: 320 MB/sec Rotational Speed: 15,000 rpm Form Factor (Drive): 3.5-inch low profile Interface: Wide Ultra 320 SCSI; LVD Data Storage Device Type: SAS (Server Attached Storage) device Hard Drive Device Type: Hard drive for server/storage unit (Hot-plug)• Height: 1 inch• Pin Configuration: 80 pin Hot Swappable/ Pluggable• Hotswap Tray: Included (Attached)