Seagate Cheetah 15K.5 300GB 16MB Serial Attached SCSI, Cheetah. Hard drive capacity: 300 GB, Hard drive size: 88.9 mm (3.5 "), Hard drive rotational speed: 15000 RPM. Power consumption (typical): 17.4 W. Weight: 771 g, Height: 25.4 mm, Width: 101.6 mm. Operating temperature range (T-T): 5 - 55 °C, Storage temperature range (T-T): -40 - 70 °C, Operating shock: 60 G