Seagate Constellation.2 1TB, Constellation. Hard drive capacity: 1024 GB, Hard drive interface: SAS, Hard drive speed: 7200 RPM. Power consumption (typical): 5.9 W, Power consumption (standby): 1.52 W, Power consumption (idle): 3.53 W. Width: 2.76" (70.1 mm), Height: 0.591" (15 mm), Depth: 3.95" (100.5 mm). Data transfer rate: 6 Gbit/s