Western Digital 10TB RED Pro 256MB. Hard drive capacity: 10000 GB, Hard drive interface: Serial ATA III, Hard drive speed: 7200 RPM. Power consumption (standby): 0.5 W, Power consumption (read): 5.7 W, Power consumption (write): 5.7 W. Width: 101.6 mm, Height: 26.1 mm, Depth: 147 mm