1TB Hitachi Ultrastar A7K2000 BDE 3-5-inch SATA desktop hard drive (7200rpm, 32MB cache) 1TB Hitachi Ultrastar A7K2000 Enterprise hard drive 7200rpm, 32MB cache Rotational Vibration Safeguard (RVS) technology SATA II interface 3Gbps 3.5-inch form factor desktop hard drive