Hitachi HUA723030ALA640 3TB Hitachi UltraStar 7K3000 HUA723030ALA640 7200RPM SATA Hard Drive 3 Terabyte (3TB) storage capacity, Serial ATA interface SATA/600 (6GB/s) data transfer rate, 7200 RPM spindle speed 64 MB buffer, 3.5-inch form factor, Advanced Power Management HiVERT technology, Thermal Fly-height Control (TFC), Head load/unload protects disk during non-operation S.M.A.R.T. command transport, LDPC and CRC protection, Internal thermal sensor