Seagate Desktop HDD ST3000DM003 3TB 5900RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive (PC, NAS, CCTV DVR)- w/1 Year Warranty 3TB, SATA 6Gb/s, 64MB, 5900RPM Quiet & Low Power consumption Best for Desktop or all-in-one PCs, NAS, Surveillance CCTV DVR Designed for 24/7 Operation 1 Year Warranty from Reseller