3TB HDD Seagate SkyHawk ST3000VX009. Interface: SATA 6 Gb/s.Recording Technology: CMR Drive Design:AirDrive Bays Supported: Up to 8 Mean Time Between Failures (MTBF) (hours) : 1,000,000 hr Warranty (years): 3Lower power consumptionAverage Operating Power (W): 3.5 W Idling Average (W): 2.5 W Standby Mode/Sleep Mode, Typical (W) : 0.25/0.25