Desktop hard drive memory capacity 5 tb form factor 35 inch rpms 7 200 rpm buffer 64 mb bus sata iii sata 600 intellipower 5400 7200 rpm range series western digital purple suitable for video surveillance systems 24 hour continuous operation mtbf 1 000 000 hours technology intellipower sector size 512e sectors manufacturers guarantee 36 months noise level operating 26 db noise level idle 25 db power consumption operating 53 watt power