Nas drive memory capacity 4 tb form factor 35 inch buffer 64 mb bus sata iii sata 600 series seagate skyhawk suitable for 24 hour continuous operation video surveillance systems charge and discharge cycles 300 000 data transfer rate 210 mbs mtbf 1 000 000 hours manufacturers guarantee 36 months power consumption operating 55 watt power consumption idle 32 watt power consumption standby 025 watt power consumption sleep 025 watt height