Server hard drive memory capacity 18 tb form factor 25 inch rpms 10 520 rpm buffer 128 mb bus sas 30 series hgst ultrastar data transfer rate 247 mbs mtbf 2 000 000 hours sector size 4 kb sectors manufacturers guarantee 60 months noise level idle 34 db power consumption operating 74 watt power consumption idle 51 watt shock resistance operating 60 g shock resistance non operating 300 g vibration resistance operating 04 g vibra