Nas drive memory capacity 8 tb form factor 35 inch rpms 5 400 rpm buffer 128 mb bus sata iii sata 600 series western digital red special feature ncq support suitable for 24 hour continuous operation nas systems charge and discharge cycles 600 000 data transfer rate 175 mbs connections 15 pin power connection mtbf 1 000 000 hours technology intellipower sector size 512e sectors manufacturers guarantee 36 months noise level operating 29 db