WD 8TB Ultrastar DC HC320 SATA HDD 7200RPM SATA 6 Gb/s 256MB Cache: From the manufacturerEnterprise-class Hard DrivesUltrastar SATA SeriesUltrastar hard drives feature up to 10 times the workload rating* of desktop drives and employ advanced technologies for enterprise-class reliability, power efficiency and performance. Designed from the ground up to be an ultra-ro