Western Digital DC HC550 18TB 512MB SATA ULTRA SE NP3

18TB/16TB capacity in a standard 3.5-inch form factor. Industry’s first Energy-Assisted Magnetic Recording technology. Industry’s first Triple Stage Actuator. Leading HelioSeal technology. Reliable, field-proven design across five generations. HelioSeal design delivers power efficiency (Watts/TB). 2.5M hours MTBF rating. Ultrastar DC HC500 Series. High Capacity for Massive Data and Lower Total Cost of Ownership. Driving Up Capacity and Driving Down TCO for Cloud and Hyperscale Data Centers. The breadth and depth of Big Data is driving the universal need for higher capacities across a broad spectrum of applications and workloads. Laying the foundation for a worry-free data center, Western Digital delivers the capacity to conquer the data explosion with the Ultrastar DC HC500 series of hard disk drives (HDDs). The DC HC500 series is designed for public and private cloud environments where storage density and cost-efficient infrastructure is critical.. The 18TB/16TB Ultrastar DC HC550 HDD