Western Digital Ultrastar DC HC550 3.5" 18000 GB Serial ATA III

Ultrastar DC HC500 Series. Higher capacity and lower TCO for cloud and hyperscale data centres. The breadth and depth of Big Data are driving the universal need for higher capacities for a broad spectrum of applications and workloads. Western Digital lays the foundation for a worry-free data centre and delivers the capacity to overcome 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 are critical.

The 18TB/16TB Ultrastar DC HC550 HDDs are the first commercial implementation of Energy-Assisted Magnetic Recording technology and use the industry's first Triple Stage Actuator. These technologies, integrated with HelioSeal on a 9-disk platform, deliver the highest areal density and unmatched Total Cost of Ownership for customer and market needs.

- High capacity
Up to 18 TB HDDs, drop-in ready for Big Data workloads.
- Low power consumption
Up to 61% less idle W/TB than air-filled 10TB Ultrastar drives
- More reliable
25% higher MTBF than air-filled HDDs

The Ultrastar DC HC550 18TB CMR HDD and Ultrastar DC HC650 20TB SMR HDD deliver industry-leading data centre capacity through a combination of new and proven technologies.

Western Digital is the first to deliver Energy-Assisted Magnetic Recording (EAMR) technology and a Triple Stage Actuator (TSA). These new technologies combined with further mechanical innovations and HelioSeal technology provide the highest capacities in the industry to enable data at scale with optimised TCO for data centre architectures, while maintaining workload reliability and performance.