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The Western Digital (WD) Ultrastar DC HC555 enterprise hard drive delivers stable

storage of up to 20TB while maintaining exceptional performance. This secure,

high-performance drive is optimized for demanding enterprise workloads and

mission-critical business applications.

Enterprise-Grade Drive for High-Workload Applications

With 20TB of storage capacity, the Ultrastar DC HC555 provides high-speed data

storage for data center infrastructures that demand superior reliability. It delivers

cost-effective and dependable access to both structured and unstructured data,

empowering data center architects and IT professionals to achieve reliable

performance,rock-solid dependability, uncompromising security, and an extremely

low total cost of ownership — even under the most demanding 24/7 operating

conditions.

High-Speed Data Storage Built for 24/7 Environments

The Ultrastar DC HC555 is backed by a 2.5 million hours MTBF (Mean Time Between

Failures) rating and supports a workload rate of 550TB per year — far exceeding that

of conventional desktop drives. With advanced caching algorithms, high-speed error

correction mechanisms, and RVS (Rotary Vibration Safeguard) technology, it ensures

consistent and stable read/write performance in both replicated and multi-drive RAID

array systems.

High Performance for Mainstream Data Center Applications

Featuring a SATA 6Gb/s interface, 7200 RPM spindle speed, and a generous 512MB

cache, the Ultrastar DC HC555 integrates efficiently and seamlessly into large-scale

enterprise storage systems. User-definable innovations such as PowerChoice™ power

management technology provide the flexibility to adapt to evolving storage workload

requirements, further reducing the total cost of ownership.

Enhanced Reliability, Data Protection, and Security

Advanced security features provide robust protection for business data directly on

the drive. The Ultrastar DC HC555 is equipped with Instant Secure Erase functionality,

designed for 24/7 non-stop operation in servers and storage arrays, ensuring

comprehensive protection of enterprise business data.