3.5 inch SAS HDD Western Digital Ultrastar DH HC570 22 TB, 12 Gbit/s, 7200 RPM, 512 MB cache

The Western Digital Ultrastar DC HC570 is a 3.5" enterprise-class SAS hard drive offering 22 TB of raw capacity and a 512 MB buffer. Built for data center environments, this 7200 RPM CMR drive uses OptiNAND™ technology and a 10-disk platform to deliver high areal density and maximize storage capacity in space- and power-constrained racks. It is engineered for sustained workloads and provides features for improved resiliency, data protection, and energy-efficient operation.

Advantages

The Ultrastar DC HC570 provides very high data density (22 TB per drive) enabling up to 22.44 PB of raw storage in a typical rack. OptiNAND integration increases non-volatile memory for faster and safer metadata flushes during emergency power off events and enables ArmorCache, which combines the performance of write-cache-enabled mode with the data protection of write-cache-disabled mode. The drive is optimized for low power across sequential and mixed workloads and meets data center reliability requirements with a projected 2.5M MTBF and a 5-year limited warranty.

Suitable for

• Hyperscale and enterprise data centers
• High-density storage arrays and object storage
• Backup and archival systems
• Workloads with heavy application I/O up to 550 TB/year

Key specifications

• Capacity: 22 TB (22,000 GB)
• Form factor: 3.5"
• Interface: SAS (enterprise)
• Rotational speed: 7200 RPM
• Cache: 512 MB
• Recording format: CMR (10-disk platform)
• Projected MTBF: 2,500,000 hours
• Workload rating: up to 550 TB/year
• Weight: 0.67 kg
• Warranty: 5-year limited

How to use

Install the Ultrastar DC HC570 into a compatible 3.5" SAS drive bay or storage array following the server or chassis manufacturer instructions. Configure RAID, security, and encryption options as required by your environment; SED models are available for hardware-based encryption. Monitor drive health and performance through your storage management tools and follow routine backup and maintenance procedures to ensure data integrity.

Recommendations

For optimal operational efficiency, deploy the Ultrastar DC HC570 in systems designed for high-density storage, ensure proper cooling and power delivery, and use compatible RAID levels or erasure-coding schemes appropriate for large-capacity drives. Use monitoring tools to track SMART attributes and replace drives according to your maintenance policy to maintain data-center uptime.