Western Digital Gold 22TB Enterprise SATA 3.5" Hard Disk Drive

The Western Digital WD221KRYZ is an enterprise-grade 3.5-inch hard disk drive that delivers 22 TB of raw storage in a single slot. It is designed for organizations that need dependable capacity without sacrificing performance or efficiency.

This model spins at 7200 RPM and connects through a SATA III 6 Gb/s interface. In real-world terms, you can expect transfer speeds that reach up to 291 MB per second, supported by a large 512 MB cache that helps smooth out bursts of heavy input or output.

Because long-term reliability matters as much as speed, Western Digital seals the drive in helium through its HelioSeal process. The lighter gas reduces internal turbulence, which lowers power draw and extends component life. A mean time between failures of 2.5 million hours and a workload rating of 550 TB per year back up its suitability for always-on environments such as data centers, cloud storage nodes, or high-density backup arrays.

ArmorCache technology adds another layer of security by preserving in-flight data if a power loss occurs while write caching is enabled. Built-in vibration protection keeps multi-drive enclosures stable, so large RAID sets or scaled-out SAN deployments can run without unexpected drops in performance.

Whether you manage virtualization clusters, archival repositories, or large media libraries, the WD Gold 22 TB provides the headroom and endurance needed for continuous, mission-critical workloads. It is tested for broad compatibility with major enterprise operating systems, making migrations or expansions straightforward for IT teams.

• 22 TB storage capacity
• 3.5-inch form factor for standard enterprise drive bays
• SATA III 6 Gb/s interface
• 7200 RPM rotational speed
• 512 MB cache
• Transfer rates up to 291 MB/s
• HelioSeal technology for lower power use and extended life
• ArmorCache feature helps protect data during unexpected power loss
• 2.5 million hours MTBF and 550 TB per-year workload rating
• Integrated vibration protection for multi-drive environments