WD Ultrastar DC HC570 22TB

Brand: Western Digital | Category: Enterprise HDDs

SKU: WUH722222ALE6L4 | Part #: WUH722222ALE6L4 | MPN: SKU-WUH722222ALE6L4

Contact for Pricing — Request a Quote

The WD Ultrastar DC HC570 22TB (SKU-WUH722222ALE6L4) ships with a 512 MB cache buffer and delivers a maximum sustained data transfer rate of 272 MB/s—specifications that immediately signal this drive's suitability for specific storage tiers rather than universal deployment. That cache size and throughput ceiling matter enormously when you're architecting backup targets, cold storage NAS arrays, or archive-tier infrastructure. They tell you what this drive can and cannot do, and honest specification review prevents costly architectural mistakes downstream.

Western Digital engineered the Ultrastar DC HC570 line as a purpose-built enterprise platform for workloads that demand reliability over speed. The 22TB model uses traditional SATA 6 Gbps connectivity, 7,200 RPM spindle speed, and a 2.5 million hour MTBF rating—metrics that reflect decades of refinement in mechanical disk design. This is not a performance-tier drive chasing sequential I/O records. Instead, Western Digital focused the HC570 family on delivering consistent service across long duty cycles, particularly in read-heavy or sequential-access environments where random I/O latency is not the limiting factor. When you're building a data centre cold tier or an archive appliance that expects to hold data for years with minimal maintenance, the HC570's character becomes advantageous rather than limiting.

Power loss protection (PLP) via onboard capacitors comes standard on the SKU-WUH722222ALE6L4, a feature that storage architects and data-centre infrastructure teams treat as non-negotiable in mission-critical arrays. Should a mains failure occur mid-write, the capacitor bank supplies enough energy to safely park the write head and cache any pending operations to stable media. In large RAID configurations or in dual-controller storage systems, that protection directly reduces the risk of corruption or data loss during unplanned power events—particularly valuable in facilities where UPS capacity is limited or where redundancy must account for human error during maintenance windows. Western Digital backed this reliability posture with a 5-year limited warranty, acknowledging that enterprises expect multi-year service life from drives of this capacity and cost profile.

The 22TB capacity in a 3.5-inch form factor balances density against thermal and mechanical constraints that have shaped the enterprise HDD market for over a decade. Storage procurement teams and systems engineers know that larger capacities per drive reduce spindle count, power draw per terabyte, and overall rack density costs—but only up to the point where reliability metrics remain acceptable. Western Digital's specification of a 0.73% annualized failure rate on the HC570 suggests the company has found a stable equilibrium at this capacity. That translates to roughly seven failed drives per thousand units per year, a rate that storage architects use to model RAID rebuilding windows and spare-part provisioning. In a 100-drive array, you would statistically expect less than one drive failure annually, manageable within standard redundancy schemes without excessive over-provisioning.

The Ultrastar DC HC570 series appeals directly to infrastructure teams running large-scale backup repositories, tape-adjacent archive tiers, and high-capacity NAS appliances where purchase price per terabyte and power efficiency per terabyte matter more than sub-millisecond latency. Data-centre operations teams, storage architects, and IT procurement managers in the region routinely evaluate drives like this SKU-WUH722222ALE6L4 when consolidating backup infrastructure or refreshing aging storage arrays. The 272 MB/s transfer rate is sufficient for these roles; the 512 MB cache prevents thrashing; the enterprise endurance rating and PLP protection address operational risk. For facilities standardizing on Western Digital platforms, adding the HC570 line simplifies procurement, training, and spare-part logistics—a practical consideration often overlooked in pure specification comparisons.

Enterprise Datacenter Specifications & Positioning

• Capacity: 22 TB in 3.5-inch form factor; 512 MB cache buffer; 272 MB/s sustained data transfer rate
• Interface: SATA 6 Gbps; 7,200 RPM spindle; 2.5 million hour MTBF; 0.73% annualized failure rate
• Power Loss Protection: Onboard capacitors (PLP) ensure safe shutdown and write cache flush during mains failure or unexpected power loss
• Endurance & Warranty: Enterprise-class workload rating; 5-year limited warranty; designed for continuous operation in climate-controlled data-centre environments
• Thermal & Power Efficiency: Lower spindle count per terabyte compared to smaller models; optimized for large RAID arrays and archive-tier storage appliances
• Part Number: SKU-WUH722222ALE6L4 (Western Digital); compatible with major NAS platforms, storage controllers, and tape-alternative archive systems

Omnixon Global supplies the WD Ultrastar DC HC570 22TB and complementary enterprise storage solutions across the GCC, Asia-Pacific, and European regions. Our technical team has hands-on experience integrating Western Digital platforms into data-centre refresh cycles, backup infrastructure upgrades, and archive-tier deployments for organisations ranging from mid-market enterprises to hyperscale operators. If your facility is evaluating 22TB capacity drives for cold storage, backup, or archive applications, we invite you to submit an RFQ specifying your rack configuration, duty-cycle requirements, and compliance needs. We maintain regional inventory, provide pre-deployment asset tagging and firmware validation, and connect you directly with Western Digital's regional support teams for volume deployments.