0F29562 WD Ultrastar DC HC520 12TB SAS 256 MB 3.5" Server HDD

High-Density 3.5in Datacenter SAS HDD for Capacity Tiers and JBOD with the 0F29562

The 0F29562 is a 12TB WD Ultrastar DC HC520 internal HDD engineered for datacenter capacity platforms where the storage layer must sustain continuous operation under mixed sequential and random IO patterns. As a SAS single-port device with 4Kn sector format, the 0F29562 integrates cleanly into enterprise backplanes and HBA/RAID controller architectures, supporting deterministic behavior in large drive counts and standardized block alignment for modern filesystems and object storage stacks.

Within servers and storage enclosures, the 0F29562 complements CPU-centric throughput by providing cost-efficient, scalable bulk capacity for tiering and repositories, while PCIe-based controllers and expander topologies manage queueing and bandwidth aggregation across shelves. A 7200RPM CMR recording profile and 256MB cache help maintain predictable write characteristics for rebuild operations and sustained ingest workloads. The helium-filled mechanical design focuses on long-term reliability at scale, and Secure Erase support aligns with operational processes for decommissioning and media lifecycle control.

Why Choose the 0F29562?

The 0F29562 is optimized for high drive-density deployments where capacity-per-U, RAID resiliency, and service continuity dominate the architecture. Its 24/7 duty-cycle positioning and 2.5M-hour MTBF target help reduce operational risk in RAID arrays, SAN/NAS capacity tiers, and scale-out pools, enabling consistent expansion planning and predictable performance during rebuilds and background maintenance.

WD designs Ultrastar datacenter drives around controlled acoustics, power efficiency, and rigorous validation for enclosure compatibility, aligning with modern datacenter standards for continuous operation, secure media handling, and consistent firmware behavior across large fleets.

Key Applications:

• JBOD bulk storage shelves
• Scale-out and object storage capacity nodes
• Backup and archive repositories
• RAID arrays and rebuild-intensive tiers
• SAN/NAS capacity expansion

At Happyware - Server Hardware you benefit from Non-Binding Offers tailored to your capacity and enclosure architecture for the 0F29562, plus Bulk Order Discount options that support standardized rollouts across racks and sites.