0F38652 WD Ultrastar DC HC560 20TB SAS 512 MB 3.5" Server HDD

High-Density 3.5-inch Enterprise SAS HDD tiering architecture with the 0F38652

The 0F38652 is a 20TB Western Digital Ultrastar DC HC560 3.5-inch internal SAS hard drive engineered for capacity-optimised server and storage-array tiers where predictable latency, consistent streaming throughput, and 24/7 duty cycles matter more than flash-level IOPS.

Designed to integrate cleanly into SAS backplanes and RAID/HBA ecosystems, the 0F38652 supports 4Kn formatting with 512e emulation to align with modern OS and array requirements while simplifying mixed-sector migration. Its 7200 RPM mechanics and 512 MB cache target efficient sequential access patterns typical of cold and warm datasets, while EAMR and OptiNAND enhance areal density and metadata handling for sustained operation. Triple Stage Actuator control improves head positioning accuracy, supporting stable performance as drives are densely packed in multi-bay enclosures and vibration conditions increase. Security features including self-encrypting drive support and Secure Erase help meet data lifecycle controls without changing application workflows.

Why Choose the 0F38652?

The 0F38652 delivers a strong density-to-watts profile for scale-out capacity pools, enabling higher TB per rack unit while keeping operational power predictable across large fleets. With 2.5M hours MTBF and enterprise SAS integration, it fits standardised qualification processes, supports reliable rebuild behavior in RAID sets, and scales consistently from single servers to multi-shelf storage arrays where service continuity and manageability are primary design constraints.

WD designs Ultrastar platforms around datacentre endurance, controlled acoustics and vibration tolerance, and firmware tuned for array environments. The 0F38652 reflects this engineering approach with features intended to maintain integrity and uptime under continuous operation and modern storage standards.

Key Applications:

• Capacity-optimised storage tiers
• Backup and archival repositories
• Object and distributed storage nodes
• Media and content libraries
• Log retention and compliance datasets

At Happyware - Server Hardware you benefit from non-binding offers tailored to your storage architecture and procurement scope, plus 24/7 customer service to support qualification, rollout planning, and ongoing expansion of 0F38652 deployments.