0F27403 WD Ultrastar DC HC510 10TB SAS 256 MB 3.5" Server HDD

Datacenter-Class 3.5in SAS Enterprise HDD with 4Kn CMR Architecture using the 0F27403

The 0F27403 is a WD Ultrastar DC HC510 10TB datacenter internal HDD engineered for capacity-centric tiers where predictable latency and sustained throughput are required. Built for 24x7 operation, the drive targets SAS JBOD and RAID shelves that need stable performance under mixed sequential and random access patterns while maintaining enterprise serviceability.

With a 7200 RPM CMR recording method and 256MB cache, 0F27403 supports consistent write behavior that aligns with rebuild scenarios and long, streaming workloads. The SAS single-port interface provides robust command queuing and dual-domain back-end integration, while the native 4Kn sector format improves formatting efficiency and reduces write amplification in modern filesystems. The helium-filled mechanical design is optimized for dense enclosures, and the integrated SED hardware encryption in 0F27403 enables at-rest protection without consuming host CPU cycles or disrupting array-level key management workflows.

Why Choose the 0F27403?

The 0F27403 delivers an enterprise density-to-performance balance for scale-out capacity pools, pairing 10TB per spindle with datacenter reliability expectations. Its 4Kn alignment and CMR characteristics make it suitable for environments that prioritize predictable behavior during RAID parity operations, while the SAS attachment model supports scalable shelf expansion and standardized operational procedures across large fleets.

WD designs Ultrastar platforms with an engineering focus on continuous duty-cycle resilience, qualification for multi-drive enclosures, and compatibility with current data centre storage standards. The 0F27403 reflects this approach through datacenter-class mechanical tuning, security integration, and reliability targets appropriate for always-on infrastructure.

Key Applications:

• SAS JBOD and RAID storage shelves
• SAN/NAS capacity back-end tiers
• Virtualization datastores and capacity pools
• Backup, archive, and retention repositories
• Log and telemetry data landing zones

At Happyware - Server Hardware you benefit from non-binding offers tailored to your rollout plan for 0F27403 deployments and extended warranty options up to 6 years to align drive lifecycle coverage with your datacenter refresh strategy.