0B48721 WD Ultrastar DC HC555 14TB SATA 512 MB 3.5" Server HDD

High-Capacity 3.5in Enterprise SATA HDD for data centre bulk storage with the 0B48721

The 0B48721 is a 14TB WD Ultrastar DC HC555 3.5in internal enterprise HDD engineered for predictable performance and sustained 24/7 duty-cycle operation in server and storage platforms. Designed around a 7200RPM CMR media layout with ePMR recording and a 512MB cache, the 0B48721 targets capacity-heavy tiers where sequential throughput consistency and rebuild stability matter more than low-latency flash characteristics.

In scale-out and software-defined architectures, the 0B48721 aligns with SATA backplanes and host bus adapters commonly deployed for dense storage shelves, while maintaining strong transactional integrity for RAID groups and erasure-coded pools. Support for 4Kn/512e sector formats helps standardise integration across modern operating systems and legacy environments, reducing migration friction. The drive’s actuator and rotational vibration sensing design improves head positioning accuracy in multi-bay enclosures, preserving throughput under vibration and mixed workload conditions typical of populated racks.

Why Choose the 0B48721?

The 0B48721 delivers an effective density-to-slot ratio for bulk storage, backup targets, and archive repositories without introducing non-standard interfaces or operational complexity. With enterprise reliability characteristics and a platform fit optimised for scale-out expansion, the 0B48721 supports predictable capacity growth, consistent RAID rebuild behaviour, and controlled operational risk across large drive populations.

WD’s Ultrastar engineering approach prioritises long-life mechanics, firmware tuned for data centre workloads, and integration readiness for modern storage stacks. Built for continuous operation and validated for multi-drive environments, this platform aligns with rack-level thermal, vibration, and serviceability expectations in enterprise data centres.

Key Applications:

• RAID arrays and JBOD storage shelves
• Backup repositories and disk-to-disk targets
• Ceph and object storage clusters
• HDFS and analytics data lakes
• Archive and compliance retention tiers

At Happyware - Server Hardware you benefit from non-binding offers tailored to your storage architecture and deployment timeline, helping you standardise on the 0B48721 across projects and refresh cycles. For long-term operational assurance, you can also extend the warranty up to 6 years to protect high-density capacity investments.