0B36399 WD Ultrastar DC HC320 8TB SAS 256 MB 3.5" Server HDD

Enterprise 3.5-inch SAS CMR HDD for 24x7 bulk storage nodes with the 0B36399

The 0B36399 is a WD Ultrastar DC HC320 8TB enterprise HDD engineered for capacity-driven server and storage platforms where predictable throughput and consistent latency matter more than peak IOPS. Its 7200RPM mechanics and 256MB cache support sustained sequential performance for rebuilds and long-duration streaming workloads, while the 4Kn native sector format aligns with modern filesystems and storage software that benefit from larger block efficiency and reduced write amplification.

Designed around a dual-port SAS architecture, 0B36399 integrates cleanly into expander-based backplanes, HA controllers, and scale-out storage nodes that demand resilient paths and deterministic error handling. The CMR recording method makes 0B36399 a stable choice for RAID arrays by avoiding the variable write behavior associated with SMR media, improving predictability during parity updates and rebuild windows. Secure Erase capabilities with FIPS 140-2 listed support help standardize decommissioning procedures in regulated environments.

Why Choose the 0B36399?

The 0B36399 delivers an efficient density-to-power profile for rack-scale capacity tiers, balancing 8TB per drive with datacentre-class endurance and a 2.0M-hour MTBF rating. For IT teams standardizing on SAS for shared backplanes and multipath designs, 0B36399 provides a scalable building block that simplifies fleet qualification, supports consistent RAID behavior, and enables predictable expansion across storage nodes.

WD Ultrastar engineering focuses on reliability under continuous duty cycles, tight firmware control for enterprise interoperability, and qualification for modern data centre operational standards. This approach helps ensure that 0B36399 behaves consistently across mixed chassis populations and controller ecosystems.

Key Applications:

• Server bulk storage
• RAID arrays
• Scale-out storage nodes
• Backup and archival tiers
• Capacity-focused clusters

At Happyware - Server Hardware you benefit from non-binding offers tailored to your storage architecture and rollout plan, helping you standardize 0B36399 across nodes with the right quantities and lead times. For long-term operational security, you can extend the warranty up to 6 years to match refresh cycles and maintenance models.