Overview

The Western Digital Ultrastar DC HC310 (HUS726T4TALE6L4) is a 4TB 3.5-inch enterprise-class hard drive engineered for 24x7 data-center and enterprise storage. Built with conventional magnetic recording (CMR), a large 256 MB data buffer and a flash-based non-volatile cache (NVC), the Ultrastar DC HC310 delivers reliable sustained performance for demanding workloads—up to 550 TB/year—while reducing total cost of ownership.

Key Benefits

• Enterprise-grade reliability: 2 million hours MTBF and designed for continuous operation.
• High sustained performance: 7,200 RPM with a 256 MB cache plus NVC for improved write efficiency.
• Flexible compatibility: SATA 6 Gb/s interface (SAS variants available) and Advanced Format support (512e, 4Kn; 512n option on select 4TB models).
• Data security options: Self-Encrypting Drive (SE) variants available for in-drive encryption.
• Long-term support: 5-year limited warranty from Western Digital.

Typical Use Cases

• Cloud and hyperscale object storage (Ceph, OpenStack Swift)
• Distributed file systems and Big Data (Apache Hadoop)
• DAS/NAS and RAID array storage
• Entry-level servers, industrial and surveillance storage

Quick Specs

• Capacity: 4 TB
• Form factor: 3.5-inch
• Interface: SATA 6 Gb/s (SAS 12 Gb/s variants exist)
• RPM: 7200
• Cache: 256 MB (with flash-based NVC)
• Recording: Conventional Magnetic Recording (CMR)
• Sector formats: 512e, 4Kn (512n option on some 4 TB models)
• Reliability: 2,000,000 hours MTBF
• Workload rating: Enterprise-class (up to ~550 TB/year)
• Warranty: 5-year limited