WD Ultrastar DC HC560 20TB 3.5-inch SATA 6Gb/s 7200 RPM Enterprise Nearline HDD

The WD Ultrastar DC HC560 is a 20TB 3.5-inch enterprise nearline hard drive engineered for high-density storage deployments in hyperscale datacenters, cloud infrastructure, and AI data lake environments. Built on Western Digital's ninth-generation ePMR (energy-assisted perpendicular magnetic recording) technology and utilizing OptiNAND™ architecture — which integrates an iNAND embedded flash drive to enhance the HDD's intelligence — the HC560 delivers a raw capacity of 20TB across nine platters with helium-sealed enclosure technology for reduced friction, lower power consumption, and improved areal density.

The drive operates at 7,200 RPM and connects via SATA 6Gb/s interface, offering a sustained transfer rate suitable for sequential read/write workloads characteristic of large-scale analytics pipelines, backup repositories, and object storage systems. It carries a workload rating of 550TB per year and a 2.5 million hours MTBF rating, reflecting the reliability requirements of always-on enterprise environments. The 512MB cache buffer, enhanced by OptiNAND's extended metadata storage on embedded flash, supports improved random I/O and rotational vibration compensation in multi-drive chassis configurations.

As part of the Ultrastar DC product line, the HC560 is designed to meet the demands of system integrators and enterprise IT architects specifying high-capacity storage nodes for AI training datasets, video surveillance archives, content delivery origin storage, and compliance-driven long-term retention. The helium-sealed design contributes to a lower operating power profile compared to air-filled equivalents, supporting datacenter power and cooling efficiency targets. Western Digital offers this drive with its standard Ultrastar enterprise-class qualification and validation program, making it suitable for 24×7 continuous operation in rack-mounted JBOD and server platforms.

Ideal for

• Hyperscale and cloud datacenter bulk storage nodes requiring maximum capacity per rack unit with sustained throughput for object storage workloads
• AI and machine learning data lake repositories storing large unstructured training datasets, model checkpoints, and inference result archives
• Backup, disaster recovery, and long-term data retention systems where high capacity and workload endurance reduce total drive count and operational complexity
• Video surveillance and media asset management platforms archiving high-resolution footage streams requiring continuous write performance across multi-drive arrays
• High-density NAS and scale-out file system deployments in enterprise environments consolidating secondary and cold-tier storage workloads
• Content delivery and streaming origin servers storing large media libraries where sequential read throughput and rotational vibration tolerance in dense enclosures are critical

Technical specifications

Available from Omnixon Global. Submit an RFQ and our team will confirm configuration and availability for your order.