WUH722020BL5204 Western Digital 20TB SAS 12Gb/s 512MB 3.5-inch Hard Drive
WUH722020BL5204 Overview
The Western Digital Ultrastar DC HC560 20TB (Model: WUH722020BL5204) is a high-performance, enterprise-grade hard drive designed to meet the massive storage demands of modern data centers and cloud service providers. As one of the first drives to introduce Western Digital’s groundbreaking OptiNAND technology, the HC560 redefines storage efficiency by integrating an iNAND UFS Embedded Flash Drive (EFD) with traditional spinning media. This innovative architecture enhances drive resiliency, improves write performance, and allows for higher areal density. Engineered for 24/7 reliability in mission-critical environments, the HC560 is the perfect solution for hyperscale cloud storage, massive scale-out systems, and high-density computing clusters where maximizing capacity per rack is essential.
$730
WUH722020BL5204 Technical Specifications
Western Digital Ultrastar DC HC560 20TB 7200RPM SAS 12Gb/s 512MB Cache Data Center 3.5-inch Hard Drive
Manufacturer: Western Digital
Manufacture Part Number: WUH722020BL5204
Series: Ultrastar DC HC560
Storage Capacity: 20 Terabytes (20TB)
Interface Type: SAS 12Gb/s (Dual-port)
Form Factor: 3.5-Inch LFF
Recording Technology: Conventional Magnetic Recording (CMR) with OptiNAND
Enclosure Design: HelioSeal (Helium-filled)
Performance Metrics
Spindle Rotation Speed: 7200 RPM
Data Buffer (Cache): 512 MB
Sustained Transfer Rate: Up to 269 MB/s (256 MiB/s)
Interface Transfer Rate: 12.0 Gb/s
Average Latency: 4.16 ms
Reliability & Integrity
MTBF (Mean Time Between Failure): 2,500,000 Hours
AFR (Annualized Failure Rate): 0.35%
Workload Rating: Up to 550TB per Year
Load/Unload Cycles: 600,000
Power & Environmental
Operating Power (Typical): 9.3 Watts
Idle Power (Typical): 6.2 Watts
Operating Temperature: 5C to 60C
Non-operating Temperature: -40C to 70C
Shock Resistance: 40G (2ms, Read/Write)
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