The Western Digital Ultrastar DC HC555 20TB WUH722020CLE6L4 (0B48724) is a high-capacity 3.5-inch enterprise hard drive engineered for data centres, cloud infrastructure and demanding server storage environments. Featuring a SATA 6Gb/s interface, 7200RPM rotational speed, 512MB cache and CMR recording technology, it delivers sustained transfer rates of up to 285MB/s. Built with HelioSeal helium technology, energy-assisted magnetic recording (ePMR) and rotational vibration protection, this enterprise HDD provides reliable 24/7 storage with a 550TB annual workload rating and a 5-year limited warranty.
Technical Specifications
Specification
Details
Brand
Western Digital (WD)
Product Family
Ultrastar
Product Series
Ultrastar DC HC555
Model Number
WUH722020CLE6L4
WD Part Number
0B48724
Product Type
Enterprise Data Centre HDD
Storage Capacity
20TB
Form Factor
3.5-inch
Interface
SATA 6Gb/s
Connector
SATA
Sector Format
512e
Logical Sector Size
512 bytes
Rotational Speed
7200RPM
Recording Technology
CMR
Magnetic Recording
ePMR
Cache Memory
512MB
Maximum Sustained Transfer Rate
Up to 285MB/s
Average Latency
4.16ms
Annual Workload Rating
550TB/year
MTBF
2,500,000 hours (projected)
Annualized Failure Rate
0.35% (projected)
Non-Recoverable Read Errors
1 in 10¹⁵ bits read
Load/Unload Cycles
600,000
Operating Availability
24 hours/day, 7 days/week
Helium Technology
HelioSeal
Vibration Protection
Rotational Vibration Safeguard
Actuator Technology
Triple-Stage Micro Actuator
Security Configuration
SE – Standard Edition, no encryption
Power Disable Pin 3
Not supported – legacy configuration
Typical Operating Power
6.4W
Typical Idle Power
5.3W
Power Supply
+5VDC and +12VDC
Operating Temperature
5°C to 60°C
Non-Operating Temperature
-40°C to 70°C
Dimensions (L × W × H)
147 × 101.6 × 26.1mm
Weight
Approximately 690g
Warranty
5-Year Limited Warranty
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