Model Specification Rotational speed Interface Recording mode Cache capacity
HUS722T1TALA604 1TB 7200RPM SATA CMR 128MB
HUS722T2TALA604 2TB 7200RPM SATA CMR 128MB
HUS726T4TALE6L4 4TB 7200RPM SATA CMR 256MB
HUS726T6TALE6L4 6TB 7200RPM SATA CMR 256MB
HUS728T8TALE6L4 8TB 7200RPM SATA CMR 256MB
WUS721010ALE6L4 10TB 7200RPM SATA CMR 256MB
WUH721414ALE6L4 14TB 7200RPM SATA CMR 512MB
WUH721816ALE6L4 16TB 7200RPM SATA CMR 512MB
WUH721818ALE6L4 18TB 7200RPM SATA CMR 512MB
WUH722020BLE6L4 20TB 7200RPM SATA CMR 512MB
About this product:
A standard 3.5-inch form factor CMR technology works with all capacity enterprise applications & environments
The first HDD in the industry to harness Energy-Assisted Magnetic Recording (EAMR) technology improves writability and therefore increases areal density.
HelioSeal technology is the foundation for Western Digital’s high capacity HDDs and this is the 6th generation of HelioSeal product
With its massive capacity and 2.5M MTBF (projected) reliability rating, the Ultrastar DC HC550 is ideal for object storage implementations. Object storage systems with erasure coding provide better data durability compared to RAID systems, given their tolerance for simultaneous error conditions.
2.5M hours (projected) MTBF rating & 5-year limited warranty
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Vibration Protection
Enhanced Rotational Vibration Safeguard (RVS) technology uses sophisticated electronics to monitor the drive and correct linear and rotational vibrations in real time for improved performance versus traditional desktop drive in high vibration environments.
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Dual-stage Actuator Technology
Ultrastar drives feature a dual-stage actuator head positioning system for a high degree of accuracy. The primary stage provides course displacement while the secondary stage uses piezoelectric motion to fine tune the head positioning to a higher degree of precision.
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High workload rating
Delivering dependable performance to any storage environment, Ultrastar hard drives are designed with a workload rating* up to 550TB per year, up to 10 times the rating for desktop drives. Ultrastar drives employ advanced technologies for enterprise-class reliability, power efficiency and performance.
*as compared to 55TB/yr workload rating on desktop-class drives
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Enterprise-class storage to rely on
With up to 2.5 million hours MTBF, Ultrastar hard drives deliver reliability and durability, are built for yearly operation (24x7x365) within the most demanding storage environments, and are backed with a 5 year limited warranty.
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HelioSeal Technology
Featured in over 30 million Western Digital hard drives shipped, HelioSeal technology (on 10TB drives and above) allows for higher capacities and less turbulence on large storage arrays. And now on its 5th generation design, HelioSeal technology is field-tested and proven to delivery high capacity, reliability, and power efficiency you can trust.
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Enterprise-class Hard Drives
Ultrastar SATA Series
Ultrastar hard drives feature up to 10 times the workload rating* of desktop drives and employ advanced technologies for enterprise-class reliability, power efficiency and performance. Designed from the ground up to be an ultra-robust storage device, Ultrastar drives are the perfect solution for your business.
*as compared to 55TB/yr workload rating on desktop-class drives
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Designed with a workload rating up to 550TB per year
Up to 2.5M hours MTBF
5 generations of HelioSeal technology (in 10TB and above models)
RVS technology for vibration protection
RAID-specific time-limited error recover (TLER)
