Western Digital Ultrastar DC HC330 WUS721010ALE6L4 / 0B42266 10TB 7200RPM 3.5" SATA Hard Drive

Western Digital Part #/MPN: WUS721010ALE6L4

DiscTech Item #: WDC-WUS721010ALE6L4-BN-OE


Enterprise Grade

Capacity: 10TB

Speed: 7,200RPM

Interface Types: SATA

Form Factor: 3.5inx1.0in LFF Hard Drive

Sector Size: 512 / 512e

Sustained Throughput: 217

Electrical Interface: SATA 600 - 6.0Gbps

On-Board Cache: 256MB

Western Digital Ultrastar DC HC330 WUS721010ALE6L4 / 0B42266 10TB 256MB Cache 7200RPM 3.5" LFF SATA 6Gb/s SE Enterprise HDD - Brand New

Western Digital Ultrastar DC HC330 WUS721010ALE6L4 / 0B42266 10TB / 10000GB 256MB Cache 7200RPM 3.5" LFF SATA / Serial ATA 6Gb/s SE / Sanitize Overwrite Enterprise HDD / Hard Disk Drive - Brand New

Mid-capacity Drives

The Ultrastar DC HC300-series provides low to mid-capacity drives that are economical to acquire, yet deliver quick and reliable data access for traditional data center applications.
Economical Capacities and Fast Data Access Key Requirements for HDDs in the Data Center
IT managers need to offer storage tiers as they deploy purpose-built solutions to meet their on-prem, off-prem & cloud storage requirements.  While helium filled drives enable the highest capacities, air-filled drives offer important benefits.  With a lower TCA (total cost of acquisition), legacy options, and higher access density (IOPs/TB), they are the perfect choice for maintaining a desired level of performance while allowing customers to tailor budgets to meet their needs. The Ultrastar® DC HC300-series help to address data center requirements by providing capacities from 4TB to 10TB1 while increasing performance over prior generations.  They are designed for a variety of applications including traditional storage arrays, rack-mounted storage enclosures and server-based distributed storage systems, as well as distributed and scalable computing, including block and file storage architectures.  They are offered at 7,200 RPM with either 6Gb/s SATA or 12Gb/s SAS interface in Advanced Format 4Kn and512e format4. A 512n option is also available on 4TB models to support legacy systems with native 512-byte block sizes.
Technology Innovation Delivers Efficiency and Performance for Traditional and Legacy Systems
Ultrastar DC HC300-series are based on a proven and cost-efficient air-based HDD platform design, with Conventional Magnetic Recording (CMR) technology in a 3.5-inch large form factor.  These HDDs leverage common hardware and firmware while featuring a second-generation, dual-stage microactuator to enhance head positioning accuracy for better drive performance.  Write performance gains are also supported by Western Digital’s media cache architecture, a disk-based caching technology that provides a large cache area on the disk, improving reliability and data integrity. Finally, the addition of a flash-based non-volatile cache (NVC) on both SATA and SAS models helps improve write performance.


This drive is compatible with any server that accepts 3.5in x 1.0in (LFF) SATA drives.

Western Digital Ultrastar DC HC330
Model NumberWUS721010ALE6L4
Part Number0B42266
InterfaceSATA 6 Gb/s
Formatted Capacity10TB
Form Factor3.5-inch
Sector Size (bytes)512e: 512
4Kn: 4096
Max Areal Density (Gbits/sq. in., max)869
Data Buffer (MB)256
Rotational Speed (RPM)7200
Latency Average (ms)4.16
Interface Transfer Rate (MB/s, max)600
Sustained Transfer Rate
(MiB/s, typical)
(MB/s, typical)
up to 250
up to 262
Load/Unload Cycles600,000
Error Rate (non-recoverable bits read)1 in 1015
MTBF2M hours
Annual Failure Rate (AFR)0.44%
Requirement+5V, +12V
Operating (W, typical)
Idle (W)
Temperature (℃)
5 to 60°C
-40 to 70°C
Shock (Half-sine wave, 2ms, G)Operating (read/write)
  • 70/50
  • 250
Idle / Operating (Bels, typical)
Height (in/mm, max)10.28/26.1
Length (in/mm, max)5.787/147
Width (in/mm ± .01 in)4/101.6
Weight (g, max)750

ROHS Compliant

Alternate MPNs: 0B42266

Weight: 1.8 lb

Warranty: 1 Year DiscTech

Brand New

Condition Levels Explained

The product is brand new.

1 Year DiscTech Warranty

Product Warranties Explained

The product has a DiscTech warranty for the time period specified. View our limited warranty