Western Digital Ultrastar DC HC310 HUS726T6TALE6L4 – hard drive – 6 TB – SATA 6Gb/s



  • 24×7 continuous operation
  • Advanced format 4Kn
  • Dual Stage Actuator (DSA)
  • Dynamic fly height technology
  • Enhanced Rotational Vibration Safeguard (RVS)
  • HelioSeal
  • Secure Erase function


  • Excellent random and sequential performance
  • 6TB and 4TB capacity points support traditional IT systems
  • Sustained transfer rate up to 255MB/s (512e/4Kn models); 233MB/s (512n models)
  • Choice of 12Gb/s SAS or 6Gb/s SATA
  • Advanced Format 4Kn and 512e models up to 6TB; 512n formatting available on 4TB to support legacy systems
  • Self-Encrypting Drive (TCG SAS) options


Applications & Workloads

  • Distributed file systems, like Apache Hadoop®, to support Big Data analytics
  • Direct & Network Attached Storage (DAS & NAS)
  • RAID arrays
  • Legacy applications requiring 512n format (4TB)

Economics and Access Speed: Key Requirements for Low Capacity HDDs in the Data Center
As the industry evolves to develop purpose-built solutions for growing data storage requirements, IT managers continue to rely on lower capacity drives that are economical to acquire, yet deliver quick and reliable data access for traditional data center applications. Ultrastar® 7K6 is a low-capacity HDD, with 6TB and 4TB offerings, that helps address economic and access requirements of many traditional IT workloads. Low capacity drives also help address architecture limitations. The Ultrastar 7K6 is designed for traditional storage and server applications as well as distributed and scalable computing, including block and file storage architectures, providing fast 7,200 RPM performance and lower acquisition cost to help ease budget constraints. Ultrastar 7K6 is offered with either 6Gb/s SATA or 12Gb/s SAS interface in a choice of 512e or 4Kn formats. 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 7K6 is based on a new 4-disk air platform design that uses conventional magnetic recording (CMR) technology in a 3.5-inch large form factor. Compared to the prior generation, Ultrastar 7K6000, the 7K6 delivers a 12% performance boost and uses slightly larger-diameter media. It features a second-generation, dual-stage micro actuator 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, which also improves reliability and data integrity during unexpected power loss. Finally, the addition of flash-based non-volatile cache (NVC) on both SATA and SAS models helps improve write performance. The Ultrastar 7K6 also includes a Rebuild Assist feature, which helps dramatically reduce RAID rebuild times and maintain system performance during the rebuild process. Learn more in our Rebuild Assist technical brief.

Data Security with Trusted Quality, Reliability
Compliance and privacy requirements drive the need for increased data security. Ultrastar 7K6 helps protect data from unauthorized use by offering security and encryption options. SAS models offer hardware-based encryption options, including a Trusted Computing Group (TCG) Enterprise_A, TCG with FIPS 140-2 certification, Level 2. The Ultrastar 7K6 extends Western Digital’s long-standing tradition of reliability leadership with a 2M-hour MTBF2 rating.



  • Interface :  SATA 6Gb/s
  • Bytes per Sector :  4096
  • Buffer Size :  256 MB
  • Weight :  25.22 oz
  • Manufacturer :  Western Digital Corp.


  • MTBF :  2000000 hour(s)
  • Warranty  : 5-year warranty


  • Form Factor :  3.5″
  • Spindle Speed :  7200 rpm
  • Hard Drive Type :  internal hard drive
  • Form Factor (Short) :  3.5″
  • Form Factor (metric) :  8.9 cm
  • Form Factor (Short) (metric) :  8.9 cm
  • Storage Interface :  Serial ATA-600
  • Interface:  Serial ATA-600
  • Average Seek Time :  8 ms
  • Max Seek Time :  8.6 ms
  • Average Latency :  4.16 ms
  • Data Transfer Rate : 600 MBps
  • Internal Data Rate :  226 MBps
  • Buffer Size :  256 MB
  • Bytes per Sector :  4096 Hz
  • Non-Recoverable Errors :  1 per 10^15
  • Load / Unload Cycles :  600,000
  • Drive Transfer Rate : 600 MBps (external)


  • Min Storage Temperature   :  -40 °F
  • Max Storage Temperature  :   158 °F
  • Min Operating Temperature  :  41 °F
  • Max Operating Temperature  :  140 °F


  • 5.9 Watt, 7 Watt


  • Shock Acceleration (Operating)  :  70 g
  • Shock Duration (Operating)  :  2 ms half-sine wave
  • Shock Acceleration (Non-operating)  : 300 g
  • Shock Duration (Non-operating)  :  2 ms half-sine wave
  • Vibration Acceleration (Operating)  :  0.67 g
  • Vibration Frequency Range (Operating)  :  5-500 Hz
  • Vibration Acceleration (Non-operating)  :  1.04 g
  • Vibration Frequency Range (Non-operating)  :2-200 Hz

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