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Hitachi 12000GB (12TB) 7200RPM SAS 12b/s 512e ISE w. 256MB Cache - Ultrastar HE12

  • High Capacity 12TB PMR HDD, drop-in ready for capacity workloads
  • Low Power 52% lower idle W/TB than 8TB Ultrastar air-filled drives
  • More Reliable Highest MTBF rating for an HDD at 2.5M hours

Laying the foundation for a worry-free data center, HGST delivers capacity to conquer the data explosion Ultrastar He12 HDD. Designed to handle workloads up to 550TB per year, the Ultrastar He12 HDD is the industrys first 12TB drive and uses PMR technology to make it drop-in ready for any enterprise-capacity application or environment. The stable internal environment created by fourth-generation HelioSeal technology enables a new 8-disk design, increasing the capacity by 20% when compared to the 7-disk design of the prior generation. This highest capacity helium drive offers one of the lowest power profiles in the industry to help data center architects meet eco-environmental goals and requirements. Targeted at 2.5M hours MTBF, the Ultrastar He12 HDD provides the highest reliability rating available of all HDDs on the market today by building on the successful design of its 10TB, 8TB and 6TB predecessors. Trust HGST and the Ultrastar He12 HDD to deliver more capacity, more efficiency, more reliability and more value to your data center.


  • SAS 12Gb/s
Capacity (GB)
  • 12TB
Sector Size (Variable, Bytes/sector)
  • 512e: 512, 520, 528
Max Areal Density (Gbits/sq. in.)
  • 864
Data Buffer (MB)
  • 256
Rotational Speed (RPM)
  • 7200
Latency Average (ms)
  • 4.16
Interface Transfer Rate (MB/sec, max)
  • 1200
Sustained Transfer Rate (MB/sec, typ.)
  • 243MiB/s
  • 255MB/s
Seek Time (read, ms, typical)
  • 8.0 (Read) / 8.6 (Write)
Error Rate (non-recoverable, bits read)
  • 1 in 10^15
MTBF (M hours)
  • 2.5
Annual Failure Rate (AFR)
  • 0.35%
Load/Unload Cycles
  • 600,000
Availability (hrs/day x days/wk)
  • 24x7
Limited Warranty (yrs)
  • 5
Idle (Bels)
  • 2.0 (Idle) / 3.6 (Operating)
  • +5 VDC, +12VDC
Operating (W, typical)
  • 10.1
Idle (W)
  • 6.1
Power Consump. Efficiency Index (W/GB)
  • 0.51W/TB
  • 0.00051W/GB
Physical Size
Z-Height (mm)
  • 26.1
Dimensions (width x depth, mm)
  • 101.6 (+/-0.25) x 147
Weight (g, max)
  • 660
Environmental (operating)
Ambient Temperature
  • 5 to 60 C
Shock (half-sine wave)
  • 70
Vibration (5 to 500 Hz)
  • 0.67G RMS (XYZ)
Environmental (non-operating)
Ambient Temperature
  • -40 to 70 C
Shock (half-sine wave)
  • 300 (2ms) / 150 (11ms)
Random vibration (G RMS 2 to 200 Hz)
  • 1.04 (XYZ)

No additional files, specification sheets, guides or documentation found for product.

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