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Silver 3.5 inch bare drive with exposed circuit board and SAS connector

HGST

HGST Ultrastar He8 0F23651 8TB 7200 RPM 128MB SAS 12Gb/s 3.5" internal hard drive

SKU CH-SEPT-ZGVMD MPN 0F23651

Helium-sealed enterprise drive delivers 8 TB at 7200 RPM with 128 MB cache and SAS 12Gb/s interface for high-density server storage

  • PackagingBare Drive
  • InterfaceSAS 12Gb/s
  • Capacity8TB
  • RPM7200 RPM
  • Cache128MB
  • Average Seek Time8.5ms
  • 8TB capacity in standard 3.5-inch form factor
  • 23% lower idle power than 6TB air drives
  • 44% more power efficient per terabyte
  • 7200 RPM with 128MB cache for responsive performance
  • SAS 12Gb/s interface for next-gen data-center compatibility

Enterprise capacity drive

The HGST Ultrastar He8 0F23651 is an 8TB 3.5-inch internal hard drive built for server and data-centre workloads. It spins at 7200 RPM with a 128MB cache and connects through a SAS 12Gb/s interface. Helium-filled HelioSeal technology and a 7Stac design deliver high capacity in the standard form factor.

33% capacity gain over 6TB

Compared with 6TB air-filled drives this model adds 33% more storage while cutting idle power by 23% and improving power efficiency by 44% in Watts per TB. The 12Gb/s SAS link ensures compatibility with next-generation data-centre controllers. Average seek time is 8.5ms and average latency is 4.16ms.

Suits hyperscale and distributed storage

Designed for cloud, hyperscale and massive scale-out environments running distributed file systems such as Ceph or Hadoop. Buyers needing SATA-only connectivity or a smaller 2.5-inch form factor should look elsewhere. Secure erase and self-encrypting drive options are available for deployments that require them.

Highlights

  • 8TB capacity in standard 3.5-inch form factor
  • 23% lower idle power than 6TB air drives
  • 44% more power efficient per terabyte
  • 7200 RPM with 128MB cache for responsive performance
  • SAS 12Gb/s interface for next-gen data-center compatibility

Specifications

BrandHGST
SeriesUltrastar He8
ModelHUH728080AL4200 (0F23651)
PackagingBare Drive
InterfaceSAS 12Gb/s
Capacity8TB
RPM7200 RPM
Cache128MB
Average Seek Time8.5ms
Average Write Time9ms
Average Latency4.16ms
FeaturesIndustry's leading 8TB capacity in a standard 3.5-inch form factor
Industry's best Idle and Active power efficiency (Watts/TB)
Reliable, field-proven, 2nd generation HelioSeal process and 7Stac design
Compared to 6TB air drives
- 33% more capacity
- 23% lower idle power
- 44% more power efficient (Watts/TB)
SATA 6Gb/s and SAS 12Gb/s
- 12Gb/s SAS provides compatibility with next gen data centers
2M hours MTBF rating & 5-year limited warranty
Secure erase & Self-Encrypting Drive (SED) options
Advanced format 4Kn and 512e models
Applications/Environments
- Enterprise and data center app
UsageIdeal for Servers
Form Factor3.5"
Height (maximum)26.1mm
Width (maximum)101.6(+/-0.25)mm
Length (maximum)147mm
Shipping weight1.13 kg
Package size305 × 229 × 102 mm

Questions about this item

Will the 3.5-inch form factor with 26.1mm height fit my standard server drive bay?

Yes, the drive uses a standard 3.5-inch form factor measuring 147mm long, 101.6mm wide and 26.1mm high, matching common server bays.

What is the correct way to connect the SAS 12Gb/s interface and the step installers often miss?

Attach a SAS 12Gb/s cable to the drive's dual-port connector and ensure the backplane or controller also runs at 12Gb/s; the common error is using a 6Gb/s link which halves the bus speed.

When should I expect to replace the drive given its 2M hour MTBF rating?

The 2M hour MTBF rating indicates high reliability for continuous enterprise use; plan replacement based on your workload and SMART monitoring rather than a fixed calendar interval.

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