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Silver 3.5 inch bare hard drive with exposed circuit board and SATA connectors

HGST

HGST 0B36404 Ultrastar DC HC320 8TB 7200 RPM SATA 6.0Gb/s 256MB Cache 3.5" Internal Hard Drive

SKU CH-8ZYG-ZBTPH MPN 0B36404

An 8 TB 3.5-inch enterprise hard drive with a 7200 RPM spindle, 256 MB cache and a SATA 6.0 Gb/s interface delivering up to 255 MB/s sustained transfer

  • PackagingBare Drive
  • InterfaceSATA 6.0Gb/s
  • Capacity8TB
  • RPM7200 RPM
  • Cache256MB
  • Average Seek Time8ms

Options 8TB

  • 8TB capacity stores large datasets and backups
  • 7200 RPM with 256MB cache delivers fast data access
  • SATA 6.0Gb/s interface integrates with standard systems
  • 255MB/s sustained transfer rate speeds sequential workloads
  • Enterprise-class design built for continuous operation

Enterprise 8TB SATA Drive

The HGST Ultrastar DC HC320 is a 3.5-inch internal hard drive built for enterprise storage systems. It delivers 8TB of capacity through a SATA 6.0Gb/s interface with a 256MB cache buffer. The drive spins at 7200 RPM and achieves sustained transfer rates up to 255MB/s.

Suited For High-Capacity Arrays

This drive suits IT environments needing large volumes of reliable bulk storage in standard 3.5-inch bays. Its 4Kn and 512e advanced format support ensures compatibility with traditional infrastructure. Buyers needing faster random access, lower latency or smaller 2.5-inch form factors should evaluate solid-state alternatives.

7200 RPM Mechanical Speed

The 7200 RPM spindle speed defines the drive's performance envelope for sequential throughput and access latency. Average seek time is 8ms with 4.16ms average latency. This rotational speed makes the drive appropriate for nearline workloads where cost per terabyte outweighs the low-latency demands of transactional databases.

Highlights

  • 8TB capacity stores large datasets and backups
  • 7200 RPM with 256MB cache delivers fast data access
  • SATA 6.0Gb/s interface integrates with standard systems
  • 255MB/s sustained transfer rate speeds sequential workloads
  • Enterprise-class design built for continuous operation

Specifications

BrandWD
SeriesUltrastar DC HC320
Model0B36404
PackagingBare Drive
InterfaceSATA 6.0Gb/s
Capacity8TB
RPM7200 RPM
Cache256MB
Average Seek Time8ms
Average Write Time8.6ms
Average Latency4.16ms
FeaturesExcellent random and sequential performance
8TB capacity point supports traditional IT systems
Sustained transfer rate up to 255MB/s
Advanced Format 4Kn and 512e models
Self-Encrypting Drive (TCG SAS) options
UsageFor Enterprise Storage
Form Factor3.5"
Height (maximum)26.10mm
Width (maximum)101.60mm
Length (maximum)147.00mm
Shipping weight0.72 kg
Package size197 × 146 × 3 mm

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Questions about this item

What type of SATA port does the 0B36404 need to reach its 255MB/s sustained transfer rate?

The drive uses a SATA 6.0Gb/s interface to achieve up to 255MB/s sustained transfer rate.

Will the 3.5-inch form factor and 26.10mm height fit in the same drive bays as older 3.5-inch enterprise drives?

Yes, the 3.5-inch form factor with 26.10mm height matches standard enterprise drive bay dimensions.

How can I verify the 7200 RPM spindle speed and 256MB cache are active after installation?

Check the drive identification in your BIOS or OS disk utility; it will report 7200 RPM and 256MB cache for model 0B36404.

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