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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

  • Total capacity8 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Cache memory256 MB

Capacity 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.

How it compares

Measured against everything we stock in 3.5-Inch Internal Desktop HDDs, at today’s prices. Recalculated every night.

Price $174.99
Pricier than about 64% of the 4,938 comparable items (median $107.99).
Total capacity 8 TB
Higher than about 80% of the 2,372 comparable items (median 2 TB).
Price per TB $21.87 per TB
Cheaper than about 91% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameWD
Product lineUltrastar DC HC320
Model name0B36404
Total capacity8 TB
Recommended useFor Enterprise Storage
Performance
Rotational speed7,200 RPM
Average seek time8 ms
Mean write time8.6 ms
Mean latency4.16 ms
Storage
Cache memory256 MB
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height26.1 mm
Maximum width101.6 mm
Maximum length147 mm
Shipping weight0.72 kg
Package size197 × 146 × 3 mm

Other versions of this model

4 more in the same range

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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