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Silver 3.5 inch bare hard drive with exposed circuit board

HGST

HGST 0F25739 Ultrastar He8 8TB 7200 RPM 128MB SATA 6.0Gb/s 3.5" internal hard drive

SKU CH-65GD-5MGYF MPN 0F25739

Helium-sealed 8TB enterprise drive with 7200 RPM, 128MB cache and SATA 6.0Gb/s interface

  • Total capacity8 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Cache memory128 MB
  • 8TB capacity fits massive datasets in a standard 3.5" bay
  • 7200 RPM spindle delivers 8.5ms average seek for responsive data access
  • 128MB cache buffers bursts to sustain throughput on SATA 6.0Gb/s
  • HelioSeal helium platform cuts watts-per-TB for cooler, denser deployments
  • Rated for 550TB yearly workloads with Rebuild Assist to speed RAID recovery

Enterprise 8TB helium drive

The HGST Ultrastar He8 HUH728080ALE600 delivers 8TB of storage in a standard 3.5-inch form factor. It uses a SATA 6.0Gb/s interface and spins at 7200 RPM with a 128MB cache. Designed for enterprise storage, it handles workloads of up to 550TB per year. The helium-sealed platform reduces internal turbulence for consistent operation.

Thermals and power efficiency

HelioSeal technology enables the industry's best idle and active power efficiency measured in watts per terabyte. Lower power draw translates to reduced heat output in multi-drive enclosures. Average latency sits at 4.16ms while average seek time is 8.5ms. The 26.10mm height fits standard drive bays without special cooling requirements.

Upgrade from lower-capacity arrays

This drive replaces multiple smaller drives in RAID or JBOD configurations, cutting slot count and cabling. Rebuild Assist accelerates RAID rebuild times while maintaining system performance during the process. The jump is worth it when consolidating 4TB or 6TB units to gain density and lower watts per terabyte. It is not for systems limited to 512-byte sector addressing without 512e support.

How it compares

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

Price $273.99
Pricier than about 80% 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 $34.25 per TB
Cheaper than about 77% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameHGST
Product lineUltrastar He8
Model nameHUH728080ALE600 (0F25739)
Total capacity8 TB
Recommended useFor Enterprise Storage
Performance
Rotational speed7,200 RPM
Average seek time8.5 ms
Mean write time9 ms
Mean latency4.16 ms
Storage
Cache memory128 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 weight1.13 kg
Package size154 × 136 × 29 mm

Questions about this item

How do I install this 3.5" SATA 6.0Gb/s drive and what step is often missed?

Mount the bare drive in a 3.5" bay using the standard side screw holes, connect the SATA data cable to a 6.0Gb/s port and the SATA power cable, then ensure the host controller is set to AHCI mode so the 128MB cache and 7200 RPM performance are fully utilised.

What maintenance or replacement will the HelioSeal helium platform need later?

The sealed helium design requires no internal maintenance; plan replacement after the 550TB per year workload rating is reached or when SMART attributes indicate wear, as the HelioSeal process cannot be serviced in the field.

What limit appears first during sustained heavy writes on this enterprise drive?

The 550TB per year workload rating is the first sustained-use limit; exceeding it can accelerate wear beyond the 2nd generation HelioSeal and 7Stac design specifications.

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