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Silver 3.5-inch bare hard drive with exposed circuit board

HGST

HGST Ultrastar He6 0F18370 6TB 7200 RPM 64MB SAS 6Gb/s 3.5" internal hard drive

SKU CH-930E-GC669 MPN 0F18370

Helium-sealed 6 TB enterprise drive with 7200 RPM, 64 MB cache and SAS 6Gb/s interface

  • Total capacity6 TB
  • Interface typeSAS 6Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Cache memory64 MB
  • World's first helium-filled drive enables higher capacity in standard 3.5-inch form factor
  • HelioSeal hermetic sealing with 7Stac design delivers 6TB capacity within 26.1mm height
  • 7200 RPM and 64MB cache provide responsive performance for nearline storage workloads
  • SAS 6Gb/s interface supports dual-port connectivity for enterprise server deployments
  • TCO-optimised design reduces power and cooling demands in high-density data centres

6TB Helium SAS Drive for Servers

The HGST Ultrastar He6 HUS726060ALS640 is a 6TB 3.5-inch internal hard drive built for server deployments. It uses a SAS 6Gb/s interface and spins at 7200 RPM with 64MB cache. The helium-filled design enables the industry-first 6TB capacity in the standard form factor.

SAS 6Gb/s Interface Limits

The SAS 6Gb/s link caps sustained throughput at the interface ceiling rather than the mechanical speed of the platters. Average seek time is 8.5ms. The drive fits standard 3.5-inch bays with maximum dimensions of 26.1mm height, 101.6mm width and 147mm length.

Upgrade from Lower-Capacity Air Drives

This drive replaces 3.5-inch air-filled enterprise drives below 6TB where rack density and power per terabyte matter. The helium platform reduces drag and heat, improving storage density in nearline and bulk-storage workloads. Buyers who need more than 6TB per spindle or a different interface will need a different model.

How it compares

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

Price $371.99
Pricier than about 88% of the 4,938 comparable items (median $107.99).
Total capacity 6 TB
Higher than about 75% of the 2,372 comparable items (median 2 TB).
Price per TB $62.00 per TB
Typical for this category: the median of 2,365 items is $62.21 per TB.

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Specifications

Product
Brand nameHGST
Product lineUltrastar He6
Model nameHUS726060ALS640 (0F18370)
Total capacity6 TB
Recommended useIdeal for Servers
Performance
Rotational speed7,200 RPM
Average seek time8.5 ms
Storage
Cache memory64 MB
Ports & slots
Interface typeSAS 6Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height26.1 mm
Maximum width101.6(+/-0.25)mm
Maximum length147 mm
Shipping weight1.36 kg
Package size229 × 152 × 76 mm

Questions about this item

Should I pick the 6TB helium-filled model or a smaller air-filled drive for my server?

The 6TB helium-filled Ultrastar He6 uses HelioSeal and 7Stac design to fit industry-first capacity in a standard 3.5-inch form factor, reducing power and cooling needs for high-density racks.

What does the 7200 RPM rating deliver in a real server workload?

7200 RPM with 64MB cache and 8.5ms average seek time provides consistent throughput for nearline and bulk-storage tiers in massive scale-out environments.

Will the SAS 6Gb/s interface bottleneck my HBA or backplane?

The SAS 6Gb/s link caps at 6 Gbit/s per port, so aggregate throughput depends on your controller lanes and backplane width rather than the drive itself.

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