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Silver 3.5 inch bare hard drive with exposed circuit board on underside

HGST

HGST 0F23650 6TB 7200 RPM 128MB SAS 12Gb/s 3.5" internal hard drive

SKU CH-NMZM-JF5S8 MPN 0F23650

A 6 TB, 7200 RPM enterprise drive with a 128 MB cache and SAS 12Gb/s interface, built on a helium-sealed platform for high-capacity server storage

  • Total capacity6 TB
  • Interface typeSAS 12Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Cache memory128 MB
  • 6TB capacity in standard 3.5" form factor
  • 7200 RPM with 128MB cache for responsive performance
  • SAS 12Gb/s interface for enterprise compatibility
  • Helium-sealed design delivers 23% lower idle power
  • 2M hours MTBF rating for server reliability

Capacity and interface

This HGST Ultrastar He8 drive delivers 6TB of storage over a SAS 12Gb/s interface. It spins at 7200 RPM with a 128MB cache and uses a helium-sealed 3.5-inch form factor. The bare drive is designed for enterprise environments where capacity density and power efficiency are priorities. Average seek time is 8.5ms and average latency is 4.16ms.

Server and hyperscale suitability

It suits operators running cloud storage, massive scale-out data centres or distributed file systems such as Ceph and Hadoop. The helium platform provides 33% more capacity and 44% better power efficiency per terabyte than 6TB air drives. Buyers who need a SATA-only interface or a 512e format without SED options should look at something else.

SAS 12Gb/s interface

The single specification that decides fit is the SAS 12Gb/s interface, which provides compatibility with next-generation data centre controllers. Systems limited to SATA 6Gb/s cannot use this drive at its rated speed. Secure erase and Self-Encrypting Drive options are available on this model.

How it compares

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

Price $262.99
Pricier than about 79% 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 $43.83 per TB
Cheaper than about 66% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameHGST
Product lineUltrastar He8
Model nameHUH728060AL4200 (0F23650)
Total capacity6 TB
Recommended useIdeal for Servers
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 typeSAS 12Gb/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

What throughput does the SAS 12Gb/s interface cap at in practice?

The SAS 12Gb/s interface supports up to 12 Gbit/s raw throughput; real-world sustained transfer is limited by the 7200 RPM platters and 128 MB cache.

What are the exact 3.5-inch mounting dimensions for this drive?

The drive fits a standard 3.5-inch bay at 147 mm length, 101.6 mm width and 26.1 mm height.

How is the drive installed in a server chassis and what step is often missed?

Slide the bare drive into a 3.5-inch hot-swap tray, secure it with the tray screws, then insert the tray until the SAS connector seats firmly; the step often missed is fully engaging the tray latch so the dual-port SAS connector makes reliable contact.

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