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Silver 3.5 inch bare enterprise hard drive with exposed circuit board

HGST

HGST Ultrastar 7K4000 0B26885 4TB 7200 RPM SAS 6Gb/s 3.5" internal hard drive

SKU CH-CYWK-VWXQE MPN 0B26885

A 4 TB 3.5" enterprise hard drive spinning at 7200 RPM with a 64 MB cache, SAS 6Gb/s interface and a 2.0 million-hour MTBF rating

  • Total capacity4 TB
  • Interface typeSAS 6Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Cache memory64 MB

Model 4TB SAS 6Gb/s

  • Enterprise reliability with 2.0 million hours MTBF
  • 7200 RPM performance for demanding workloads
  • 4TB capacity for large-scale storage needs
  • SAS 6Gb/s interface for fast data transfer
  • Dual Stage Actuator and RVS for multi-drive stability

Enterprise capacity drive

The HGST Ultrastar 7K4000 0B26885 is a 4TB 3.5-inch internal hard drive built for enterprise storage arrays and servers. It spins at 7200 RPM with a 64MB cache and connects through a SAS 6Gb/s interface. The bare-drive unit carries a 2.0 million hour MTBF rating for 24x7 operation.

SAS installation notes

The drive fits standard 3.5-inch bays with a maximum height of 26.1mm and uses the SAS 6Gb/s connector for power and data. A compatible SAS backplane or controller is required; SATA-only controllers will not recognise the drive. Dual Stage Actuator and Enhanced Rotational Vibration Safeguard help maintain performance in multi-drive chassis.

Pre-order checklist

Verify that your system provides SAS 6Gb/s ports and that the enclosure can supply adequate cooling for continuous enterprise workloads. Confirm the operating system supports 512e Advanced Format sectors if you plan to use the SATA-model variant. Buyers needing SATA-native connectivity or non-enterprise firmware should consider other models.

How it compares

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

Price $284.99
Pricier than about 81% of the 4,938 comparable items (median $107.99).
Total capacity 4 TB
Higher than about 70% of the 2,372 comparable items (median 2 TB).
Price per TB $71.25 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 7K4000
Model nameHUS724040ALS640 (0B26885)
Total capacity4 TB
Recommended useFor Enterprise Storage
Performance
Rotational speed7,200 RPM
Mean latency6Gb/s
Storage
Cache memory64 MB
Ports & slots
Interface typeSAS 6Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height26.1 mm
Shipping weight0.69 kg
Package size145 × 102 × 25 mm

Other versions of this model

4 more in the same range

Questions about this item

How can I verify the drive is operating correctly after installation?

Check that the controller reports a SAS 6Gb/s link, the firmware identifies the model as HUS724040ALS640, and SMART attributes show zero reallocated sectors.

What does the bare-drive package include and what must I source separately?

Only the 3.5" drive itself is supplied; you need a SAS cable, a compatible backplane or HBA, mounting screws, and a 12 V / 5 V power connector.

Which capacity and interface variant should I choose for a 24/7 enterprise array?

This 4TB SAS 6Gb/s model with 64MB cache and 2.0 million hours MTBF is built for continuous enterprise workloads.

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