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Silver 3.5 inch enterprise hard drive with HGST label

HGST

HGST Ultrastar 7K4000 2TB SAS 6Gb/s 3.5" 7200 RPM 64 MB cache internal hard drive

SKU CH-K2CJ-4R9J4

Enterprise 2TB SAS hard drive with 7200 RPM, 64 MB cache and 2.0 million hours MTBF for 24x7 workloads

  • Total capacity2 TB
  • Interface typeSAS 6Gb/s
  • Form factor3.5 in (8.89 cm)
  • Rotational speed7,200 RPM
  • Cache memory64 MB
  • Average seek time8.0 ms
  • Enterprise-grade 2.0 million hours MTBF reliability
  • 7200 RPM performance with 8.0ms average seek time
  • 64 MB cache boosts data throughput efficiency
  • SAS 6Gb/s interface ensures fast enterprise connectivity
  • Rotational Vibration Safeguard maintains stability in RAID arrays

Enterprise SAS 2 TB drive

The HGST Ultrastar 7K4000 is a 2 TB enterprise hard drive built for 24x7 operation in data centres and NAS arrays. It spins at 7200 RPM with a 64 MB cache and connects through a SAS 6Gb/s interface. The 3.5 inch form factor fits standard server bays and the drive carries a 2.0 million hours MTBF rating.

Suits RAID and cloud workloads, not laptop upgrades

This drive targets cloud storage, massive scale-out, data warehousing, disk-to-disk backup and RAID deployments that demand continuous uptime. Features such as Rotational Vibration Safeguard, Dual Stage Actuator and Thermal Fly-height Control protect data integrity in multi-drive enclosures. It is not designed for portable devices or systems lacking a SAS controller.

SAS 6Gb/s interface decides compatibility

The single specification that determines fit is the SAS 6Gb/s interface; the host must provide a matching SAS backplane or HBA. Average seek time is 8.0ms and the model number is HUS724020ALS641. Encryption and SMART command transport are included for managed environments.

How it compares

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

Price $68.99
Cheaper than about 65% of the 4,938 comparable items (median $107.99).
Total capacity 2 TB
Typical for this category: the median of 2,372 items is 2 TB.
Price per TB $34.50 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 7K4000
Model name0B26928
Total capacity2 TB
Performance
Rotational speed7,200 RPM
Average seek time8.0 ms
Storage
Cache memory64 MB
Ports & slots
Interface typeSAS 6Gb/s
Size & build
Form factor3.5 in (8.89 cm)

Questions about this item

What controller do I need for the SAS 6Gb/s interface on this Ultrastar 7K4000?

A compatible SAS HBA or RAID controller with the appropriate cable and backplane is required for the SAS 6Gb/s interface.

Will the 24x7 accessibility rating and Rotational Vibration Safeguard handle mixed workloads with older drives in a RAID array?

The 24x7 accessibility rating and Rotational Vibration Safeguard are designed for robust performance in RAID arrays and enterprise environments.

How do I verify the 8.0ms average seek time and 2.0 million hours MTBF are performing as expected after installation?

Use SMART command transport to monitor drive health, seek performance, and error rates against the 8.0ms average seek time and 2.0 million hours MTBF specifications.

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