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Small silver 2.5 inch enterprise SAS hard drive bare unit

HGST

HGST 0B23909 600GB 10000 RPM 64MB SAS 6Gb/s 2.5" laptop hard drive

SKU CH-5D8C-BRD91 MPN 0B23909

A 600GB 10000 RPM SAS enterprise drive with 64MB cache and 3.7ms seek time in a 2.5" form factor

  • Total capacity600 GB
  • Interface typeSAS 6Gb/s
  • Form factor2.5 in (6.35 cm)
  • Packaging typeBare Drive
  • Cache memory64 MB
  • Average seek time3.7 ms
  • 10000 RPM delivers 3.7ms seek time for rapid data access
  • 64MB cache buffer manages data efficiently during heavy workloads
  • SAS 6Gb/s dual-port interface provides fast, reliable connectivity
  • 600GB capacity fits in a 2.5 inch form factor for space savings
  • Advanced power management reduces energy use while maintaining enterprise performance

Enterprise 2.5" SAS Drive

The HGST Ultrastar 0B23909 is a 600GB 10000 RPM laptop internal hard drive with a SAS 6Gb/s interface and 64MB cache. Designed for enterprise environments, it delivers low latency and high reliability in a 2.5 inch bare drive form factor. Advanced power management reduces energy requirements while maintaining performance.

Suited For And Not For

This drive suits server and storage array builders who need dual-port SAS connectivity, rotational vibration safeguards, and consistent 10000 RPM throughput for RAID deployments. It is not for users whose laptop or enclosure only accepts a single-port consumer interface, nor for workloads demanding capacities above 600GB or silent solid-state operation.

Deciding Specification

The SAS 6Gb/s dual-port interface is the single specification that determines compatibility; the host system must provide a matching SAS backplane or controller to utilise the drive. Without that enterprise connection the drive cannot function, regardless of its 3.7ms seek time or 64MB buffer.

How it compares

Measured against everything we stock in 2.5-Inch Internal Laptop HDDs, at today’s prices. Recalculated every night.

Price $375.99
Pricier than about 90% of the 645 comparable items (median $66.99).
Total capacity 600 GB
Higher than about 74% of the 419 comparable items (median 320 GB).
Price per TB $626.65 per TB
Pricier than about 82% of the 416 comparable items (median $233.48 per TB).

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Specifications

Product
Brand nameHitachi GST
Product lineUltrastar
Model name0B23909
Total capacity600 GB
Performance
Average seek time3.7 ms
Mean latency3 ms
Rotational speed10,000 RPM
Storage
Cache memory64 MB
Ports & slots
Interface typeSAS 6Gb/s
Size & build
Form factor2.5 in (6.35 cm)
Shipping weight0.23 kg
Package size102 × 70 × 19 mm

Questions about this item

Does the HGST 0B23909 include cables, brackets or mounting screws in the bare-drive package?

The 0B23909 ships as a bare 2.5" drive only; no data cables, mounting brackets or screws are included and must be sourced separately.

Which capacity of the Ultrastar 0B23909 series should I choose for a 10 000 RPM SAS laptop drive?

This model is offered in a single 600 GB capacity, so the choice is fixed at 600 GB for the 10 000 RPM SAS 6 Gb/s specification.

What does the 3.7 ms average seek time mean for real-world access speed on this 10 000 RPM drive?

A 3.7 ms average seek time combined with 3 ms average latency gives low-latency random access, suited to transactional workloads on the 600 GB SAS 6 Gb/s platform.

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