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Silver 2.5 inch bare drive with SAS connector

HGST

HGST 0B25095 450GB 10000 RPM SAS 6Gb/s 2.5" laptop hard drive

SKU CH-0KX8-22Y48 MPN 0B25095

Enterprise 2.5" SAS drive delivers 450 GB at 10,000 RPM with 64 MB cache and 3.7 ms seek time

  • Total capacity450 GB
  • Interface typeSAS 6Gb/s
  • Form factor2.5 in (6.35 cm)
  • Packaging typeBare Drive
  • Cache memory64 MB
  • Average seek time3.7 ms
  • 10,000 RPM enables low-latency data access
  • 64MB cache buffer manages data efficiently
  • SAS 6Gb/s dual-port interface provides enhanced reliability
  • Advanced power management reduces enterprise power requirements
  • Rotational Vibration Safeguard maintains performance in multi-drive systems

Enterprise storage drive

The HGST Ultrastar 0B25095 is a 450GB 2.5-inch laptop internal hard drive spinning at 10000 RPM with a SAS 6Gb/s interface. It delivers enterprise-class performance in a compact form factor with 64MB cache and advanced power management for lower power requirements. The bare drive includes Rotational Vibration Safeguard and workload detector technology for multi-drive environments.

Transactional workloads and RAID arrays

This drive suits administrators deploying high-IOPS storage for databases, virtualisation hosts or transactional applications where low latency matters. The dual-port SAS interface provides path redundancy for enhanced reliability in enterprise arrays. Buyers needing larger capacity for archival storage or sequential throughput should consider higher-capacity alternatives.

10000 RPM spindle speed

The 10000 RPM rotation rate determines the drive's average seek time of 3.7ms and average latency of 3ms, which directly govern random I/O performance. This specification decides whether the drive meets the response-time requirements of your workload. If your application prioritises capacity over latency, a different spindle speed may be more appropriate.

How it compares

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

Price $292.99
Pricier than about 90% of the 645 comparable items (median $66.99).
Total capacity 450 GB
Higher than about 57% of the 419 comparable items (median 320 GB).
Price per TB $651.09 per TB
Pricier than about 82% of the 416 comparable items (median $233.48 per TB).

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Specifications

Product
Brand nameHGST
Product lineUltrastar
Model name0B25095
Total capacity450 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 weight0.20 kg
Package size114 × 70 × 13 mm

Questions about this item

What limits the HGST Ultrastar 0B25095 during sustained 10000 RPM operation?

The 3.7 ms average seek time and 3 ms average latency set the mechanical response floor for continuous workloads.

How much heat and noise does the 2.5 inch SAS drive produce when running all day?

Advanced power management lowers power draw, while Rotational Vibration Safeguard keeps acoustics stable in multi-drive systems.

Which controller or backplane must I already have for this 450GB SAS drive to work?

A SAS 6Gb/s dual-port host bus adapter or RAID controller with a 2.5 inch drive bay is required.

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