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Silver 2.5 inch internal hard drive with label showing HGST Ultrastar C10K900 900 GB 10000 RPM SAS

HGST

HGST HUC109090CSS600 900 GB 2.5" 10000 RPM SAS laptop hard drive

SKU CH-C5NT-1RFKD MPN HUC109090CSS600

A 2.5-inch 10,000 RPM SAS hard drive with 900 GB capacity and a 64 MB cache buffer

  • Interface typeSAS
  • Cache memory64 MB
  • Rotational speed10,000 RPM
  • 10000 RPM spindle speeds up transactional workloads
  • 64 MB cache buffer optimises read and write response
  • SAS 6Gb/s interface provides reliable data transfer
  • 900 GB capacity stores large datasets in 2.5 inch form
  • REACH and RoHS compliance meets environmental standards

Ultrastar C10K900 900 GB SAS Drive

This HGST Ultrastar C10K900 is a 2.5-inch internal hard drive with a 10000 RPM spindle speed and a 6Gb/s SAS interface. It offers 900 GB of storage and a 64MB cache buffer for optimized read and write response times. The drive is designed for high-performance enterprise environments requiring fast sequential and random data access. It arrives in new condition with retail or OEM packaging.

Suits SAS Systems Needing 10K Speed

This drive suits servers or workstations with a 6Gb/s SAS backplane that require 10000 RPM performance in a 2.5-inch form factor. It fits applications demanding high IOPS and low latency from mechanical storage. Buyers needing larger capacity per drive or solid-state latency should look at alternative storage technologies. Systems without a SAS controller or backplane cannot use this drive.

10000 RPM Spindle Speed Decides Fit

The 10000 RPM spindle speed is the primary specification determining if this drive meets your performance requirements. It delivers 18% faster sequential and up to 17% random performance over competing 10K drives. This rotational speed defines the drive's IOPS capability and access latency profile. Verify your workload demands 10K RPM performance before selecting this model.

How it compares

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

Price $63.99
Typical for this category: the median of 645 items is $66.99.

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Specifications

Product
Brand nameHGST
Product lineUltra
Performance
Rotational speed10,000 RPM
Storage
Cache memory64 MB
Ports & slots
Interface typeSAS

Questions about this item

What does the 6Gb/s SAS interface cap in practice?

The 6Gb/s SAS interface limits the maximum transfer rate to 6 gigabits per second, which translates to roughly 600 megabytes per second in real-world throughput.

What are the exact height and width measurements for the 2.5-inch form factor?

The drive measures .6 inches in height and 2.8 inches in width, matching the standard 2.5-inch small form factor used in laptops and servers.

How is this SAS drive installed, and what step do people often get wrong?

Connect the combined SAS data and power connector to the backplane or controller; the common mistake is forgetting to configure the drive in the RAID or HBA BIOS before the operating system loads.

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