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Silver 2.5 inch 15mm enterprise hard drive bare unit

HGST

HGST Ultrastar C10K1800 HUC101890CSS200 900GB 10520 RPM SAS 12Gb/s 2.5" laptop hard drive

SKU CH-5AYG-69V3K

2.5-inch 10520 RPM enterprise drive with 900GB capacity, 128MB cache and SAS 12Gb/s interface for high-performance storage

  • Total capacity900 GB
  • Interface typeSAS 12Gb/s
  • Form factor2.5 in (6.35 cm)
  • Packaging typeBare Drive
  • Cache memory128 MB
  • Average seek time3.3-3.5 ms

Capacity 900GB

Model SAS ULTRA 512N ISE

  • 10520 RPM spindle delivers fast data access for enterprise workloads
  • 128 MB cache buffers bursts to sustain throughput
  • SAS 12 Gb/s interface provides high-bandwidth connectivity
  • 900 GB capacity stores large datasets in a 2.5 inch form factor
  • 15 mm z-height fits standard enterprise drive bays

Enterprise Laptop Drive 900GB

The HGST Ultrastar C10K1800 HUC101890CSS200 is a new 900GB 2.5 inch enterprise hard drive spinning at 10520 RPM with a 128MB cache. It connects via SAS 12Gb/s and fits a 15mm high bay. The bare drive delivers 1.8TB class capacity density in a 10K RPM design.

Suits High IOPS Workloads

This drive suits servers and storage arrays that need low average latency of 2.85ms and fast seek times of 3.3 to 3.5ms for random access. Buyers who need a larger single drive capacity than 900GB or a different physical interface should look elsewhere.

SAS 12Gb/s Interface Decides Fit

The single specification that decides compatibility is the SAS 12Gb/s interface, which requires a matching controller or backplane. Without SAS 12Gb/s support the drive cannot be used, regardless of its 2.5 inch form factor or 15mm height.

How it compares

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

Price $51.99
Cheaper than about 65% of the 645 comparable items (median $66.99).
Total capacity 900 GB
Higher than about 86% of the 419 comparable items (median 320 GB).
Price per TB $57.77 per TB
Cheaper than about 91% of the 416 comparable items (median $233.48 per TB).

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Specifications

Product
Brand nameHGST
Product lineUltrastar C10K1800
Model nameHUC101890CSS200 (0B27976)
Total capacity900 GB
VariantSAS ULTRA 512N ISE
Performance
Average seek time3.3-3.5 ms
Mean write time3.8-4.2 ms
Mean latency2.85 ms
Rotational speed10,520 RPM
Storage
Cache memory128 MB
Ports & slots
Interface typeSAS 12Gb/s
Size & build
Form factor2.5 in (6.35 cm)
Max height15 mm
Maximum width70.1 mm
Maximum length100.45 mm

Other versions of this model

4 more in the same range

Questions about this item

My server backplane only accepts 15mm 2.5" drives — will this 15mm SAS unit seat correctly?

The drive is built to the 15mm maximum height for 2.5" enterprise bays and uses the standard SAS connector, so it seats directly in any backplane that accepts 15mm SAS drives.

Can I mix this 10520 RPM SAS drive with older 10K SAS disks on the same controller?

Yes — the 12Gb/s SAS interface negotiates down to 6Gb/s or 3Gb/s, allowing the 900GB 10520 RPM drive to share a controller with earlier 10K SAS models.

How do I confirm the 128MB cache and 12Gb/s link are active after installation?

Check the controller BIOS or OS utility for a reported 12Gb/s negotiated speed and 128MB cache size; the drive also reports 10520 RPM and 2.85ms average latency when queried via SMART.

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