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Silver 3.5-inch internal hard drive with SAS connector

HP

HP M0S90A 8TB 7200 RPM SAS 12Gb/s 3.5" internal hard drive

SKU CH-K1K4-HHZHK MPN M0S90A

High-capacity 8 TB internal drive with 7200 RPM SAS 12Gb/s interface for HP MSA arrays

  • Total capacity8 TB
  • Interface typeSAS 12Gb/s
  • Form factor3.5 in (8.89 cm)
  • Flash memory typeSLC
  • Rotational speed7,200 RPM
  • Mean latency12Gb/s
  • 8 TB capacity supports large data sets
  • 7200 RPM spindle speed delivers responsive throughput
  • SAS 12Gb/s interface enables fast host transfers
  • 5-inch form factor fits standard drive bays
  • Compatible with HP MSA 1040 and 2040 arrays

8 TB SAS drive for array expansion

The HP M0S90A provides 8 TB of storage on a 3.5 inch form factor with a SAS 12Gb/s interface. It spins at 7200 RPM and uses 512e sector formatting. The drive is built for HP MSA 1040 and MSA 2040 storage arrays.

SAS 12Gb/s bus caps sustained throughput

The 12Gb/s SAS link sets the maximum interface bandwidth for this drive. Real-world sustained transfer rates are limited by the 7200 RPM mechanical speed and the 512e sector structure. The interface cannot overcome the physical latency of rotating media.

Replaces smaller SAS drives in MSA arrays

This drive upgrades capacity in existing HP MSA 1040 or MSA 2040 enclosures that accept 3.5 inch SAS modules. The jump is worth it when current volumes hit capacity limits and the array firmware supports 8 TB LUNs. It does not add a second controller or change the RAID level.

How it compares

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

Price $992.99
Pricier than about 90% of the 4,938 comparable items (median $107.99).
Total capacity 8 TB
Higher than about 80% of the 2,372 comparable items (median 2 TB).
Price per TB $124.12 per TB
Pricier than about 68% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameHP
Model nameM0S90A
Total capacity8 TB
Performance
Rotational speed7,200 RPM
Mean latency12Gb/s
Storage
Flash memory typeSLC
Ports & slots
Interface typeSAS 12Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight1.09 kg
Package size315 × 213 × 142 mm

Questions about this item

Should I choose the 8TB capacity or is a smaller size available for this M0S90A drive?

This model is offered only in the 8TB capacity. If you need a different size, you would have to select a different part number from the HP MSA range.

What does the 7200 RPM spindle speed mean for daily workloads on this drive?

The 7200 RPM rotation delivers consistent throughput for sequential reads and writes, making it suitable for bulk storage, backup targets and nearline access in MSA arrays.

How does the SAS 12Gb/s interface limit real-world transfer rates on this 3.5" drive?

The 12Gb/s SAS link caps the interface burst at 12Gb/s, but sustained throughput will be lower and depends on the 7200 RPM mechanical speed and the controller in your MSA 1040 or 2040.

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