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Silver 3.5-inch enterprise hard drive with bare circuit board visible

Seagate

Seagate ST900MP0146 900GB 15000 RPM SAS 12Gb/s 256MB internal hard drive

SKU CH-3PF1-TFE0P MPN ST900MP0146

900 GB enterprise hard drive with 15 000 RPM SAS 12 Gb/s interface and 256 MB cache

  • Total capacity900 GB
  • Interface typeSAS 12Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Flash memory typeHard Drive
  • Rotational speed15,000 RPM
  • Fast data access with 15000 RPM spindle speed
  • High throughput via SAS 12Gb/s interface
  • Large 256MB cache boosts burst performance
  • 900GB capacity fits enterprise workloads
  • 5-inch form factor for standard drive bays

900GB 15K SAS Enterprise Drive

This Seagate ST900MP0146 is a 900GB 3.5-inch internal hard drive built for enterprise storage workloads. It spins at 15000 RPM and connects through a SAS 12Gb/s interface with a 256MB cache. The drive is supplied as a bare unit in new condition. It targets servers and arrays that need sustained high-throughput performance.

Suits high-transaction servers.

The 15000 RPM spindle and SAS 12Gb/s link suit database clusters, virtualization hosts and other I/O-bound applications where low latency matters more than raw capacity. Buyers who need larger single-drive capacities or lower power draw should look at alternative form factors or speeds. This drive is not designed for desktop PCs or consumer NAS boxes that lack SAS controllers.

SAS 12Gb/s interface decides controller fit

The single specification that determines compatibility is the SAS 12Gb/s interface. Your backplane, HBA or RAID controller must support this exact protocol and speed for the drive to function. No other interface or speed is supported by this model.

How it compares

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

Price $195.99
Pricier than about 68% of the 4,938 comparable items (median $107.99).
Total capacity 900 GB
Lower than about 64% of the 2,372 comparable items (median 2 TB).
Price per TB $217.77 per TB
Pricier than about 80% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Model nameST900MP0146
Total capacity900 GB
Recommended useFor Enterprise Storage
Performance
Rotational speed15,000 RPM
Storage
Flash memory typeHard Drive
Cache memory256 MB
Ports & slots
Interface typeSAS 12Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight0.36 kg
Package size102 × 76 × 25 mm

Questions about this item

What throughput does the SAS 12Gb/s interface actually deliver?

The SAS 12Gb/s interface provides up to 12 Gbit/s bandwidth, though real-world sustained transfer depends on the 15000 RPM platters and 256MB cache.

What physical space and mounting does the 3.5-inch form factor require?

This drive fits a standard 3.5-inch internal bay and uses the industry-standard SAS connector for power and data.

How is the drive installed, and what step is often missed?

Mount the bare drive in a 3.5-inch bay, attach the SAS data and power cables, then ensure the controller firmware recognises the 4Kn/512e sector format before partitioning.

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