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Silver 3.5 inch enterprise hard drive with SAS connector

Seagate

Seagate ST4000NM025B 4TB SAS 12Gb/s 7200RPM 256MB 3.5" internal hard drive

SKU CH-MYZN-Q9989 MPN ST4000NM025B

Enterprise SAS drive stores 4TB at 7200RPM with 256MB cache for 24/7 NAS workloads

  • Total capacity4 TB
  • Interface typeSAS 12Gb/s
  • Form factor3.5 in (8.89 cm)
  • Flash memory typeSLC
  • Rotational speed7,200 RPM
  • Cache memory256 MB
  • 4TB capacity stores large enterprise datasets
  • SAS 12Gb/s interface enables fast data transfer
  • 7200 RPM spindle speed delivers responsive performance
  • 256MB cache buffers intensive workloads
  • 5-inch form factor fits standard drive bays

Enterprise 4 TB SAS drive

The Seagate Exos 7E10 ST4000NM025B is a 3.5-inch enterprise hard drive built for 247 bulk-data workloads. It delivers 4 TB of capacity over a SAS 12Gb/s interface, spins at 7200 RPM and provides a 256 MB cache. The drive carries a 2 million hour MTBF rating and supports 550 TB per year of writes.

NAS and server builders

This drive suits administrators deploying high-capacity storage in NAS arrays or enterprise servers that require SAS connectivity and sustained throughput. It is not for desktop PCs or laptops that lack a SAS backplane or compatible host-bus adapter, nor for workloads that demand solid-state latency.

12 Gb/s SAS interface

The single specification that decides fit is the SAS 12Gb/s interface. Only systems with a SAS controller or backplane operating at 12 Gb/s can attach and run the drive at its rated speed.

How it compares

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

Price $143.99
Pricier than about 59% of the 4,938 comparable items (median $107.99).
Total capacity 4 TB
Higher than about 70% of the 2,372 comparable items (median 2 TB).
Price per TB $36.00 per TB
Cheaper than about 75% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Total capacity4 TB
Recommended useFor NAS systems
Performance
Rotational speed7,200 RPM
Storage
Flash memory typeSLC
Cache memory256 MB
Ports & slots
Interface typeSAS 12Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight0.70 kg
Package size140 × 100 × 20 mm

Questions about this item

How do I decide which capacity from the Exos 7E10 range to pick?

This drive is the 4 TB member of the series; choose it when you need that exact capacity for bulk data storage.

What does the 7200 RPM rating deliver once the drive is installed?

7200 RPM gives the spindle speed that supports the sustained throughput required for 24/7 enterprise workloads.

What does the SAS 12 Gb/s interface limit in practice?

The SAS 12 Gb/s link caps the maximum host transfer rate at 12 Gb/s.

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