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Silver 3.5 inch bare enterprise hard drive with exposed circuit board

Seagate

Seagate ST2000NM004A 2TB 7200RPM 256MB SAS 3.5" internal hard drive

SKU CH-4268-HS1SB MPN ST2000NM004A

A 2 TB 3.5" enterprise hard drive with 7200 RPM, 256 MB cache and SAS 12Gb/s interface for 24×7 bulk data storage

  • Total capacity2 TB
  • Interface typeSAS 12Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Flash memory typeHard Drive
  • Rotational speed7,200 RPM

Model 2TB Standard Model

  • Enterprise-grade reliability for 24×7 workloads with 2M-hour MTBF
  • High-capacity bulk storage up to 2TB on 10th-gen CMR technology
  • Consistent RAID performance from 256MB cache and rotational vibration design
  • Fast 12Gb/s SAS interface for demanding enterprise data centres
  • Low latency 7200RPM operation with 4.16ms average access time

2 TB SAS enterprise drive

The Seagate Exos 7E8 ST2000NM004A is a 3.5-inch internal hard drive built for enterprise storage systems. It delivers 2 TB of capacity on a SAS 12Gb/s interface with a 7200 RPM spindle and 256 MB cache. The drive uses conventional magnetic recording technology rated for 24×7 operation in data centre environments.

Suited for bulk data arrays; not for desktop boot

This drive fits RAID and replicated multi-drive deployments that demand sustained write throughput and rotational vibration tolerance. It is not intended for single-drive desktop boot use, nor for workloads that exceed the 550 TB per year rating. Buyers needing higher single-drive capacity should consider larger models in the same series.

2 TB capacity with 550 TB annual workload

The 2 TB volume handles bulk archives, backups and unstructured data sets in always-on arrays. Headroom is defined by the 550 TB yearly workload limit and 2 million hour MTBF rating. Beyond that threshold, sustained heavy write patterns will exceed the design envelope and require additional drives.

How it compares

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

Price $121.99
Typical for this category: the median of 4,938 items is $107.99.
Total capacity 2 TB
Typical for this category: the median of 2,372 items is 2 TB.
Price per TB $61.00 per TB
Typical for this category: the median of 2,365 items is $62.21 per TB.

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Specifications

Product
Brand nameSeagate
Product lineExos 7E8
Model nameST2000NM004A
Total capacity2 TB
Recommended useFor Enterprise Storage
Performance
Rotational speed7,200 RPM
Mean latency4.16 ms
Storage
Flash memory typeHard Drive
Cache memory256 MB
Ports & slots
Interface typeSAS 12Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height26.1 mm
Maximum width101.85 mm
Maximum length147 mm
Shipping weight0.91 kg
Package size457 × 406 × 356 mm

Other versions of this model

4 more in the same range

Questions about this item

Will my server backplane need a SAS 12Gb/s controller for this 2TB drive to operate?

Yes, the drive uses a SAS 12Gb/s interface, so the host controller or backplane must support that speed for full operation.

Does the 256MB cache and 4.16ms latency help maintain steady throughput when paired with earlier 7200 RPM drives in a RAID set?

The 256MB cache and 4.16ms average latency are designed for consistent performance in multi-drive RAID environments alongside similar enterprise drives.

How can I confirm the drive is running at 7200 RPM with the full 256MB cache after installation?

Check the SMART data or controller BIOS for the reported rotational speed of 7200 RPM and cache size of 256MB to verify correct operation.

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