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Silver 3.5 inch enterprise hard drive with SAS connector and label showing Exos 7E10 ST4000NM001B 4TB 7200 RPM 256MB cache

Seagate

Seagate Exos 7E10 ST4000NM001B 4TB SAS 12Gb/s 7200 RPM 256MB 3.5" internal hard drive

SKU CH-50PJ-0Z4NF MPN ST4000NM001B

Enterprise SAS 12Gb/s 3.5" drive delivers 4TB at 7200 RPM with 256MB cache for 24x7 bulk data storage

  • Total capacity4 TB
  • Interface typeSAS 12Gb/s
  • Form factor3.5 in (8.89 cm)
  • Flash memory typeHard Drive
  • Rotational speed7,200 RPM
  • Cache memory256 MB
  • Enterprise-grade 4TB capacity for massive bulk data storage
  • SAS 12Gb/s interface delivers high throughput for data centre workloads
  • 7200 RPM with 256MB cache ensures responsive performance for mainstream applications
  • 16ms average latency supports low-latency access in 24x7 environments
  • 5-inch form factor fits standard enterprise drive bays and RAID arrays

Seagate Exos 7E10 4TB SAS enterprise drive

This Seagate Exos 7E10 ST4000NM001B is a 4TB 3.5-inch internal hard drive built for enterprise storage. It runs at 7200 RPM with a 256MB cache and connects through a SAS 12Gb/s interface. The drive is designed for 24x7 operation in mainstream data centre applications. Average latency is 4.16ms.

Suits hyperscale and RAID arrays.

This drive fits hyperscale cloud data centres, massive scale-out deployments, OLTP and HPC workloads, high-density RAID storage, mainstream enterprise external arrays, distributed file systems such as Hadoop and Ceph, enterprise backup and restore, and centralised surveillance. Buyers whose systems lack a SAS 12Gb/s host bus adapter or backplane cannot use this drive.

SAS 12Gb/s interface decides compatibility

The single specification that determines whether this is the right part is the SAS 12Gb/s interface. The drive requires a controller or backplane that supports SAS 12Gb/s signalling. Without that connection the drive will not function in the target system.

How it compares

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

Price $164.99
Pricier than about 63% 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 $41.25 per TB
Cheaper than about 69% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineExos 7E10
Model nameST4000NM001B
Total capacity4 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 height26.11 mm
Maximum width101.85 mm
Maximum length147 mm
Shipping weight0.91 kg
Package size196 × 152 × 51 mm

Questions about this item

Will the 3.5" 26.11mm high drive fit in a standard 3.5" bay?

Yes, the 26.11mm height matches the standard 3.5" form factor used in most server and storage chassis.

What is the correct way to connect the SAS 12Gb/s interface to avoid link errors?

Use a SAS 12Gb/s cable and backplane; the drive will negotiate down to 6Gb/s if the controller or expander only supports that speed.

How often should I check the 4TB enterprise drive for SMART reallocated sectors?

Monitor SMART attributes monthly; rising reallocated sector counts indicate media wear and the drive should be replaced before failure.

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