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

Seagate

Seagate Exos 7E8 ST8000NM001A 8 TB SAS 12Gb/s 7200 RPM 256MB cache internal hard drive

SKU CH-8AJ2-1MZYB

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

  • Total capacity8 TB
  • Interface typeSAS 12Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Flash memory typeHard Drive
  • Rotational speed7,200 RPM
  • 8 TB capacity for massive enterprise storage
  • SAS 12Gb/s interface delivers fast data throughput
  • 7200 RPM spindle speed enables responsive performance
  • 256 MB cache accelerates read/write operations
  • 2 million hour MTBF rating ensures 24×7 reliability

Enterprise bulk storage

The Seagate Exos 7E8 ST8000NM001A is an 8 TB SAS hard drive built for enterprise bulk data applications. It suits data centre architects and IT professionals who need reliable 24×7 storage for unstructured data. The 7200 RPM spindle and 256 MB cache support consistent throughput in replicated or RAID multi-drive systems.

Installation and common issues

The 3.5 inch form factor fits standard enterprise drive bays using the SAS 12Gb/s interface. A bare drive is supplied without cables or brackets, so installers must provide compatible SAS backplanes and power connections. The 26.10 mm height matches typical server sleds, yet some compact chassis may not accommodate the 147.00 mm length.

Deciding specification

The SAS 12Gb/s interface determines whether this drive matches the host controller and backplane in the target system. Buyers whose infrastructure uses SATA-only controllers cannot use this drive without an appropriate adapter or HBA.

How it compares

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

Price $259.99
Pricier than about 78% 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 $32.50 per TB
Cheaper than about 79% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineExos 7E8
Model nameST8000NM001A
Total capacity8 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

Questions about this item

How can I confirm the ST8000NM001A is operating correctly after installation?

Check the 7200 RPM spindle speed and 4.16 ms average latency in SMART data, verify the SAS 12Gb/s link rate, and run a full surface scan with zero reallocated sectors.

What comes with the bare-drive ST8000NM001A and what must I source separately?

Only the 3.5 inch 8 TB drive is included; you need a SAS 12Gb/s HBA or RAID card, 3.5 inch bay mounting screws, and SAS power and data cables.

Which Exos 7E8 capacity should I choose for a 24×7 bulk-data array?

The 8 TB ST8000NM001A is the maximum capacity in this series, rated for 550 TB per year workload and 2 million hour MTBF.

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