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Silver 3.5 inch bare internal hard drive with exposed circuit board

Seagate

Seagate ST8000NM0055 8TB 3.5" SATA 7200RPM 256MB internal hard drive

SKU CH-FT0W-RJF0X MPN ST8000NM0055

An 8TB 3.5-inch enterprise hard drive spinning at 7200RPM with a 256MB cache and SATA 6.0Gb/s interface for bulk-data storage

  • PackagingBare Drive
  • InterfaceSATA 6.0Gb/s
  • Capacity8TB
  • NAND Flash Memory TypeSLC
  • RPM7200 RPM
  • Cache256MB

Options 8TB

  • 8 TB capacity stores massive datasets in one slot
  • 7200 RPM spindle delivers fast sequential throughput
  • 256 MB cache absorbs burst write workloads
  • SATA 6.0 Gb/s interface fits standard server backplanes
  • Self-encrypting drive with Instant Secure Erase protects data at rest

Enterprise bulk-data capacity

The Seagate ST8000NM0055 is an 8TB 3.5-inch enterprise hard drive built for bulk-data applications. It uses 7200 RPM spindle speed and a 256MB cache on a SATA 6.0Gb/s interface. The six-disk design delivers 33% more storage in the same slot. It is suited for storage arrays, backup targets and archival workloads that prioritise capacity over latency.

Compatibility checks

Verify that your system has a free 3.5-inch drive bay and a SATA data and power connection. The drive measures 147.00mm long, 101.85mm wide and 26.10mm high, so confirm clearance in compact chassis. Ensure your host controller supports SATA/600 for full throughput. This is a bare OEM drive without cables or mounting hardware.

Thermals and power

Enterprise drives run continuously, so provide adequate airflow across the 3.5-inch form factor. The 7200 RPM spindle and six platters generate more heat than lower-speed models. PowerChoice technology helps manage draw during idle periods. Self-encrypting drive hardware and Instant Secure Erase add security without a measurable performance penalty. Expect typical enterprise acoustic levels under sustained loads.

Highlights

  • 8 TB capacity stores massive datasets in one slot
  • 7200 RPM spindle delivers fast sequential throughput
  • 256 MB cache absorbs burst write workloads
  • SATA 6.0 Gb/s interface fits standard server backplanes
  • Self-encrypting drive with Instant Secure Erase protects data at rest

Specifications

BrandSeagate
SeriesEnterprise Capacity 3.5
ModelST8000NM0055
PackagingBare Drive
InterfaceSATA 6.0Gb/s
Capacity8TB
NAND Flash Memory TypeSLC
RPM7200 RPM
Cache256MB
Average Latency4.16ms
FeaturesCapacity-Optimized Enterprise Hard Drive for Bulk-Data Applications
- 8TB, 3.5-inch enterprise drive with industry-leading 6-disk technology, resulting in 33% more storage in the same storage slot
- Advanced Write Caching feature to utilize enhanced algorithms, resulting in the industry's highest nearline storage workload performance efficiencies - 100% performance improvement in random writes over last-generation drive
- Widely accepted, proven ninth-generation conventional perpendicular recording technology for reliable access to unstructured data in bulk storage applications
- 12G
UsageFor Enterprise Storage
Form Factor3.5"
Height (maximum)26.10mm
Width (maximum)101.85mm
Length (maximum)147.00mm
Shipping weight0.79 kg
Package size191 × 137 × 38 mm

Other versions of this model

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Questions about this item

What comes in the box and what cables or brackets must be bought separately?

The drive ships as a bare 3.5-inch unit without SATA data or power cables, mounting screws or a tray; those items must be sourced separately.

Which version or capacity of the Enterprise Capacity 3.5 series should I choose?

This model is the 8TB variant with 7200 RPM, 256MB cache and SATA 6.0Gb/s; other capacities in the same series differ in storage size but share the same interface and form factor.

What does the 7200 RPM spindle speed mean for real-world throughput in a desktop or server?

The 7200 RPM rotation yields an average latency of 4.16ms and supports sustained transfers up to the SATA 6.0Gb/s link limit, making it suited for bulk-data workloads in enterprise storage arrays.

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