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Silver 3.5 inch internal hard drive with circuit board visible

Seagate

Seagate ST2000NM0055Product 2TB 3.5" 7200rpm 128MB SATA internal hard drive

SKU CH-DFVP-48W79 MPN ST2000NM0055Product

A 2 TB 3.5-inch desktop hard drive spinning at 7200 RPM with a 128 MB cache and a SATA 6.0 Gb/s interface

  • Capacity2TB
  • RPM7200 RPM
  • InterfaceSATA 6.0Gb/s
  • Cache128MB
  • NAND Flash Memory TypeSLC
  • Recording TechnologyCMR
  • 2 TB capacity stores large media libraries
  • 7200 RPM spindle speed delivers responsive data access
  • 128 MB cache buffers bursts for smoother throughput
  • SATA 6.0 Gb/s interface connects to standard desktop ports
  • CMR recording technology provides consistent write performance

Capacity and Interface

The Seagate Exos 7E8 ST2000NM0055 is a 2 TB 3.5-inch internal hard drive built for desktop systems. It spins at 7200 RPM with a 128 MB cache and connects through a SATA 6.0 Gb/s interface using conventional magnetic recording technology.

Who This Suits

This drive suits users who need a high-capacity mechanical drive for bulk storage, backups or archival workloads where sequential throughput matters. It is not for buyers who need the low latency of solid-state storage, who require a 2.5-inch form factor for a laptop or compact chassis, or who depend on hardware encryption features beyond the included Seagate Secure implementation.

Deciding Specification

The 7200 RPM spindle speed combined with a 128 MB cache determines whether this model delivers the sustained transfer rates required for your workload; lower-RPM or smaller-cache drives will not match this throughput profile.

Highlights

  • 2 TB capacity stores large media libraries
  • 7200 RPM spindle speed delivers responsive data access
  • 128 MB cache buffers bursts for smoother throughput
  • SATA 6.0 Gb/s interface connects to standard desktop ports
  • CMR recording technology provides consistent write performance

Specifications

BrandSeagate
SeriesExos 7E8
ModelST2000NM0055
Part Number1V4104-881
Capacity2TB
RPM7200 RPM
InterfaceSATA 6.0Gb/s
Cache128MB
NAND Flash Memory TypeSLC
Recording TechnologyCMR
Form Factor3.5"
FeaturesSeagate Secure

Questions about this item

What 3.5" drive bay and SATA connectors does the ST2000NM0055 require?

The drive fits a standard 3.5-inch bay and uses a SATA 6.0Gb/s data cable plus a SATA power connector from the PSU.

How do I install the Exos 7E8 2TB drive, and which step is often missed?

Mount the drive in the bay, attach the SATA data and power cables, then initialise and format the 2TB volume in the OS — the formatting step is frequently skipped.

When will the 128MB cache CMR drive need replacement?

As a mechanical CMR drive with 7200 RPM, plan to replace it after 3–5 years of continuous use or when SMART attributes show reallocated sectors.

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