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3.5 inch silver metal hard drive with circuit board visible

Seagate

Seagate Exos 7E8 ST3000NM000A 3 TB 7200 RPM 256MB SATA internal hard drive

SKU CH-YSNT-Y18G3 MPN ST3000NM000A

3 TB enterprise SATA hard drive with 7200 RPM and 256 MB cache, rated for 550 TB annual workload and 2 million hour MTBF

  • InterfaceSATA 6.0Gb/s
  • Capacity3TB
  • RPM7200 RPM
  • Cache256MB
  • FeaturesHard Drive

Options 3TB

Struck-through versions exist but are not stocked here.

  • 7200 RPM and 256 MB cache deliver fast data access
  • SATA 6.0 Gb/s interface enables high-throughput transfers
  • 3 TB capacity stores large enterprise datasets
  • 550 TB yearly workload rating supports 24×7 operation
  • 2 million hour MTBF provides proven enterprise reliability

Enterprise bulk data drive

The Seagate Exos 7E8 ST3000NM000A is a 3TB internal hard drive built for 24×7 enterprise workloads. It uses conventional magnetic recording technology to deliver reliable capacity for data centre bulk storage. The 7200 RPM spindle and 256MB cache support consistent throughput in replicated or RAID arrays. It is designed for IT professionals who need dependable high-capacity storage.

SATA 6.0Gb/s interface and 512n format

The drive connects through a standard SATA 6.0Gb/s interface and uses the 512n sector format for broad compatibility with existing controllers and backplanes. This connector choice means it fits directly into typical server drive bays and RAID enclosures without adapters. The 512n format simplifies deployment in legacy and current operating systems alike. No special mounting hardware or protocol translation is required.

550 TB per year workload rating

The Exos 7E8 is rated for 550 TB of data transferred per year, a figure ten times higher than typical desktop drives. This workload rating is the single specification that determines whether the drive matches a 24×7 bulk data environment. Buyers who need sustained write performance beyond this annualised limit should consider a different drive class. The 2 million hour MTBF rating further qualifies it for continuous operation.

Highlights

  • 7200 RPM and 256 MB cache deliver fast data access
  • SATA 6.0 Gb/s interface enables high-throughput transfers
  • 3 TB capacity stores large enterprise datasets
  • 550 TB yearly workload rating supports 24×7 operation
  • 2 million hour MTBF provides proven enterprise reliability

Specifications

BrandSeagate
SeriesExos 7E8
ModelST3000NM000A
InterfaceSATA 6.0Gb/s
Capacity3TB
RPM7200 RPM
Cache256MB
FeaturesHard Drive
Shipping weight0.91 kg
Package size178 × 102 × 51 mm

Other versions of this model

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Questions about this item

What throughput does the SATA 6.0Gb/s interface actually cap at?

The SATA 6.0Gb/s interface caps real-world throughput at roughly 600 MB/s, so sustained reads and writes from the 7200 RPM platters will not exceed that ceiling.

What physical space and mounting does this 3 TB drive require?

It fits a standard 3.5-inch drive bay with SATA data and power connectors, using the typical four side or bottom screw holes for secure mounting.

How is the drive installed, and which step is often missed?

Connect both the SATA data cable to the motherboard and the SATA power cable from the PSU, then initialise and format the 512n volume in the OS — skipping the format leaves the drive invisible.

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