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Rectangular silver 3.5 inch enterprise hard drive with SAS connector and label showing model ST4000NM0023

Seagate

Seagate ST4000NM0023 4TB 7200 RPM 128MB SAS 6Gb/s 3.5" internal hard drive

SKU CH-XT6S-C8E00 MPN ST4000NM0023

Enterprise-grade 4 TB SAS drive with 7200 RPM and 128 MB cache for bulk-data storage

  • InterfaceSAS 6Gb/s
  • Capacity4TB
  • NAND Flash Memory TypeSLC
  • RPM7200 RPM
  • Cache128MB
  • Average Latency4.16ms
  • Enterprise-grade 4TB capacity for bulk-data workloads
  • SAS 6Gb/s interface delivers consistent throughput
  • 7200 RPM spindle speed supports rapid data access
  • 128MB cache buffers heavy I/O operations
  • 16ms average latency keeps response times low

Enterprise capacity drive

The Seagate Constellation ES.3 ST4000NM0023 is a 4TB 3.5-inch internal hard drive built for enterprise storage arrays. It spins at 7200 RPM with a 128MB cache and connects through a SAS 6Gb/s interface. The drive is supplied in refurbished condition.

Suits bulk-data arrays, not desktop boot

This drive suits administrators expanding RAID sets, backup targets or cold-storage tiers where high capacity and sustained write endurance matter. It is not for builders who need a SATA-only controller, a 2.5-inch form factor, or a consumer warranty bundle.

SAS 6Gb/s interface decides fit

The SAS 6Gb/s interface is the single specification that determines compatibility; the drive requires a backplane or controller that supports SAS signalling. A SATA-only host bus adapter cannot negotiate the link, so the drive will not be recognised.

Highlights

  • Enterprise-grade 4TB capacity for bulk-data workloads
  • SAS 6Gb/s interface delivers consistent throughput
  • 7200 RPM spindle speed supports rapid data access
  • 128MB cache buffers heavy I/O operations
  • 16ms average latency keeps response times low

Specifications

BrandSeagate
SeriesConstellation ES.3
ModelST4000NM0023
InterfaceSAS 6Gb/s
Capacity4TB
NAND Flash Memory TypeSLC
RPM7200 RPM
Cache128MB
Average Latency4.16ms
FeaturesCapacity-Optimized Enterprise Hard Drive for Bulk-Data Applications
- Highest-capacity large form factor enterprise drive - up to 4TB - for demanding data growth
- Sixth-generation drive technology with SAS and SATA interfaces for 24x7 reliability
- Enhanced error correction, super parity and end-to-end SAS-based data integrity for accurate data storage
- Industry-leading rotational vibration tolerance ensures consistent performance
- Improved power and cooling efficiencies with low power consumption and on-demand PowerChoice technology based on T10/T13 power management standards
- M
UsageFor Enterprise Storage
Form Factor3.5"
Height (maximum)26.10mm
Width (maximum)101.85mm
Length (maximum)147.00mm
Shipping weight0.72 kg
Package size178 × 140 × 38 mm

Questions about this item

Should I pick the 4TB model or a different capacity for my storage array?

This specific unit is the 4TB capacity; other capacities are separate part numbers not covered by this listing.

What does the 7200 RPM speed mean for daily workloads?

The spindle rotates at 7200 RPM with a 4.16ms average latency, delivering consistent throughput for bulk-data enterprise applications.

Will the SAS 6Gb/s interface limit performance on my controller?

The drive uses a SAS 6Gb/s interface, so the link caps at 6Gb/s; actual throughput depends on your controller and system configuration.

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