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Silver 3.5 inch enterprise hard drive bare unit

Seagate

Seagate ST4000NM0034 4TB SAS 12Gb/s 7200 RPM 128MB 3.5" internal hard drive

SKU CH-14GB-4GFPJ MPN ST4000NM0034

Enterprise SAS 12Gb/s drive delivers 4TB at 7200 RPM with 128MB cache for 24x7 workloads of 550TB/yr

  • PackagingBare Drive
  • InterfaceSAS 12Gb/s
  • Capacity4TB
  • RPM7200 RPM
  • Cache128MB
  • Average Latency4.16ms

Options 4TB

Struck-through versions exist but are not stocked here.

  • 4TB capacity stores massive enterprise datasets
  • SAS 12Gb/s interface moves data at high speed
  • 7200 RPM spindle delivers fast random access
  • 128MB cache accelerates read and write bursts
  • Engineered for 24×7 workloads of 550TB per year

Product identity

The Seagate ST4000NM0034 is a 4TB 3.5 inch enterprise hard drive with a SAS 12Gb/s interface. It targets storage arrays and servers that need reliable bulk capacity for unstructured data.

Practical limits of SAS 12Gb/s

The SAS 12Gb/s link sets the maximum bus throughput, but sustained transfer depends on the 7200 RPM platters and 4.16ms average latency. Random I/O is constrained by mechanical seek time, and the 128MB cache can only absorb brief bursts before the physical media becomes the bottleneck.

Capacity and headroom

Four terabytes provides substantial space for archival workloads and RAID sets, while the 550TB per year workload rating supports continuous 24x7 operation. The drive runs out of headroom when sustained write streams exceed the mechanical media rate or when the annualised workload limit is approached.

Highlights

  • 4TB capacity stores massive enterprise datasets
  • SAS 12Gb/s interface moves data at high speed
  • 7200 RPM spindle delivers fast random access
  • 128MB cache accelerates read and write bursts
  • Engineered for 24×7 workloads of 550TB per year

Specifications

BrandSeagate
ModelST4000NM0034
PackagingBare Drive
InterfaceSAS 12Gb/s
Capacity4TB
RPM7200 RPM
Cache128MB
Average Latency4.16ms
FeaturesFastest high-capacity HDD with best-in-class random and sequential read/write performance.
Eighth-generation drive technology for reliable access to bulk storage of unstructured data.
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.
Engineered for 24x7 workloads of 550TB/yr-10 x that of desktop drives.
Robust performance with dual processors, ramp load technology, top-coverattached motor and humidity sensor
UsageFor Enterprise Storage
Form Factor3.5"
Shipping weight0.68 kg
Package size160 × 141 × 38 mm

Other versions of this model

1 more in the same range

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Questions about this item

Which capacity version of the ST4000NM0034 should I choose for an enterprise RAID array?

The ST4000NM0034 is offered as a single 4TB model. Its 7200 RPM spindle and 128MB cache are tuned for 24x7 workloads rated at 550TB per year, making this capacity the intended choice for high-density RAID storage.

What does the 7200 RPM rating deliver once the drive is installed in a server?

At 7200 RPM the drive achieves an average latency of 4.16ms, enabling fast random and sequential read/write performance for bulk unstructured data access in enterprise environments.

How does the SAS 12Gb/s interface limit real-world throughput?

The SAS 12Gb/s interface caps the maximum burst transfer rate at 12Gb/s; sustained throughput will be governed by the 7200 RPM mechanical speed and the 128MB cache.

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