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Silver 3.5 inch bare hard drive with circuit board visible

Seagate

Seagate ST4000NM0095 4TB 7200 RPM 3.5" SAS 12Gb/s 128MB internal hard drive

SKU CH-0EVE-KDKE3 MPN ST4000NM0095

Enterprise 4TB SAS hard drive with 7200 RPM, 128MB cache and CMR technology for 24x7 bulk-data workloads

  • PackagingBare Drive
  • Interface4Kn SAS
  • Capacity4TB
  • RPM7200 RPM
  • Cache128MB
  • Average Latency4.16ms

Options 4TB

  • 4TB capacity stores bulk enterprise data
  • 7200 RPM spindle delivers consistent nearline performance
  • 12Gb/s SAS interface integrates with RAID arrays
  • 128MB cache with Advanced Write Caching boosts workload efficiency
  • Engineered for 24x7 operation at 550TB/yr workload rating

Enterprise bulk-data drive

The Seagate ST4000NM0095 is a 4000 GB 3.5 inch hard drive built for enterprise storage servers that run 24x7 workloads of 550 TB per year. It uses conventional magnetic recording technology and dual processors to deliver reliable access to unstructured data in dense multi-drive systems. The bare drive suits administrators who need maximum capacity per storage slot.

12 Gb/s SAS 4Kn interface

This model connects through a 12 Gb/s SAS interface with 4Kn sector format and 128 MB cache. The interface determines whether the drive fits your storage server or RAID array; it also supports SATA 6 Gb/s for easy integration into replicated systems. Buyers whose controllers require 512n or 512e sector formats should verify compatibility before purchasing.

Thermals and power in normal use

The drive operates within standard enterprise temperature ranges using ramp load technology and a humidity sensor for consistent performance in all chassis. An on-demand PowerBalance feature lowers power draw during random read and write activity while maintaining throughput. Average latency is 4.16 ms at 7200 RPM, and the 26.10 mm height fits standard 3.5 inch drive bays.

Privalumai

  • 4TB capacity stores bulk enterprise data
  • 7200 RPM spindle delivers consistent nearline performance
  • 12Gb/s SAS interface integrates with RAID arrays
  • 128MB cache with Advanced Write Caching boosts workload efficiency
  • Engineered for 24x7 operation at 550TB/yr workload rating

Specifikacijos

BrandSeagate
ModelST4000NM0095
PackagingBare Drive
Interface4Kn SAS
Capacity4TB
RPM7200 RPM
Cache128MB
Average Latency4.16ms
FeaturesCapacity-Optimized Enterprise Hard Drive for Bulk-Data Applications
- 1TB to 8TB*1, 3.5-inch enterprise drive with industry-leading conventional magnetic recording (CMR) technology
- Advanced Write Caching feature enables up to 100% performance improvement in random writes over last-generation drive
- 12Gb/s SAS and SATA 6Gb/s interfaces in industry-standard formats (512n, 512e and 4Kn) for easy integration into replicated and RAID multi-drive storage servers and systems
- State-of-the-art cache, on-the-fly error-correction algorithms, super parity and end-to-end SAS-based data integ
UsageFor Enterprise Storage
Form Factor3.5"
Height (maximum)26.10mm
Width (maximum)101.85mm
Length (maximum)147.00mm
Siuntos svoris0.68 kg
Pakuotės dydis166 × 140 × 32 mm

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How does the 7200 RPM speed affect performance in a real server?

The 7200 RPM spindle delivers an average latency of 4.16ms, providing consistent throughput for 24x7 enterprise workloads rated up to 550TB per year.

What does the 12Gb/s SAS interface limit in practice?

The 12Gb/s SAS link sets the maximum host transfer rate; actual sustained throughput depends on the drive's internal media speed and the controller's queue depth.

Will this 3.5-inch drive fit a standard hot-swap tray?

Yes, it measures 147.00mm long, 101.85mm wide and 26.10mm high, matching the industry-standard 3.5-inch form factor for server bays.

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