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Silver 3.5 inch internal hard drive with SATA connectors and label showing IronWolf Pro 4TB

Seagate

Seagate IronWolf Pro ST4000NT001 4TB 7200 RPM 256MB SATA 3.5" internal hard drive

SKU CH-W9PX-N8BZM MPN ST4000NT001

A 4 TB 7200 RPM SATA drive with 256 MB cache built for 24×7 NAS RAID arrays

  • InterfaceSATA 6.0Gb/s
  • Capacity4TB
  • Recording TechnologyCMR
  • RPM7200 RPM
  • Cache256MB
  • FeaturesOptimized for NAS with AgileArray AgileArray uses dual-plane

Options 4TB

  • Built for 24x7 multi-bay NAS workloads
  • 7200 RPM and 256 MB cache deliver fast RAID throughput
  • CMR recording technology ensures consistent write performance
  • AgileArray dual-plane balancing and TLER optimise RAID reliability
  • IronWolf Health Management plus three-year Rescue Data Recovery protects data

Built for Multi-Bay NAS

The Seagate IronWolf Pro ST4000NT001 is a 4TB 3.5-inch internal hard drive designed for commercial and enterprise NAS systems. It spins at 7200 RPM with a 256MB cache and uses CMR recording technology. The SATA 6.0Gb/s interface connects directly to standard drive bays. AgileArray firmware adds dual-plane balancing and time-limited error recovery for consistent RAID performance in multi-bay enclosures. This drive is built for 24x7 operation in always-on environments.

Suits RAID Arrays Not Single Desktop PCs

This drive targets administrators running multi-user, multi-bay NAS appliances that demand sustained throughput and RAID optimisation. The firmware and vibration tuning are calibrated for dense chassis, not standalone workstations. Buyers who need a quiet, low-power drive for a single-bay home PC or external enclosure should look elsewhere. The enterprise feature set adds cost and acoustic output that a typical desktop workload does not justify.

Four Terabytes With 256MB Cache Headroom

The 4TB capacity handles growing media libraries, virtualisation datastores and backup repositories across multiple bays. The 256MB cache absorbs bursty write streams common in RAID rebuilds and concurrent user access. In heavy sustained write scenarios the 7200 RPM platters eventually become the bottleneck, limiting peak throughput compared to solid-state alternatives. For workloads exceeding this capacity or speed tier, a higher-capacity IronWolf Pro model or SSD tier is required.

Points forts

  • Built for 24x7 multi-bay NAS workloads
  • 7200 RPM and 256 MB cache deliver fast RAID throughput
  • CMR recording technology ensures consistent write performance
  • AgileArray dual-plane balancing and TLER optimise RAID reliability
  • IronWolf Health Management plus three-year Rescue Data Recovery protects data

Caractéristiques

BrandSeagate
SeriesIronWolf Pro
ModelST4000NT001
Part NumberST4000NT001
InterfaceSATA 6.0Gb/s
Capacity4TB
Recording TechnologyCMR
RPM7200 RPM
Cache256MB
FeaturesOptimized for NAS with AgileArray AgileArray uses dual-plane balancing and time-limited error recovery (TLER) to deliver best-in-class RAID performance in multi-bay systems.
Always On, Always Accessible IronWolf Pro drives are designed for 24x7 performance, allowing users to access their data anytime, anywhere.
All-CMR Portfolio All IronWolf Pro drives utilize conventional magnetic recording (CMR) technology for consistent, best-in-class NAS performance.
Up to 32TB Broad range of high-performance capacity options to deliver scalable and costefficient storage solutions.
Built Tough Ir
UsageEnterprise NAS Hard Drives
Form Factor3.5"
Height (maximum)26.11mm
Width (maximum)101.85mm
Length (maximum)146.99mm
Poids d’expédition0.91 kg
Dimensions du colis196 × 152 × 51 mm

Autres versions de ce modèle

5 de plus dans cette gamme

Même famille, mémoire, ventirad ou fréquence différents — comparez avant de vous décider.

Questions sur cet article

Does this SATA 6.0Gb/s IronWolf Pro require a specific RAID controller or motherboard port to function in a NAS?

It connects via a standard SATA 6.0Gb/s interface and works with any compatible NAS bay or motherboard SATA port that supports 3.5" drives.

Will the 7200 RPM speed and 256MB cache of this drive cause issues when mixed with slower drives in the same array?

The drive operates at its rated 7200 RPM with 256MB cache; array performance will follow the slowest drive, but AgileArray TLER helps maintain RAID stability in mixed configurations.

How can I verify the IronWolf Health Management system is actively monitoring this drive after installation?

Use the NAS vendor's built-in S.M.A.R.T. tools or IronWolf Health Management compatible software to view real-time health metrics and prevention alerts.

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