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Silver 3.5 inch bare hard drive with exposed circuit board and label showing Seagate IronWolf Pro 12TB

Seagate

Seagate IronWolf Pro 12TB 7200 RPM 256MB SATA 6.0Gb/s 3.5" ST12000NE0007

SKU CH-2BHG-ST81Z MPN ST12000NE0007

12 TB 7200 RPM SATA drive with 256 MB cache, AgileArray NAS optimisation, RV sensors and 300 TB/year workload rating

  • PackagingBare Drive
  • InterfaceSATA 6.0Gb/s
  • Capacity12TB
  • RPM7200 RPM
  • Cache256MB
  • Average Latency4.16ms
  • 12 TB capacity stores large media libraries and backups
  • 7200 RPM with 256 MB cache delivers responsive multi-user NAS performance
  • AgileArray technology balances dual planes and optimises RAID in multi-bay enclosures
  • IronWolf Health Management monitors drive condition and Rescue Data Recovery covers 2 years with 90 % in-house success
  • 300 TB per year workload rate and 1.2 M hours MTBF support 24 x 7 operation

Purpose-built NAS storage

The Seagate IronWolf Pro ST12000NE0007 is a 12TB 3.5-inch internal hard drive spinning at 7200 RPM with a 256MB cache and a SATA 6.0Gb/s interface. It is engineered for always-on, multi-bay NAS enclosures and carries a 1.2M-hour MTBF rating alongside a workload limit of 300TB per year. The bare-drive packaging suits system integrators and IT professionals deploying or expanding network-attached storage arrays.

Ideal for RAID arrays.

This drive targets users who need sustained 24x7 operation with rotational vibration sensors and AgileArray firmware for dual-plane balancing in RAID configurations. It includes IronWolf Health Management and two years of Seagate Rescue Data Recovery service with a 90% in-house success rate. Builders of laptops, external enclosures without active cooling, or silent desktop PCs should look elsewhere, as the 7200 RPM spindle and 26.11mm height demand proper NAS-class airflow and mounting.

The 300TB annual workload rating defines the fit

A maximum workload of 300TB per year is the single figure that determines whether this drive matches the intended environment. Arrays that routinely exceed this write volume — such as heavy video surveillance ingest or continuous database replication — need a higher-rated enterprise model. Workloads staying below this threshold, including typical small-business file shares, backup targets, and media libraries, align with the drive’s design limits and 5-year limited warranty coverage.

Highlights

  • 12 TB capacity stores large media libraries and backups
  • 7200 RPM with 256 MB cache delivers responsive multi-user NAS performance
  • AgileArray technology balances dual planes and optimises RAID in multi-bay enclosures
  • IronWolf Health Management monitors drive condition and Rescue Data Recovery covers 2 years with 90 % in-house success
  • 300 TB per year workload rate and 1.2 M hours MTBF support 24 x 7 operation

Specifications

BrandSeagate
SeriesIronWolf Pro
ModelST12000NE0007
PackagingBare Drive
InterfaceSATA 6.0Gb/s
Capacity12TB
RPM7200 RPM
Cache256MB
Average Latency4.16ms
FeaturesOptimized for NAS with AgileArray. AgileArray enables dual-plane balancing and RAID optimization in multi-bay environments, with the most advanced power management possible.
Actively protect your NAS with IronWolf Health Management focusing on prevention, intervention and recovery.1
High performance means no lag time or downtime for users during workload traffic for the NAS. Seagate leads the competition with the highest-performing NAS drive portfolio.2
Seagate Rescue Data Recovery.3 IronWolf Pro comes with extra peace of mind for any mechanical, accidental or natural disaster. With
UsageEnterprise NAS Hard Drives
Form Factor3.5"
Height (maximum)26.11mm
Width (maximum)101.85mm
Length (maximum)146.99mm
Shipping weight0.70 kg
Package size163 × 142 × 38 mm

Questions about this item

When will the 256MB cache or 7200 RPM mechanism need replacement?

The drive is rated for a 1.2M hour MTBF and a 300TB per year workload, so the cache and spindle are designed to last through that service life.

What limit appears first during continuous 24x7 operation?

The 300TB annual workload rating is the first ceiling you hit under sustained multi-bay NAS use.

How much noise, heat or power does the 3.5 inch 7200 RPM drive produce all day?

Rotational vibration sensors and AgileArray power management keep vibration and heat controlled during always-on operation.

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