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Silver 3.5-inch internal hard drive with label showing Seagate IronWolf Pro 20TB

Seagate

Seagate IronWolf Pro 20TB 7200 RPM 256MB CMR SATA 6.0Gb/s 3.5" NE-ST20000NE000 internal hard drive

SKU CH-DE8B-PFNJQ MPN NE-ST20000NE000

A 20 TB, 7200 RPM CMR drive with 256 MB cache built for 24-bay NAS and 300 TB yearly workloads

  • InterfaceSATA 6.0Gb/s
  • Capacity20TB
  • Recording TechnologyCMR
  • RPM7200 RPM
  • Cache256MB
  • FeaturesOptimized for NAS with AgileArray AgileArray enables Dual-Pl

Options 20TB

  • 20 TB capacity stores massive datasets
  • 7200 RPM with 256 MB cache speeds multi-user workloads
  • CMR recording technology ensures consistent write performance
  • AgileArray firmware plus RV sensors optimise RAID reliability up to 24 bays
  • 300 TB yearly workload rating supports always-on enterprise NAS

Capacity and interface

The Seagate IronWolf Pro is a 20TB 3.5-inch internal hard drive that uses the SATA 6.0Gb/s interface. It spins at 7200 RPM and provides a 256MB cache with CMR recording technology. The drive is built for always-on operation in multi-bay NAS enclosures.

Who it suits and who it does not

This drive suits users who need 20TB of storage in a single bay and whose NAS supports SATA drives with AgileArray firmware. It is not for systems that only accept 2.5-inch drives or for workloads that exceed the 300TB per year rating. Buyers needing more than 24 bays per enclosure should also look elsewhere.

Deciding specification

The SATA 6.0Gb/s interface is the single specification that decides compatibility. The drive fits a standard 3.5-inch bay with maximum dimensions of 146.99mm length, 101.85mm width and 26.11mm height. Verify that the NAS controller and backplane support SATA before purchase.

Highlights

  • 20 TB capacity stores massive datasets
  • 7200 RPM with 256 MB cache speeds multi-user workloads
  • CMR recording technology ensures consistent write performance
  • AgileArray firmware plus RV sensors optimise RAID reliability up to 24 bays
  • 300 TB yearly workload rating supports always-on enterprise NAS

Specifications

BrandSeagate
SeriesIronWolf Pro
ModelNE-ST20000NE000
InterfaceSATA 6.0Gb/s
Capacity20TB
Recording TechnologyCMR
RPM7200 RPM
Cache256MB
FeaturesOptimized for NAS with AgileArray AgileArray enables Dual-Plane Balancing and TimeLimited Error Recovery to deliver best-in-class RAID performance in multi-bay systems.
Always On, Always Accessible IronWolf Pro drives are designed for 24x7 usage, allowing users to access their data any time, anywhere.
All-CMR Portfolio All IronWolf Pro drives utilize Conventional Magnetic Recording (CMR) technology for consistent, best-in-class NAS performance.
Up to 20TB Broad range of capacity options to deliver scalable and cost-efficient storage solutions.
Built Tough IronWolf Pro drives are rate
UsageEnterprise NAS Hard Drives
Form Factor3.5"
Height (maximum)26.11mm
Width (maximum)101.85mm
Length (maximum)146.99mm
Shipping weight1.13 kg
Package size196 × 152 × 51 mm

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Questions about this item

What does the SATA 6.0Gb/s interface limit in practice?

The SATA 6.0Gb/s link sets the maximum data rate for the drive, capping sequential transfer speeds at the interface ceiling.

What physical clearance does the 3.5" 26.11mm high drive require?

The drive measures 146.99mm long, 101.85mm wide and 26.11mm high, so the bay must accommodate those maximum dimensions.

How is the drive installed in a NAS and what step is often missed?

Mount the drive in a 3.5" bay using four screws, connect SATA data and power cables, then enable the IronWolf Health Management feature in the NAS OS for monitoring.

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