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Silver 3.5 inch internal hard drive with circuit board visible on underside

Seagate

Seagate ST18000NT001 IronWolf Pro 18TB 7200 RPM 256MB SATA 6.0Gb/s 3.5" internal hard drive

SKU CH-F797-2ADTV MPN ST18000NT001

An 18 TB 3.5-inch CMR drive built for 24×7 NAS workloads with AgileArray, RV sensors and 256 MB cache

  • InterfaceSATA 6.0Gb/s
  • Capacity18TB
  • Recording TechnologyCMR
  • RPM7200 RPM
  • Cache256MB
  • FeaturesOptimized for NAS with AgileArray AgileArray uses dual-plane

Options 18TB

  • 18TB capacity for massive NAS storage
  • 7200 RPM and 256MB cache deliver fast data access
  • CMR technology ensures consistent 24×7 performance
  • AgileArray with RV sensors optimises RAID in multi-bay systems
  • 550TB yearly workload rating and 2.5M hours MTBF

Designed for multi-bay NAS

The Seagate IronWolf Pro ST18000NT001 is an 18TB 3.5-inch internal hard drive built for 24×7 operation in multi-bay network-attached storage systems. It uses conventional magnetic recording and a SATA 6.0Gb/s interface to deliver consistent performance for creative professionals and small-business servers that need high-capacity, always-accessible storage.

Capacity and workload headroom

The drive provides 18TB of CMR capacity with a 256MB cache and 7200 RPM spindle speed, rated for up to 550TB per year workload rate. It comfortably handles sustained multi-user file sharing, backup streams and media libraries, while the 2.5M-hour MTBF rating supports long-term deployment; workloads exceeding the annualised rate or applications needing SSD-class latency will hit limits.

Thermals, noise and power in normal use

Optimised with AgileArray dual-plane balancing and built-in rotational vibration sensors, the drive maintains stable operation in dense chassis without excessive vibration-induced noise. The 26.11mm z-height fits standard 3.5-inch bays, and the SATA interface keeps power draw predictable for NAS power supplies; acoustic output remains typical for 7200 RPM enterprise drives during continuous read-write cycles.

Highlights

  • 18TB capacity for massive NAS storage
  • 7200 RPM and 256MB cache deliver fast data access
  • CMR technology ensures consistent 24×7 performance
  • AgileArray with RV sensors optimises RAID in multi-bay systems
  • 550TB yearly workload rating and 2.5M hours MTBF

Specifications

BrandSeagate
SeriesIronWolf Pro
ModelST18000NT001
InterfaceSATA 6.0Gb/s
Capacity18TB
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 20TB 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
Shipping weight0.66 kg
Package size146 × 102 × 25 mm

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Questions about this item

Will the ST18000NT001's SATA 6.0Gb/s interface work with my older NAS that only supports SATA 3.0Gb/s?

Yes, the SATA 6.0Gb/s interface is backward compatible with SATA 3.0Gb/s ports, though the drive will run at the slower 3.0Gb/s speed.

How can I verify the IronWolf Pro drive is healthy after installing it in my NAS?

Use IronWolf Health Management software to run SMART tests and monitor prevention, intervention, and recovery recommendations for peak system health.

Does the ST18000NT001 come with mounting screws or a SATA cable, or must I buy them separately?

Retail or OEM packing may vary; the drive itself is supplied without cables or screws, which must be sourced from your NAS chassis or purchased separately.

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