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Seagate Enterprise 3.5" 18000 GB 7200 RPM 18 TB 3.5" 7200 RPM SATA ST18000NM00J (Renewed)
Amazon Renewed

Seagate Enterprise 3.5" 18000 GB 7200 RPM 18 TB 3.5" 7200 RPM SATA ST18000NM00J (Renewed)

Bottom line: The Seagate Enterprise 3.5" 18000 GB 7200 RPM 18 TB 3.5" 7200 RPM SATA: 18TB Exos X18 enterprise capacity in a standard 3.5-inch SATA bay; main trade-off: renewed unit, so drive hours and prior workload are unknown.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

Pros & Cons

Pros

  • ✓ 18TB Exos X18 enterprise capacity in a standard 3.5-inch SATA bay
  • ✓ 7200 RPM spindle speed, not a slower archive-class drive
  • ✓ Enterprise-class drive built for rack-space efficiency per Seagate
  • ✓ Renewed pricing well under new enterprise 18TB street cost

Cons

  • ✗ Renewed unit, so drive hours and prior workload are unknown
  • ✗ Sold under Amazon Renewed, not Seagate's own warranty program
  • ✗ No published cache size, workload rating, or MTBF in the listing
  • ✗ 7200 RPM enterprise drives run louder and hotter than desktop NAS models

Manufacturer description

Seagate Exos X18 is an enterprise drive, designed for maximum storage capacity and the highest rack-space efficiency

SpecPicks Verdict

SpecPicks scored Seagate Enterprise 3.5" 18000 GB 7200 RPM 18 TB 3.5" 7200 RPM SATA using a rating × review-volume × price-fit model applied to published specs and reviews across the PC & gaming hardware category. Amazon Renewed's PC & gaming hardware lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for PC & gaming hardware of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Full Specifications

BrandSeagate
Model NameST18000NM000J
Read Speed600 megabytes_per_second
Form Factor3.5-inch
Media Speed600 MB/s
Model NumberST18000NM000J
Built-In MediaSATA cable, mounting kit
Hard Disk Size18 TB
Hard-Drive Size18 TB
Mfr Part NumberST18000NM000J/3D
Number of Items1
Special FeaturePortable
Installation TypeInternal Hard Drive
Compatible DevicesDesktop
Data Transfer Rate6 gigabytes_per_second
Enclosure MaterialGlass/Ceramic
Additional FeaturesPortable
Hard Disk InterfaceSerial ATA
Warranty Description90 days limited warranty
Hard Disk DescriptionMechanical Hard Disk

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Seagate Enterprise 3.5" 18000 GB 7200 RPM 18 TB 3.5" 7200 RPM SATA ST18000NM00J (Renewed) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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Seagate Enterprise 3.5" 18000 GB 7200 RPM 18 TB 3.5" 7200 RPM SATA ST18000NM00J (Renewed)
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