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Seagate Exos X20 ST18000NM001D 18TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Internal Hard Drive, SED

  • 7200 RPM 256MB Cache
  • SAS 12Gb/s
  • For Enterprise Storage
Specs
Reviews

Learn more about the Seagate ST18000NM001D

Model
Brand Seagate
Series Exos X20
Model ST18000NM001D
Performance
Interface SAS 12Gb/s
Capacity 18TB
Recording Technology CMR
RPM 7200 RPM
Cache 256MB
Average Latency 4.16ms
Features
Features Market-leading 20TB HDD offering the highest capacity available for more petabytes per rack*

Highly reliable performance with enhanced caching, making it the logical choice for cloud data center and massive scale-out data center applications

Hyperscale SATA model tuned for large data transfers and low latency

PowerBalance feature optimizes Watts/TB

Maximize total cost of ownership savings through lower power and weight with helium sealed-drive design

Proven helium side-sealing weld technology for added handling robustness and leak protection

Digital environmental sensors to monitor internal drive conditions for optimal operation and performance

Data protection and security- Seagate Secure features for safe, affordable, fast, and easy drive retirement

* Compared to 18TB competitive product.
Usage For Enterprise Storage
Dimensions
Form Factor 3.5"
Height (maximum) 26.10mm
Width (maximum) 101.85mm
Length (maximum) 147.00mm
Additional Information
First Listed on Newegg February 22, 2026

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