Seagate Exos X18 18 TB (ST18000NM000J)
3.5" 18 TB 7200 RPM 256 MB Serial ATA 6 Gbit/s 512e/4Kn hard drive (bulk)
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Increased speed and capacity, for a lower total cost of ownership
The Seagate Exos X18 18TB is a helium-sealed drive that will deliver optimal performance, minimal costs and rock-solid reliability for your installations. Designed for cloud applications and ensuring continuous operation, this drive has an average time between failures of 2.5 million hours.

Speed where you need it
With one of the best response times in the industry, the Seagate Exos X18 3.5 HDD (helium-filled) 18TB drive enables ultra-fast data transfers. This solution will meet your storage needs with minimal footprint for your data centre.
With innovative technological advances such as PowerBalance, PowerChoice and RAID Rebuild, you can customise your mass storage needs for a significant improvement in your total cost of ownership.
By creating maximum-density servers and storage solutions with Seagate Exos X18 3.5" 18TB HDDs, you can be confident that they will adapt to your growing data needs and deliver predictable, consistent response times.
Application areas
- Large-scale scalable applications/cloud data centres
- Large, scalable data centres
- Big data applications
- High-capacity dense RAID storage
- Mid-range external storage arrays for enterprises
- Distributed file systems, including Hadoop and Ceph
- Enterprise data backup and recovery: D2D, virtual tapes
- Centralised monitoring

Select your criteria
General information |
Product name |
Seagate Exos X18 18 TB (ST18000NM000J) |
Brand |
Seagate Technology | |
Model |
ST18000NM000J | |
Main characteristics |
Interface with the computer |
Serial ATA 6Gb/s (SATA Revision 3) |
Hard drive format |
3" 1/2 | |
Capacity |
18 TB | |
Performance |
Rotation speed |
7200 RPM |
Cache size |
256 MB | |
Recording technology |
CMR | |
Design |
Hard drive type |
HDD (Hard Disk Drive) |
Use |
for server | |
Physical characteristics |
Width |
101.85 mm |
Height |
26.1 mm | |
Depth |
147 mm | |
Weight |
650 g | |
Warranties |
Commercial warranty |
Seller 2 years
|
Legal warranty |
See terms & conditions
|
|
Safety Information |
Responsible person |
Seagate Technology (Netherlands) B.V. |
Postal address |
Tupolevlaan 105, 1119 PA Schiphol-Rijk, Netherlands | |
Electronic Address |
Click here
|
Product referenced on 15 Dec 2025
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