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Main image of Seagate Exos X18 ST18000NM005J 18TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Internal Hard Drive, 512E/4KN SED

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Seagate Exos X18 ST18000NM005J 18TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Internal Hard Drive, 512E/4KN SED

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Options: SAS 12Gb/s

SAS 12Gb/s
SATA 6.0Gb/s

7200 RPM 256MB Cache
SAS 12Gb/s NOT Compatible w/ Desktop PCs
For Enterprise Storage

🔥Don't forget your OS, we have Windows 11 OEM, Download and USB versions available

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Model
Brand	Seagate
Series	Exos X18
Model	ST18000NM005J

Performance
Interface	SAS 12Gb/s
Capacity	18TB
NAND Flash Memory Type	Hard Drive
RPM	7200 RPM
Cache	256MB
Average Latency	4.16ms

Features
Features	Market-leading 18TB 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 Proven enterprise-class reliability backed by 2.5M-hr MTBF rating
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	August 27, 2025

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Seagate Exos X18 ST18000NM005J 18TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Internal Hard Drive, 512E/4KN SED

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Item#: 9SIADU0KK56133

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Seagate Exos X18 ST18000NM005J 18TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Internal Hard Drive, 512E/4KN SED

Learn more about the Seagate ST18000NM005J

Customer Reviews of the Seagate ST18000NM005J

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info