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Product datasheet

Seagate  SATA 6Gb/s  New / refurbished 

Seagate Exos X18 18TB Enterprise HDD (ST18000NM000J)

18TB CMR enterprise hard drive with helium sealing, 7200 RPM and 256MB cache for dense data-centre and NAS storage.

Macro view of an enterprise hard drive platter surface
Platter surface, macro — what a full surface scan verifies

The Seagate Exos X18 increases capacity without changing the deployment model: 18TB in a standard 3.5-inch SATA form factor, CMR recording, and the same 550TB/year workload class as the Exos X16.

It is a common choice for expanding existing Exos-based arrays, where matching spindle speed, recording technology and workload rating keeps performance consistent across the set.

Specifications

Field Value
Part number ST18000NM000J
Brand Seagate
Series Exos X18
Capacity 18TB
Interface SATA 6Gb/s
Form factor 3.5-inch
Rotational speed 7200 RPM
Cache / DRAM 256MB
Endurance (DWPD / TBW) 550TB/year workload rating
Condition options New / refurbished
Typical use cases Data centre, NAS expansion, backup

Specifications are indicative and taken from manufacturer datasheets. Confirm the exact revision with our team before design-in.

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