Seagate manufactures hard drives that specifically address the demand for hyperscale cloud scalability. As the flagship of the Seagate® X class, the Exos® X18 enterprise hard drives are the highest-capacity hard drives in the fleet.

Exos X Series Hard Drives
The most scalable drives in the datasphere, Exos X series hard drives integrate the latest technology in support of a secure and reliable cloud data centre.

Scalable. Responsive. Innovative
Designed to handle the most rigorous workloads, the Seagate Exos X series enterprise class drives are perfect, high-reliability solutions for servers, storage systems, and business-centric NAS systems. Whatever your applications, there’s an Exos drive for it.

Weight & dimensions
Width	101.8 mm
Height	26.1 mm
Depth	147 mm
Weight	670 g
Power
Power consumption (read)	9.9 W
Power consumption (write)	7 W
Power consumption (idle)	5.8 W
Operating voltage	5 / 12 V
Operational conditions
Operating temperature (T-T)	5 - 60 °C
Non-operating vibration	2.27 G
Operating shock	50 G
Non-operating shock	200 G
Features
HDD size	3.5"
HDD capacity	18 TB
HDD speed	7200 RPM
Interface	SAS
Type	HDD
Component for	Disk array
Hot-swap	Yes
Storage drive buffer size	256 MB
HDD interface transfer rate	12 Gbit/s
HDD sustained transfer rate	258 MiB/s
HDD average transfer rate	270 MB/s
Average latency	4.16 ms
Rotational Vibration (RV) sensors	Yes
Mean time between failures (MTBF)	2500000 h
Logistics data
Harmonized System (HS) code	84717050