Delivering maximum storage capacity with the highest rack-space efficiency.
Scalable. Responsive. Innovative. Powerful performance with proven technology — Seagate’s Exos X20 drives are built off the platform that’s shipped millions globally and deployed in leading cloud service provider solutions — making them the most sought after drives in our datasphere. Designed with the highest rack-space efficiency and protected with Seagate Secure, Exos X20 offers extreme market-leading capacity, earning customer confidence by delivering trusted peace of mind.
Superior Reliability Enterprise-class drives with a 550 TB/year workload rating and 2.5M-hr MTBF to meet the most demanding storage requirements.
Customisation Power Options PowerChoice and PowerBalance for optimised power consumption when in use and idle — customisable to fit your needs.
Amazing Performance Advanced write caching coupled with up to 285 MB/s data transfer rates provides a boost in performance without compromising on capacity.
Advanced Data Security Password protection and AES-256 hardware encryption with Seagate Secure — for drives you can depend on.
Seagate Enterprise Exos X20. HDD capacity: 18 TB, HDD speed: 7200 RPM, HDD size: 3.5", Interface: Serial ATA III
HDD capacity
18 TB
HDD speed
7200 RPM
HDD size
3.5"
Interface
Serial ATA III
Type
HDD
Component for
PC
HDD interface transfer rate
6 Gbit/s
HDD sustained transfer rate
272 MiB/s
HDD average transfer rate
285 MB/s
Mean time between failures (MTBF)
2500000 h
Power consumption (typical)
5.4 W
Power consumption (read)
9.4 W
Power consumption (write)
6.4 W
Operating voltage
5 / 12 V
Operating temperature (T-T)
5 - 60 °C
Non-operating vibration
2.27 G
Operating shock
40 G
Non-operating shock
200 G
Width
4.01" (101.8 mm)
Height
1.03" (26.1 mm)
Depth
5.79" (147 mm)
Weight
23.6 oz (670 g)
Quantity per pack
1 pc(s)
Harmonized System (HS) code
84717050
Product Details
2025-12-24
New
Data sheet
Type
HDD
Quantity per pack
1 pc(s)
Interface
Serial ATA III
Component for
PC
Weight
23.6 oz (670 g)
Harmonized System (HS) code
84717050
HDD capacity
18 TB
HDD speed
7200 RPM
HDD size
3.5"
HDD interface transfer rate
6 Gbit/s
Operating voltage
5 / 12 V
Width
4.01" (101.8 mm)
Height
1.03" (26.1 mm)
Depth
5.79" (147 mm)
Operating temperature (T-T)
5 - 60 °C
Power consumption (typical)
5.4 W
Mean time between failures (MTBF)
2500000 h
Power consumption (read)
9.4 W
Power consumption (write)
6.4 W
Operating shock
40 G
Non-operating vibration
2.27 G
Non-operating shock
200 G
HDD sustained transfer rate
272 MiB/s
HDD average transfer rate
285 MB/s
Specific References
UPC
763649153185
EAN13
0763649153185
MPN
ST18000NM004D
Seagate Enterprise Exos X20, 18 TB, 7200 RPM, 3.5", Serial ATA III