Seagate Enterprise ST18000NM004J internal hard drive 18 TB 7200 RPM 256 MB 3.5″ SAS
- Market-leading 18 TB 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 centre and massive scale-out data centre applications
 
- Hyperscale SATA model tuned for large data transfers and low latency PowerBalance™ feature optimises Watts/TB
 
- Maximise 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
 
 
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.
 
| Features | 
| Mean time between failures (MTBF) | 
2500000 h | 
| Rotational Vibration (RV) sensors | 
Yes | 
| Average latency | 
4.16 ms | 
| HDD average transfer rate | 
270 MB/s | 
| HDD sustained transfer rate | 
258 MiB/s | 
| HDD interface transfer rate | 
12 Gbit/s | 
| Storage drive buffer size | 
256 MB | 
| Hot-swap | 
Yes | 
| Component for | 
Disk array | 
| Type | 
HDD | 
| Interface | 
SAS | 
| HDD size | 
3.5″ | 
| HDD speed | 
7200 RPM | 
| HDD capacity | 
18 TB | 
| Power | 
| Operating voltage | 
5 / 12 V | 
| Power consumption (read) | 
9.9 W | 
| Power consumption (write) | 
7 W | 
| Power consumption (idle) | 
5.8 W | 
| General | 
| Product family | 
Enterprise | 
| Product series | 
Exos X18 | 
| Operational conditions | 
| Non-operating shock | 
200 G | 
| Operating shock | 
50 G | 
| Non-operating vibration | 
2.27 G | 
| Operating temperature (T-T) | 
5 – 60 °C | 
| Weight & dimensions | 
| Weight | 
670 g | 
| Height | 
26.1 mm | 
| Depth | 
147 mm | 
| Width | 
101.8 mm | 
| Logistics data | 
| Harmonized System (HS) code | 
84717050 | 
 
- Seagate | Exos: Best-in-Class Enterprise Hard Drives