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Row of data racks, with one open to show hard drives and an internal screen highlighting the system’s storage components.

Scalable. Responsive. Innovative.

Seagate Exos® X18 enterprise hard drives are engineered for the demands of hyperscale and enterprise data environments. Offering massive capacity, high-speed data access, and advanced reliability, they empower businesses to scale efficiently, respond quickly, and innovate continuously — no matter the workload.

Clock icon with circular arrow sits below 2.5M MTBF, showing Exos X18 hard drive’s 2.5 million-hour mean time between failure.

Reliable enterprise data storage.

Exos X18 enterprise drives are built for 24×7 performance, with a 2.5-million-hour mean time between failure (MTBF) metric and support for workloads up to 550 TB per year. Designed for durability and consistency, they feature robust error recovery, enhanced caching, and helium-sealed technology to keep your data secure, available and always ready.

Series of plugs in the back of a server rack indicate power performance and energy usage options.

Energy efficient enterprise hard drives.

The Seagate Exos X18 features PowerChoice™ and PowerBalance™ technologies to optimise power consumption during both active and idle states. With customisable settings, you can fine-tune performance and energy usage to match your workload — improving efficiency without compromising reliability.

Two arrow icons point in opposite direction beneath 270 MB/s, signifying the sustained data transfer rate of the Exos X18 hard drive.

Advanced performance for demanding workloads.

Exos X18 data centre hard drives deliver up to 270 MB/s sustained data transfer rates and features advanced write caching for faster, more efficient data handling. This powerful combination boosts performance without sacrificing capacity — ensuring even your most demanding workloads run smoothly and reliably at scale.

Gold shield outline frames Seagate Secure wording in white on black background with binary code, symbolizing Seagate’s data security feature.

Advanced data security.

Seagate Exos X18 offers robust protection with AES-256 hardware encryption and password security powered by Seagate Secure™ technology. Designed to meet regulatory and corporate compliance requirements, it safeguards sensitive data at rest and during disposal. With secure erase options and firmware-based protection, you can trust your data is safe — every step of the way.

Exos X18 hard drive FAQs.

Do you have questions regarding the Exos X18 18 TB hard drive? We have it covered. Below are answers to frequently asked questions about compatibility, performance and setup.

What storage capacities do the Exos X18 hard drives come in?

Seagate Exos X18 hard drives are available in high-capacity options, with models offering up to 18 TB of storage. These drives are designed for enterprise-scale workloads, making them ideal for data centres and large-scale storage applications that require maximum capacity and efficiency.

What interface(s) does the Exos X18 series of enterprise hard drives support?

Seagate Exos X18 series supports both SATA 6 Gb/s and SAS 12 Gb/s interfaces, providing flexibility for integration into a wide range of enterprise storage systems. Whether you’re building out high-capacity servers or upgrading existing infrastructure, the Exos X18 offers the connectivity options to match your needs.

What is the spindle speed of the Exos X18?

Seagate Exos X18 hard drives spin at 7,200 RPM, providing reliable and high-performance data access for demanding and complex enterprise applications. This spindle speed ensures quick read/write operations while maintaining consistent performance over long periods of continuous use. Combined with advanced features like high-capacity storage and error recovery, the Exos X18 is optimised for 24×7 data centre environments.

What is the workload rating for the Exos X18?

Seagate Exos X18 series is engineered for demanding enterprise environments, supporting a maximum workload of up to 550 TB per year. This rating means optimal performance and reliability under typical 24×7 operations. Exceeding this annualised workload may reduce the drive’s MTBF and impact overall reliability.

What is the MTBF for the Exos X18?

Seagate Exos X18 data centre hard drives are engineered for exceptional reliability, boasting an MTBF of 2.5 million hours. This durability rating underscores their suitability for demanding 24×7 enterprise environments, including hyperscale data centres and high-capacity storage systems. With such a high MTBF, the Exos X18 is designed to deliver consistent performance and minimise downtime over extended operational lifespans.

Is the Exos X18 compatible with NAS systems?

Yes, Seagate Exos X18 is compatible with network attached storage (NAS) systems. Its high capacity, reliability, and support for both SATA and SAS interfaces make it well-suited for NAS environments that require large storage volumes and consistent performance. Exos X18 is ideal for businesses that need scalable, high-density storage for file sharing, backup and archiving in a networked setting.

What are the types of workloads most suitable for Exos X18?

Seagate Exos X18 is most suitable for high-capacity, enterprise-level workloads that require 24×7 performance and reliability. These include:

Hyperscale data centres that handle massive amounts of data storage and processing.
Cloud storage for supporting large-scale cloud environments with high throughput and low latency.
Big data and analytics for storing and managing large datasets for real-time analysis.
Surveillance and video storage of high-resolution video files with consistent performance.
Archiving and backup to provide reliable, long-term storage for critical business data.

Its 550 TB/year workload rating allows it to perform well under heavy, continuous use.

How does Exos X18 handle high vibration environments?

Seagate Exos X18 is designed to perform reliably in high-vibration environments, thanks to its built-in features that enhance stability and durability. It incorporates Seagate rotational vibration (RV) sensors, which help the drive detect and compensate for vibrations. This promotes consistent performance even in multi-drive systems or densely packed data centres, where vibration levels can be higher. This feature makes the Exos X18 suitable for enterprise environments that require high-density storage in challenging conditions.