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. Maximum Storage Capacity for Highest Rack Space Efficiency 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 Proven enterprise-class reliability backed by 5-year limited **and 2.5M-hr MTBF rating