Bring high capacity storage to your data center, enterprise backup solution, or surveillance setup with the 18TB Exos X18 7200 rpm SAS III 3.5" Internal HDD from Seagate. Designed for big data and enterprise applications, this 3.5" 18TB HDD features a SAS III 12 Gb/s interface and a speed of 7200 rpm for transfers at up to 270 MB/s. Furthermore, this drive boasts a 2.5 million hour Mean Time Between Failure (MTBF) and 0.35% Annualized Failure Rate (AFR) for resilient performance.