The 18TB Exos X18 7200 rpm SATA III 6 Gb/s 3.5" Internal HDD from Seagate is a high-performance, large-capacity drive designed for data storage. It's suitable for engineering workstations, network servers, mainframes, supercomputers, and other demanding tasks that require 24/7 operation. This 7200 rpm drive utilizes the SATA III 6 Gb/s interface for data transfer rates of up to 270 MB/s. Moreover, as a professional-grade drive, it has an MTBF rating of 2.5 million hours as well as built-in digital sensors to ensure optimal performance, PowerBalance for lower power consumption, and a helium seal for lower power, weight, and increased durability and leak protection.