The Ultrastar Red Pro 3.5" Serial ATA hard drive offers an impressive storage capacity of 18 terabytes, making it ideal for use in Network Attached Storage (NAS) systems. With a data storage interface of SATA III, it ensures fast data transfer rates, while the maximum rotational speed of 7200 RPM provides efficient performance. The hard drive utilizes CMR storage technology, known for its reliability and performance, and features a generous 512 megabyte cache that further optimizes data processing. Weighing 0.69 kilograms and with compact dimensions of 147 millimeters in length and 10.5 centimeters in width, it is both powerful and space-saving. This hard drive is an excellent choice for users who require high storage capacities and reliable performance in a NAS environment.