The WD Ultrastar DC HC520 12TB 3.5" SATA 6Gb 7200RPM Enterprise HDD is a high-performance storage solution designed for servers. This HDD features a recording technology of CMR and a rotation speed of 7.2K RPM, providing fast read speeds of up to 255MB/s. With a storage capacity of 12TB and a cache size of 256MB, this unit offers reliable storage for large amounts of data. It is compatible with servers and supports hot plug functionality, making it a versatile and efficient choice for enterprise storage needs. This Western Digital product is part of the Ultrastar DC HC520 product line and is manufactured in Thailand.