1, solid state hard disk, referred to as solid disk, solid state hard disk with solid-state electronic storage chip array and made of hard disk, by the control unit and storage unit. Solid state hard disk in the interface specifications and definitions, functions and methods of use with the ordinary hard disk of the exact same, in the product shape and size is also completely consistent with the ordinary hard disk. It is widely used in military, automotive, industrial control, video surveillance, network monitoring, network terminals, power, medical, aviation, navigation equipment and other fields.
2, Western Digital hard disk, referred to as WD, is a hard disk produced by the United States Western Digital Corporation. Western Digital is a globally recognized hard disk manufacturer. The company was founded in 1970, and began designing and producing hard drives in 1988. Headquartered in California, the United States, is one of the oldest hard disk manufacturers, but also one of the founders of the IDE interface. wd has a global workforce of about twenty-three thousand people.