Solid State Disk (Solid State Disk) with solid-state electronic storage chip array and made of hard disk, by the control unit and storage unit (FLASH chip, DRAM chip). Solid State Disk interface specifications and definitions, functions and methods of use with the ordinary hard disk is identical, 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.