The so-called solid-state hard disk (SSD) is a hard disk made of solid-state electronic memory chip array, which consists of a control unit and a memory unit (FLASH chip and DRAM chip). Solid-state hard disk is exactly the same as ordinary hard disk in interface specification and definition, function and application mode, and the product shape and size are also exactly the same as ordinary hard disk. Widely used in military, vehicle, industrial control, video monitoring, network monitoring, network terminals, electric power, medical care, aviation, navigation equipment and other fields.
Solid-state hard disk has the characteristics of fast reading and writing speed, light weight, low energy consumption and small size that traditional mechanical hard disk does not have, and its shortcomings are also obvious. It is still expensive, with low capacity, and once the hardware is destroyed, it is difficult to recover the data. And some people think that SSD's durability (life) is relatively short.