What is a solid state drive and what is the relationship between the solid state drive and the sff-8639 interface

Solid-state hard disk, referred to as solid-state disk, is a hard disk made of solid-state electronic storage chip array, which is composed of a control unit and a storage unit (flash chip, dram chip). 

The specification and definition of the interface, the function and the usage method of the solid-state drive are exactly the same as those of the ordinary hard disk, and the product shape and size are also completely consistent with the ordinary hard disk. It is widely used in military, vehicle, industrial control, video surveillance, network monitoring, network terminal, electric power, medical, aviation, navigation equipment and other fields.

Its chip has a wide operating temperature range, commercial products (0, 70C) and industrial products (-40, 85℃). Because solid-state drive technology is different from traditional hard disk technology, many emerging memory manufacturers have emerged. Manufacturers only need to buy nand memory and cooperate with appropriate control chips to manufacture solid-state drives. 

The new generation of solid state drives generally use sata 2 interface, sata-3 interface, sas interface > insata to Fl, pci-e interface, ngff interface, cfast interface and sff-8639 interface.