SSDs have no spinning platters, moving read/write heads or any other moving parts common to traditional mechanical hard disks. Instead, data is stored in integrated circuits. An SSD's solid-state design means you don't have to worry about losing data because of platter crashes or mechanical failure

A solid-state drive (SSD) is a new generation of storage device used in computers. SSDs use flash-based memory, which is much faster than a traditional mechanical hard disk. Upgrading to an SSD is one of the best ways to speed up your computer