SSD hard disk

In normal hard disk it has moving reading and writing header and also containing a platters which means a moving plate. The headers are located from above of the plates. When the plate is rotating, an electron magnetic field occurs in between the header and the plate. According to that scenario the stored information has red. This characteristic is not satisfied  but stored information by using electrical method (volatile). It is called as SSD hard disk.

These hard disk are expensive than other hard disk which is controlled by using magnetic principles. But it can read and write data quickly. Some hard disk contains both SSD platters and magnetic platters. We called it as Hybrid Disk.