Optical storage - computer architecture:
Optical storage, the distinctive Optical disc, stores information in deformities on the surface of a circular disc and reads this information by revealing the surface with a observing the reflection with laser diode. Optical disc storage is non-volatile storage. The deformities can be enduring (read only media), formed only one time (write once media) or reversible (recordable or read/write media). Following forms are now in common use:
Magneto-optical disc storage is optical disc storage wherever the magnetic state on a ferromagnetic surface stores information. The information is read optically and written by combining optical methods and magnetic and. Magneto-optical disc storage is non-volatile storage, slow write, sequential access, fast read storage and can be used for tertiary and off-line storage.