An optical-disk storage system consists of a metallic or plastic disk coated with a highly reflective material. It uses laser beam technology for reading/writing of data from/to disk surface. Optical disks are also known as laser disks or optical laser disks because they use laser beam technology for data read/write. Modern computer of their capability to store very large amount of data in a limited space.
Optical disk - An optical disk is any computer disk that uses optical storage techniques and technology to read and write data. It is a storage device in which optical (light) energy is used. It is a computer storage disk that stores data digitally and uses laser beams to read and write data. It uses the optical technology in which laser light is centred to the spinning disks.
An optical disk is primarily used as a portable and secondary storage device. It can store more data than the previous generation of magnetic storage media, and has a relatively longer lifespan. Compact disks (CD), digital versatile/video disks (DVD) and Blu-ray disks are currently the most commonly used forms of optical disks. These disks are generally used to -
Distribute software to customers
Store large amounts of data such as music, images and videos
Transfer data to different computers or devices
Back up data from a local machine
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