Disadvantages of Optical Storage Systems
- It is read-only (permanent) storage medium. Data once recorded, cannot be erased and hence, the optical disks cannot be reused.
- The data access speed for optical disks is slower than magnetic disks.
- It requires a more complicated drive mechanism than magnetic disks.
Optical Storage Systems
THe Optical memory is an electronic storage medium that uses a laser beam to store and retrieve digital (binary) data. In optical storage technology, a laser beam encodes digital data on an optical disc or laser disc in the form of tiny pits arranged in a spiral pattern on the surface of the disc. Digital Versatile Disk (DVD), Compact Disk (CD) and Blu-Ray Disk are the examples of optical storage device.
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