Advantages and Disadvantages of Optical Storage Devices


They are non- volatile which means that the memory can be retained even when the power is turned off
Durability - With proper care, optical media can last a long time, depending on what kind of optical media you choose.

Great for archiving - Several forms of optical media are write-once read-many, which means that when data is written to them, they cannot be reused. This is excellent for archiving because data is preserved permanently with no possibility of being overwritten.

Transportability - Optical media are widely used on other platforms, including the PC. For example, data written on a DVD-RAM can be read on a PC or any other system with an optical device and the same file system.

Random access - Optical media provide the capability to pinpoint a particular piece of data stored on it, independent of the other data on the volume or the order in which that data was stored on the volume.


  • WORM discs are permanent
  • Optical discs require special drives to read/write.
  • Optical storage does not provide enough data storage in comparison to other storage technologies
  • Optical storage is expensive per GB/TB in comparison to other technologies including disruptive formats that offer convenience over cost.
  • Optical storage rewritable formats suffer from compatibility issues between drives.
  • Consumer based formats like CD-R and DVD-R, BD-R do not have a formal method of grading quality of discs. There are no standards for longevity tests.