What Is DVD [Digital Versatile Disk]

DVD stands for Digital Video Disk or Digital Versatile Disk. DVD or optical disk is a standard format for storing digital content for both Personal computers and some electronic products. DVD’s can store every format available DVD as compared to cd can store around 7 times more data. physically both CD and DVD are of same diameter and thickness which is 5.25’’.

DVD comes in 4.7 GB on a single layer and nowadays it comes in 8 GB on double layer disk.

What is DVDDigital Versatile Disk

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Advantages of Using Optical Disk

  • The Optical Disk are cheaper, light in weight, easy to handle, and easy to store data.
  • In Optical Disk data can be almost permanently stored.
  • The optical disk has a very high storage density therefore you can stored huge amount of data.
  • As there is no read/write head there is no risk of head crashing against the disk surface.
  • The optical are usually circular in shape therefore the data is stored in proper order.
  • The DVD are smaller in size therefore needs require less space.
  • You use optical disk as multisession disk (Where you can write data on the disk if there is space available).
  • Double Layer disk are used because it can store huge volume of data

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Limitation of Optical Disk

  • The Optical Disk can almost store data permanently , but once the data recorded in the disk cannot be deleted or erased.(Except Re-writeable disk ).
  • The Speed of data transferring rate is slower in optical disk as compared to other medium.
  • DVD can be easily damaged if misused.
  • Optical Disk if used many times get easily damaged or corrupted.

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