What Is DVD [Digital Versatile Disk]

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what is dvd

What is DVD: 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.

DVDs can store every format available DVDs as compared to cd can store around 7 times more data. physically both CD and DVD are of the 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 DVD
Digital Versatile Disk {DVD}

Advantages of Using DVD (Optical Disk)

  • The Optical Disk is 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 store a huge amount of data.
  • As there is no read/write head there is no risk of the head crashing against the disk surface.
  • The optical is usually circular in shape therefore the data is stored in proper order.
  • The DVD is smaller in size, therefore, needs require less space.
  • You use the optical disk as the 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 DVD (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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