What Is DVD [Digital Versatile Disk]

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 CDs 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 a double layer disk.

Advantages of Using DVD (Optical Disk)

• The Optical Disk is cheaper, light in weight, easy to handle, and easy to store data.
• In an 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 to 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 disks are used because they can store huge volumes 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 the data transferring rate is slower in the optical disk as compared to other mediums.
• DVDs can be easily damaged if misused.
• Optical Disk if used many times gets easily damaged or corrupted.