Types Of DVD

DVD is the meaning of:
"Digital Versatile Disc or Digital Video Disc"

DVD is an optical disc storage media format, invented and developed by Philips, Sony, Toshiba, and Panasonic in 1995. DVDs offer higher storage capacity than compact discs while having the same dimensions.
There is a many types of a DVD we have:
1-DVD-5: on one side, single layer 
Storage capacity 4.7GB

2-DVD-9: on one side, two layers, 8.54 GB, called DVD-R DL or DVD + R DL

3-DVD-10: two instances, a single layer on both sides, 9.4 GB

4-DVD-14: two instances, two layers on one side and one layer on the other side, 13.24 GB 

This type is not a trader in the markets
5-DVD-18: two instances, two layers, 17.08 GB (Double-Sided Dual Layer) As well as (HD DVD) High-Density DVD Cylinder high-resolution digital video And optical disks are designed for high-density information storage and high-definition video. Area of ​​the cylinder 15 GB (single layer) and 30 GB (two layers). This type of second-generation DVD. Can a disk capacity of 15 GB to store high-definition film of a four-hour on one of the layers. Has been producing this type of disc in 2003 based on technology "Advanced Optical Disc" produced by Toshiba. There is also a DVD 8 cm in length (3.5) inches, can save 1.5 Gigabit.
And used in some video cameras

DVD-9: on one side, two layers, 8.54 GB, called DVD-R DL or DVD + R DL

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