DVD (Digital VersatileDisc)

Starting in 1983 data storage system in the optical disc was introduced with the launch of the Digital Audio Compact Disc. From that time on the optical disc storage technology develops. CD-ROM (Compact Disc Read Only Memory) is a medium for storing data or other information in a number of very large (more than 600 megabytes). Much greater if we compare it with the floppy disk (1.4 MB)
DVD is the next generation of storage technology using optical disc media. Kapastias DVD has a much larger than ordinary CD-ROM, which reached 9 Gbytes. DVD technology is now being used widely by major music companies and film, making it the most popular electronic products within 3 years since first introduced.
DVD-ROM technology development even faster than CD-ROM. 1x DVD-ROM allows the average data transfer 1321 MB / s with an average burst transfer of 12 MB / s. The bigger the cache (memory buffer) is owned by DVD-ROM drive, the faster delivery of data that can be done.DVD provides a format that can be written only once or more, called the Recordable DVD, and has various versions, namely: DVD-R for General, only once writing DVD-R for Authoring, only once writing DVD-RAM, can be written DVD-RW repeatedly, repeatedly writable DVD + R, only writing once every version of DVD recorders can read DVD-ROM discs.