CD-R+and+DVD-R

=** kkkkkkkkkkkkkk k **= = __CD-R and DVD-R__ =


 * [[image:Compact_Disc-_Recordable.png width="142" height="98"]]=** A CD-R stands for //Compact Disc - Recordable.// It is a variation of the Compact Disc. CD-R is a Write Once Read Many (WORM) optical medium. A CD-R retains a high level of compatibility with standard CD readers. The standard 120 mm disc has a storage capacity of 74 minutes of audio or 650 MB of data.

hh hmmmmmmm h = The erasing of CD-Rs are extremely hard. This makes it a serious security issue if it contains sensitive data. Destroying the data requires physically destroying the disc or data layer. CD-Rs record music downloads from the internet. //= DVD-R stands for Digital Versatile Disc - Recordable.// A DVD-R typically has a storage capacity of 4.71 GB. A DVD-R has 6.4 times the capacity of a CD-R. Data on a DVD-R cannot be changed. DVD-Rs record movies and television programs.

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