CD-R: write-once, read-many (data once written cannot be erased); and ii) DR-RW:
the data once written can be erased completely and the same storage device can be
used again for storing different data. A typical disc used in a computer-based CD
drive stores 700 MB. (Wikipedia, 2014)DVD (initially “Digital Video Disc”, then modified to “Digital Versatile Disc”), like a CD, is an optical storage system was rolled out in 1996 as successor to CD. Recordable formats of DVD called DVD-R,was released in 1997 and writable format, called DVD+R,was released in 2002(Wikipedia, 2014). The DVD format provides several configurations of data layers, moving from 2D storage to 3D storage. Each configuration is designed to provide additional storage capacity. Commonly used DVDs (one side- one layer) in contrast to CDs has storage capacity of 4.7 GB.
the data once written can be erased completely and the same storage device can be
used again for storing different data. A typical disc used in a computer-based CD
drive stores 700 MB. (Wikipedia, 2014)DVD (initially “Digital Video Disc”, then modified to “Digital Versatile Disc”), like a CD, is an optical storage system was rolled out in 1996 as successor to CD. Recordable formats of DVD called DVD-R,was released in 1997 and writable format, called DVD+R,was released in 2002(Wikipedia, 2014). The DVD format provides several configurations of data layers, moving from 2D storage to 3D storage. Each configuration is designed to provide additional storage capacity. Commonly used DVDs (one side- one layer) in contrast to CDs has storage capacity of 4.7 GB.
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