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I agree that DVD drives hold much more data than their CD cousins. The CD can hold up to only 700 megabytes, which is small by modern standards while a single-layer DVD can hold up to 4.7 gigabytes and a dual-layer can hold up to 8.5 gigabytes. So, in regard to space, the DVD definitely is the king.

Now as to the advantage of the discs with the -RW designation, whether it is the CD-RW or DVD-RW, it means that the disc can be written, erased, and re-written again with different data. This makes such discs very handy for use as "slave discs" for porting data from place to place or for use as backups. Being able to reuse the discs also helps one's budget since the discs do not need to be tossed away after a single burn session. They can be rewritten (at least in theory) up to 1000 times each.

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10y ago

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