The middle letter in DVD stands for versatile,
The middle letter in DVD stands for versatile, and the 4.7GB capacity of write-once (DVD-R and DVD+R) and rewritable (DVD-RW and DVD+RW) media makes such discs versatile indeed. Write-once DVDs are excellent for archiving important data, and rewritable DVD media can serve as extra 4.7GB drives, for on-the-fly backups or everyday storage. DVD drives also read standard CD-ROMs, and write both CD-R and CD-RW discs.