DVD Writers : The CCL Guide

DVD Writers enable you to read DVD’s and also write to DVD Recordable (DVD+R and DVD-R) and DVD Rewritable (DVD+RW and DVD-RW) disks.

If you’re looking to produce your own DVD movies or backing up your documents then you’ll need a DVD writer.

For more detailed information on the different DVD formats, read Wikipedia's articles: DVD-R | DVD+R | DVD-RW | DVD+RW | DVD-RAM