DVD+R
DVD+R is an optical disc format that has the capability to hold up to 4.7GB (4.377 GiB). With only slightly less capacity than DVD-R discs at 4.382 GiB, the DVD+R format was introduced in 2002 by the DVD+RW Alliance, a coalition of corporations. In 2003, with the implementation of double layer technology, DVD+R DL (double layer) discs were demonstrated to hold up to 8.5GB of data. DVD+R discs are often not supported by older, less advanced DVD players. There are, however, hybrid drives (both computer drives and DVD players) labeled DVD±R that are able to read/write both the plus and minus formats.
The two formats differ in a number of ways including the heftier error management system with DVD+R, which contributes to the higher accuracy of burning information to the disc. This key difference means fewer damaged or unusable DVDs as a result of buffer under-run in comparison to DVD-R discs.
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