DVD+R is part of optical disc recording technologies. It is a format for optical disc data storage that utilizes digital recording. It is similar to, but incompatible with, the older DVD-R standard. A DVD+R is a write-once optical disc with 4.7 gigabytes (GB) of storage, generally used for non-volatile data storage or video applications.
The DVD+R format was developed by a coalition of corporations—now known as the DVD+RW Alliance—in mid-2002 (though most of the initial advocacy was from Sony). The DVD+R format competes with the DVD-R format, which is developed by the DVD Forum. The DVD Forum initially did not approve of the DVD+R format and claimed that the DVD+R format was not an official DVD format until January 25, 2008.
In October 2003, it was demonstrated that double layer technology could be used with a DVD+R disc to nearly double the capacity to 8.5 GB per disc. Manufacturers have incorporated this technology into commercial devices since mid-2004.
As of 2007, the recordable DVD market still shows little sign of settling down in favor of either format. Since almost all new DVD writers can record to both formats, this is not an issue for most people. When creating DVDs for distribution (where the playing unit is unknown or older), using the DVD-R format is preferable, because most older (up to 2004) standalone DVD video players and DVD ROM drives cannot read discs in the later DVD+R format.
On 25 January 2008, DVD6C officially accepted DVD+R and DVD+RW by adding them to its list of licensable DVD products.