Memorex DVD+R offer 120 minutes of video storage in sp mode (240 minutes in ep mode) or 4.7GB of HD data storage, with up to a 16x write speed. Memorex DVD-R Media is capable of producing pre-mastering discs and is ideal for high volume data recording, archiving, and playback. By using the DVD+R format, information is permanently recorded and cannot be altered or erased.