Dual Layer Dvd: 8.5 Gb Dvd

Wednesday, 17 October 2012

8.5 Gb Dvd

DVD+R discs carry up to 8.5 GB of data, approximately the same as DVD-R.[3] Unlike DVD+RW discs, DVD+R discs can only be written to once. Because of this, DVD+R discs are suited to applications such as non-volatile data storage, audio, or video. This can cause confusion because the DVD+RW Alliance logo is a stylized 'RW'. Thus, a DVD+R disc may have the RW logo, but it is not rewritable.The DVD+R format is divergent from the DVD-R format. Hybrid drives that can handle both, often labeled 'DVD±RW', are very popular since there is not a single standard for recordable DVDs. There are a number of significant technical differences between the 'dash' and the 'plus' format, although most users would not notice the difference. One example is that the DVD+R style Address In Pregroove (ADIP) system of tracking and speed control is less susceptible to interference and error, which makes the ADIP system more accurate at higher speeds than the Land Pre Pit (LPP) system used by DVD-R. In addition, DVD+R(W) has a more robust error management system than DVD-R(W), allowing for more accurate burning to media, independent of the quality of the media.