DVD-R vs. DVD+R
Key Differences
What is DVD-R?
DVD-R refers to a non-rewritable digital optical disc storage format. The non-rewritable means it can be written once and read arbitrarily many times. It has the capacity of 4.7 GB. However, 8.5 GB dual layer version named DVD-R DL has been also developed by the Pioneer that was launched in 2005. It is supported by the over 93% of DVD players and most of the DVD-ROMs and is approved by the DVD Forum. DVD-R discs are composed of two 0.6 mm acrylic discs, bonded with an adhesive to each other. Once acrylic disc have laser guiding groove and is coated with the recording dye and a silver alloy or gold reflector. The other one is an ungrooved ‘dummy’ disc to assure mechanical stability of the sandwich structure and compatibility with the compact disc standard geometry that requires a total disc thickness of about 1.2 mm.
What is DVD+R?
DVD-R refers to a non-rewritable digital optical disc storage format. The non-rewritable means it can be written once and read arbitrarily many times. It has the capacity of 4.7 GB. It is used for non-volatile data storage, audio, or video applications. Its format is similar to DVD-R format, however, not compatible. Like DVD-R, it carry up to 8.5 GB of data. DVD+R has more robust error management system than DVD-R that allows for more accurate burning to media. DVD+R is compatible with about 89% of DVD players and most of the DVD-ROMs. That’s mean around 11% of standalone DVD video player and DVD ROM drives are not fully compatible with the DVD+R format. It provides more accurate additional session linking methods as compare to DVD-R.
