Thus, "R" format discs are suited to applications such as non-volatile data storage, audio, or video. RW: Rewritable. You can write to these discs, erase them, and write to them again. RW discs are commonly used to store data in a volatile format, such as when creating backups or collections of files.
They are also used for home DVD video recorders. They're all mm in diameter and 1. DVD-R use tiny marks along the grooves in the discs, called "land prepits", to determine the laser position. They are media storages and don't confuse them. Whereas, DVD-9 is advanced version, double layered, has a capacity of 7. After learning about the difference and comparison, here we would like to recommend you the best DVD creator software in case you need to create DVD disc.
Besides, it can create personalized DVD menu with various menu templates. What's more, you are allowed to add audio tracks, subtitles and chapters to DVDs. Step 1.
Technological Differences Write once formats use a single write laser to change a dye layer affecting the opacity of the dye. Follow Share Cite Authors. Related Comparisons. Contribute to Diffen Edit or create new comparisons in your area of expertise. Log in ». Terms of use Privacy policy. Only once i. The disc is known to store up to 4. Also know that both the discs were released in As you can already understand by its name, it is a circular disc which is mm in diameter and has a thickness of 1.
The only remarkable difference separating the discs is that DVD-RW can be erased and written again and again, as many times you wish. The data is stored in the disc in digital form only. This too is an optical storage device. The disc is extensively used to install various operating systems in computers. Another notable feature in DVD-RW is that the data once uploaded in this disc, remains there forever, unless voluntarily erased by user. However, the difference is not much.
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