What is DVD-RW

DVD-RWDVD-RW is a rewritable optical disc which has a typical storage of 4.7 gigabytes. Its primary advantage is its ability to erase and rewrite data. It is most suitable for volatile data such as back ups or collection of files. One advantage also of using this disc is if there are writing error in recording data, the disc can be reused again by erasing the faulty data.