The recording is performed at a given temperature and the cancellation of a higher layer writable to allow uniform and ready to return to a new writing. Each DVD-RW is rewritable approximately 1000 times, such as a CD-RW drive, and its use is mainly for domestic use (such as video recording).
A DVD + RW (DVD + Rewritable) is a rewritable optical disc with storage capacity equivalent to a DVD + R, typically 4.7 GB (interpreted as 4.7 × ≈ 109, actually 2295104 sectors of 2048 bytes each) .
The format was developed by a coalition of corporations, known as the DVD + RW Alliance, in late 1997, although the standard was abandoned until 2001 when it was extensively revised and expanded capacity of 2.8 GB to 4.7 GB. The recognition for developing the standard is often attributed unilaterally to Philips, a member of the DVD + RW Alliance.
Although DVD + RW has not yet been approved by the DVD Forum, the format is too popular to be ignored by manufacturers, and thus, DVD + RW discs can be played in 3 out of 4 DVD today day.