What is DVD-RAM?
A DVD-RAM is a DVD designed for random access memory, for the quick and easy storage and retrieval of data. The design offers a great deal of memory storage capacity for data files, and its original intended use got around the problems associated with video copy protection although the discs can also be used to record video. In addition to a groove molded into a slice of polycarbonate that is bonded to a second slice, there are also pits used for address information so that a drive can locate files very quickly. Recording is done in both the groove and the land between the grooves so that the grooves can be a bit wider without reducing total recording capacity. The disc turns at the same rate of speed all the time, a rate referred to as CAV for “constant angular velocity.” The most unusual aspect of the DVD-RAM is that it is enclosed in a protective cartridge. The double-sided version (Type I) cannot be removed from the cartridge, but the single-sided version (Type II) can be removed (
