How much information can a DVD disc store?
A single layer DVD disc can store up to 4.7 gigabytes of memory, and double-sided DVD discs can store up to twice as much (9.4 gigabytes of memory). In addition, a single layer DVD disc can play up to 9 hours of music! That is equivalent to seven times the capacity of a CD-ROM or 3,400 floppy discs!