premise: Saw II was released in an analog optical disc storage format.
hypothesis: CD-R ( Compact Disc-Recordable ) is a digital optical disc storage format . CD-RW ( Compact Disc-ReWritable ) is a digital optical disc storage format . DVD ( an abbreviation of `` digital versatile disc '' or `` digital video disc '' ) is a digital optical disc storage format invented and developed by Panasonic , Philips , Sony and Toshiba in 1995 . Saw II . Saw II was released to DVD on and topped charts its first week , selling more than 3 million units .