Digital Versatile Disk. This is a form of storage media which uses the same technology as CD-ROM but has a higher density of pits on each layer of the disk. A DVD can be a dual sided media and the technology also allows the DVD to have multiple layers, creating an increase in storage capacity. A DVD has the ability to store large amounts of data up to 4.7 GB per side for a single layer disk. See Advanced Intelligent Tape (AIT), Digital Audio Tape (DAT), Digital Linear Tape (DLT), Linear Tape Open (LTO), Jukebox and Magneto Optical Disk (MOD).