Stacked Volumetric Optical Disc
The Stacked Volumetric Optical Disc is an optical disc format developed by Hitachi/Maxell, which uses an array of wafer-thin optical discs to allow data storage.
Each "layer" holds around 9.4 GB of information, and the wafers are stacked in layers of 100 or so, giving overall data storage increase of 100× or more.
SVOD might likely be a candidate, along with HVDs, to be a next-generation optical disc standard.
