Grid.org

General Electric Co.'s research division said it had developed data-storage technology
using holograms that could store the content of 100 standard DVDs on a
single disc.

GE said its microholographic material can support 500 gigabytes of
data in a standard DVD-size disc, equivalent to 20 single-layer Blu-ray
discs. GE plans to license the technology to other companies that would
produce the disc and players and expects products based on the
technology to be available in 2012.

http://online.wsj.com/article/SB124088189425962019.html