General Electric says it has achieved a breakthrough in digital storage technology that will allow standard-size discs to hold the equivalent of 100 DVDs.

The storage advance, which G.E. is announcing on Monday, is just a laboratory success at this stage. The new technology must be made to work in products that can be mass-produced at affordable prices.

But optical storage experts and industry analysts who were told of the development said it held the promise of being a big step forward in digital storage with a wide range of potential uses in commercial, scientific and consumer markets.

“This could be the next generation of low-cost storage,” said Richard Doherty, an analyst at Envisioneering, a technology research firm.

The promising work by the G.E. researchers is in the field of holographic storage. Holography is an optical process that stores not only three-dimensional images like the ones placed on many credit cards for security purposes, but the 1’s and 0’s of digital data as well.

The data is encoded in light patterns that are stored in light-sensitive material. The holograms act like microscopic mirrors that refract light patterns when a laser shines on them, and so each hologram’s recorded data can then be retrieved and deciphered.

www.nytimes.com/2009/04/27/technology/business-computing/27disk.html