Hitachi has developed a glass-based data storage medium that is highly heat and water resistant, capable of holding data for hundreds of millions of years, and says it may be able to bring it to market by 2015.
The company's main research lab has developed a way to etch digital patterns into robust quartz glass with a laser at a data density that is better than compact discs, then read it using an optical microscope. The data is etched at four different layers in the glass using different focal points of the laser.Hitachi said the new technology will be suitable for storing "historically important items such as cultural artifacts and public documents, as well as data that individuals want to leave for posterity."
More at Hitachi targets 2015 for glass-based data storage that lasts 100 million years
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