Your Future DVDs Will be Made Out of Paper

A normal DVD holds 5 gigabytes of data, but this new paper DVD from Sony is a so-called Blu-Ray disc, using a blue laser beam is 25 gigabytes. One way to translate that 25 GByte size, by the way, is to note that it's two hours of High Definition TV. Hi-def movies need Blu-Ray. The 25 gigs is greatly appreciated with the new larger hard drives. I recently purchased two external hard drives for backing up my personal data files and they were each 200 gigs. We are getting close to the petabyte...

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