Dayam: New DVD-sized disc to hold 1 to 5 Terabytes of data

The optical disc revolution started with CDs and then moved on to DVDs, and we're in the midst of the next-gen battle between HD DVD and Blu-ray. Since the birth of the CD 25 years ago, we've gone from 600 MB to whopping 50 GB of storage capacity on these little, convenient and versatile discs.

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