TDK has developed a prototype optical disc that can hold up to 320 Gbytes of information -- that's more than six times the current highest-capacity media available.
The 12-centimeter disc has 10 recording layers, each of which can store 32 Gbytes. In comparison a Blu-ray Disc can hold 25GB on each layer, and a dual-layer disc is the highest capacity generally available at present.





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