Pioneer's 400 GB Blu-ray Disc

Pioneer has announced a 16-layer read-only optical disc with a capacity of 400 gigabytes which it will unveil at the International Symposium on Optical Memory and Optical Data Storage 2008 (ISOM/ODS2008) on July 13. The disk’s per-layer capacity is 25 gigabytes, which is the same as that of a Blu-ray Disc and this multilayer technology will also be applicable to multilayer recordable discs.

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