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It might seem silly to think that 50GB for a single Blu-ray disc isn't enough, but at this point, even high-def movies are doing what they can to fill it up. Hitachi is working to future-proof the high-def format though, with an introduction of their experimental 100GB quad-layer disc. Why anyone should care about this is that due to how it's designed, it would still be compatible with all current Blu-ray drives on the market. To push the envelope even further, the company also states that they are working on a octa-layer version of the disc as well, which would offer an incredible 200GB of space.
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Although no new hardware may be required to read the additional layers of Hitachi’s Blu-ray Disc, it is still unclear what costs, if any, would be added onto the manufacturing side of the equation. Should expensive equipment be required to manufacture the discs, movie studios may opt to release their titles across two Blu-ray Discs rather than cram movie and special feature data onto a single disc.
Source: DailyTech
<table align="center"><tbody><tr><td>
Although no new hardware may be required to read the additional layers of Hitachi’s Blu-ray Disc, it is still unclear what costs, if any, would be added onto the manufacturing side of the equation. Should expensive equipment be required to manufacture the discs, movie studios may opt to release their titles across two Blu-ray Discs rather than cram movie and special feature data onto a single disc.
Source: DailyTech