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HD DVD-RAM is like an evolution of DVD-RAM, soon to be offered up by the HD DVD Group. Since HD DVD is more like the successful DVD format than Blu-ray, the progression of the DVD-RAM format through HD DVD seemed only natural. While details are scarce at this time, HD DVD-RAM will offer up to 20GB per layer, instead of the 15GB per layer that HD DVD discs currently offer. This is achieved because of the different recording methods applied.