The document discusses holographic versatile discs (HVDs), a new type of optical disc storage technology that can store significantly more data than current formats like Blu-Ray discs. HVDs use holography and collinear recording techniques to achieve storage capacities of 200GB per 120mm disc, equivalent to around 9 Blu-Ray discs. Potential uses of HVDs include high-capacity video game and movie storage, higher definition video, and data backup. However, HVD technology is still in development and not yet ready for the consumer market.