not sure if anyone's been to this site, but holographic storage is a reality, albeit not necessarily in a form you were imagining. it's an interesting article worth a read. basicly, they can fit over a terabyte on a single dvd using up to a hundred layers. currently, each layer holds 4.7 gigs, so discs of 25-140 gigs are currently possible.
a clip from the article:
Research has shown that media containing up to a hundred layers are currently feasible, thereby increasing the potential capacity of a single card or disk to hundreds of Gigabytes. Use of blue lasers would increase the capacities to over 1 Terabyte.
Increased Disc Capacity
DVD data density (4.7 GB) on each layer of data carriers up to 100 layers. Initially, the FMD disc will hold anywhere from 25- 140 GB of data depending on market need. Eventually a terabyte of data on a single disc will be achievable.
Quick Parallel Access and Retrieval of Information
Reading from several layers at a time and multiple tracks at a time - nearly impossible using the reflective technology of a CD/DVD - is easily achieved in FMD. This will allow for retrieval speeds of up to 1 gigabit/second.
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this is the exact same technology as: dti3d. i have the 15" version. -phae