How you ask, apparently using holographic 3D images, holographic storage can pack data more densely then conventional optical storage. Personally i think this breakthrough is a little late, I mean I have a 320GB portable hard disk, and I have an 8GB Usb stick, soon to be 16gb, and I also stream most of my media to my LCD panel direct from my PC via HDMI. So Yes there is a possibility that the media is presented as an archival tool, and at 500GB+, that an impressive archive! One wonders how long it would take to burn 500GB+… who remember the good old days where it took 1 hour to burn a 700mb CD?
Direct from GE’s website it says that a standard DVD can fit 200 times the data(940GB roughly) and data retrieval would increase exponentially due to parallel reading schemes.