The cool thing about this approach is that it opens the possibility of using scanned beams on a non-moving 3d object to store and retrieve even larger amounts of data. The "data cubes" that have been so prominent in sci-fi for generations are now technically feasable with (nearly) COTS hardware.

This is the really cool potential outcome!

Also, since this is a holographic structure, if a 3d object is used there is the potential to be able to encode different data through at least half of the cube faces.

And then, of course, there's the 3d LightScribe capability: you potentially could "overdub" a holographic image into the disc/cube that would appear as the label. How cool is that?