Mass memory systems serve computer needs in both archival and backup needs. There exist numerous applications in both the commercial and military sectors that require data storage with huge capacity, high data rates and fast access. Recording devices will continue to improve, but the need for storage will continue to grow past their physical limits . One of the methods to increase storage density, and a logical step from 2D, is to record in three dimensions, so-called volumetric recording, using holography. And although the idea has been around for decades, research into holographic storage has been slowed by the incredibly low cost of commercially available optic and magnetic devices. Only recently has research into holographic storage led to relative success, with a Lucent Technologies startup, InPhase Technologies, just recently revealing a holographic storage prototype. While current DVD technologies offer capacities in the tens of gigabytes per disk, their Tapestry holographic drives will be able to store data in the range of 200 gigabytes to 1.6 terabytes on a single disk.