With its omnipresent computer all connected via internet information age has lead an explosion of information available to users. With the decreasing cost of storing data and increasing storage capacity with a same small device foot print have been key enablers of this revolution. While the current storage need are being met the storage technologies must continue in order to keep pace with a rapidly increasing demand. However both magnetic and conventional optical data storage technologies, where individual bits are stored as distinct magnetic or optical changes in the surface of recording medium, are approaching physical limits beyond which individual bits are too small or too difficult to store. Storing information through the volume of the medium not on its surface offers an intriguing high capacity alternative. Holographic data storage is a volumetric approach, which has made recent progress towards practicality with the appearance of lower cost enabling technologies.Hence the holographic memory has become a great white whale of technology research.