Since the recent decades, optical information has been the most essential methods for computerized distribution. There has been a capacity limit of such gadgets. In any case, constraints in the optics have obstructed the development of these gadgets. Now-a-days there is more interest for greater and quicker advances-hard circle drives and optical plates. There has been use of pendrives, CD’s and DVD’s and hard disk etc now a days which holds large amount of data. This paper basically focuses on how 3-D optical storage works and which different methods have been used for the retrieval of data and how long does it takes to retrieve the large amount of data and how the data has been stored. 3-D optical data storage is the method that allows more than 100 layers as compared to other optical data storage. It's an approach to give petabyte-level mass stockpiling on DVD-sized discs. © IAEME Publication.