Multilayer optical storage for big data center: by pre-layered scheme

Abstract

Nowadays, big-data centers still rely on hard drives. However, there is strong evidence that these surface-storage technologies are approaching fundamental limits that may be difficult to overcome, as ever-smaller bits become less thermally stable and harder to access. An intriguing approach for next generation data-storage is to use light to store information throughout the three-dimensional volume of a material. In this paper, a review of the major achievements of multilayer optical storage by pre-layered scheme from 2003 is presented and the key technique details are discussed. The authors conclude that multilayer optical storage techniques by pre-layered scheme could be the strong candidates for big data center in the years to come.