Data storage news just keeps moving forward. Sony has announced that it will release a multi-layer optical disk that can store over 500GB data.
They are working on it now and the holographic recording technology will have seven layers, producing standard-sized disks with the ability to store 500GB of data of any kind, from HD Video to computer data. They expect the holographic disk to be available sometime in the next 3 years. They are using their “Micro-Reflector” method in order to write to seven layers per disk. Memory density per layer is 1.2 GB and the maximum error rate is 4.1 × 10-4.