Patent ID: 8023384
Filing Date: 2011-09-20
Classification: G11B

Abstract:
1. A computer program product for preserving data in a storage subsystem for accessing a dual-path optical recording medium, the computer program product comprising a non transitory computer-readable storage medium having computer-readable program code stored therein, the computer-readable program code comprising: first executable program code for controlling a first laser light to access a holographic recording layer within the dual-path optical recording medium, wherein the holographic recording layer is a write-once data storage layer having a relatively high storage capacity; second executable program code for controlling a second laser to access an intermediate recording layer within the dual-path optical recording medium, wherein the intermediate recording layer is a rewritable data storage layer having a relatively low storage capacity, wherein the intermediate recording layer is separated from the holographic recording layer by a dichronic mirror layer; and third executable program code for selectively transferring data stored in the intermediate recording layer and the holographic recording layer.