Scientific Research Publishing
In this paper, the authors present a predictive prefetching mechanism that is based on probability graph approach to perform prefetching between different levels in a parallel hybrid storage system. The fundamental concept of their approach is to invoke parallel hybrid storage system's parallelism and pre-fetch data among multiple storage levels (e.g. solid state disk and hard disk drives) in parallel with the application's on-demand I/O reading requests. In this paper, the authors show that a predictive prefetching across multiple storage levels is an efficient technique for placing near future needed data blocks in the uppermost levels near the application.