DefinePK

Abstract

Grid computing is one of the fastest emerging technologies within the high performance computing environment. Grid deployments that require access to and processing of data are called data grids. They are optimized for data oriented operation. In a data grid environment, data replication is an effective way to improve data accessibility. However due to limit storage a replica replacement strategy is needed to make the dynamic replica management strategy efficient. In this paper a dynamic replacement strategy is proposed for a region based network where a weight of each replica is calculated to make the decision for replacement. It is implemented by using a data grid simulator, Optorsim developed by European data grid projects.