Striped replication from multiple sites in the grid environment

Abstract

Grid technology, as a highly distributed computing environment, requires an optimized access to the data resources to increase data availability. In this paper, we propose a replication technique which is based on parallel transfers from multiple sites containing replicas of the desired file. From each site, we transport in parallel only a portion of the given data source, obtaining the whole file at the end of the process. We describe the work related to the data replication; then we discuss two algorithms for striped replication optimization that aims at the minimization of the time necessary for data transfer. Finally, we present the results of the striped replication mechanism achieved by the prototype implementation of the striped replication algorithm. We compare them with the results of the standard replication tools and show interesting performance improvement. © Springer-Verlag Berlin Heidelberg 2005.