Tree-based replica location scheme (TRLS) for data grids

Data grids provide researching groups with data management services such as Grid-Ftp, Reliable File Transfer Service (RFP), and Replica Location Service (RLS). Especially, Replica Location Service could improve data availability by storing multiple data to the distributed location. However, there is no economic scheme to decide the location of multiple replicas. In this paper, we propose Tree-based Replica Location Scheme (TRLS) that could support users to decide optimally the location of multiple replicas as well as the number of replicas. By TRLS, we could minimize the replication cost since it supports us to find an optimal location, satisfying both storage cost and communication cost at the same time. In addition to, we could decide the number of replicas to satisfy user´s requirements. By minimizing cost, we make an economic decision, and we expect our proposed scheme could be regarded as a basic economic model.