International Journal of Computer Applications Technology and Research
Now-a-days, grid systems are vital technology for programs running with high performance and problems solving with large scale in scientific, engineering and business. In grid systems, heterogeneous computational resources and data should be shared between independent organizations that are scatter geographically. A data grid is a kind of grid types that make relations computational and storage resources. Data replication is an efficient way in data grid to obtain high performance and high availability by saving numerous replicas in different locations e.g. grid sites.