A Comparative Study on Quorum-Based Replica Control Protocols for Grid Environment

Grid Computing handles huge amount of data which is stored in geographically distributed sites. It is a great challenge to ensure that data is managed. distributed and accessed efficiently in the distributed systems such as the data grid. To address the challenge, various techniques have been proposed in the literature. One of the widely used techniques is data replication since it offers high data availability, fault-tolerance and improve the performance of the system. In replication-based systems, replica control protocols are implemented for managing and accessing the data. In this paper, we present a comparison of various quorum-based replica control protocols that have been proposed in the distributed environment. This paper attempts to compare these replica control protocols based on the strengths. weaknesses and performance of the protocols.