A snapshot security protocol for radar network protection

Snapshot based rollback recovery is one of the widely used techniques for applications such as scientific computing, database, telecommunication and critical mission applications. The goal of this paper is to design and implement a snapshot security protocol, which calculates consistent global snapshot for distributed applications running on radar networks in order to add more reliability and high availability to these systems. Our protocol is non-blocking in nature and avoids unnecessary computation. We use the dependability concept to minimize the amount of information (that passes through the network) for asking only minimum number of processes to take snapshot. Moreover, the number of control messages is independent of the increase in the number of processes in the system. The size of control messages is also small.