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Highly Reliable Redundant Data Allocation Method for High Availability Distributed Clusters

For core systems such as session control servers provided by a telecommunications carrier, we has been studied the distributes cluster architecture that could control system performance flexibly. It is required to maintain data even in disasters. In this paper, we propose methods to control data redundancy that does not cause data loss even in the case of a large-scale disaster. We evaluated our proposed methods by computer simulation.