Robust Overlay Network with Self-Adaptive Topology: The Reliable File Storage Layer

A reliable storage system is a system that ensures the protection of data from loss. Such systems are needed in many critical fields. We cannot imagine that a financial institution looses data about one its clients. Moreover the exponential growing volumes of the data and its availability are crucial issues. A centralized storage system would be overloaded and be a single point of failure. That is why overlay network may provide the solution as they can be used to implement a distributed storage system over an information system. ROSA is an overlay network that was designed to combine a high scalability while maintaining a strong connectivity. The reliability of its topology, designs ROSA as a good platform for deploying such a reliable storage system. Nevertheless ROSA is an unstructured overlay network, this will decrease the efficiency of the storage system. In this article we first propose a structure, called chain of lumps, built upon ROSA. This structure will provide the advantage of a structured network to ROSA. Once ROSA endowed with the structure, we propose a reliable storage system deployed over ROSA. Consequently this system will benefit of the reliability of ROSA.