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<p>A VOLTAN node is composed of a number of conventional processors on which application-level processes are replicated to achieve fault-tolerance. The architecture of a family of such nodes with differing functionalities is presented. These include failure-masking, fail-signal, and fail-silent nodes. The software architectures of a three-processor failure-masking and a two-processor fail-silent node are discussed in detail. The suitability of VOLTAN nodes as building blocks of reliable distributed systems is also discussed.</p>
reliable node architectures; VOLTAN node; application-level processes; fault-tolerance; failure-masking; fail-signal; fail-silent; software architectures; reliable distributed systems; distributed processing; fault tolerant computing.

P. Ezhilchelvan, N. Speirs, S. Tao, S. Shrivastava and A. Tully, "Principal Features of the VOLTAN Family of Reliable Node Architectures for Distributed Systems," in IEEE Transactions on Computers, vol. 41, no. , pp. 542-549, 1992.
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