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Lookup NU author(s): Emeritus Professor Santosh Shrivastava
Replicated processing with voting represents an attractive strategy for achieving reliability in real time systems. This technique permits N-Modular Redundant (NMR) nodes to be robust with respect to component failures. Three types of failures are identified in a replicated distributed system and the paper discusses how these failures can be detected as exceptions by majority voters. These exceptions include sequence exceptions caused by out of order message processing and hardware exceptions caused by processor and node failures. In particular, standard and exceptional domains for majority voters are defined and implementation strategies for the detection and handling of the discussed exceptions are presented.
Author(s): Mancini LV, Shrivastava SK
Publication type: Report
Publication status: Published
Series Title: Computing Laboratory Technical Report Series
Year: 1987
Pages: 19
Print publication date: 01/06/1987
Source Publication Date: June 1987
Report Number: 238
Institution: Computing Laboratory, University of Newcastle upon Tyne
Place Published: Newcastle upon Tyne
URL: http://www.cs.ncl.ac.uk/publications/trs/papers/238.pdf
