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Hardware and software fault tolerance - A unified architectural approachThe loss of hardware fault tolerance which often arises when design diversity is used to improve the fault tolerance of computer software is considered analytically, and a unified design approach is proposed to avoid the problem. The fundamental theory of fault-tolerant (FT) architectures is reviewed; the current status of design-diversity software development is surveyed; and the FT-processor/attached-processor (FTP/AP) architecture developed by Lala et al. (1986) is described in detail and illustrated with diagrams. FTP/AP is shown to permit efficient implementation of N-version FT software while still tolerating random hardware failures with very high coverage; the reliability is found to be significantly higher than that of conventional majority-vote N-version software.
Document ID
19890057054
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Lala, Jaynarayan H.
(Draper (Charles Stark) Lab., Inc. Boston, MA, United States)
Alger, Linda S.
(Charles Stark Draper Laboratory, Inc. Cambridge, MA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1988
Subject Category
Computer Systems
Meeting Information
Meeting: FTCS-18; International Symposium on Fault-Tolerant Computing
Location: Tokyo
Country: Japan
Start Date: June 27, 1988
End Date: June 30, 1988
Sponsors: Computer Society, MOESC, IEEE
Accession Number
89A44425
Funding Number(s)
CONTRACT_GRANT: NAS1-18061
Distribution Limits
Public
Copyright
Other

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