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Fault Tolerant Computer ArchitectureError Recovery

Fault Tolerant Computer Architecture: Error Recovery [In Chapter 2, we learned how to detect errors. Detecting an error is sufficient for providing safety, but we would also like the system to recover from the error. Recovery hides the effects of the error from the user. After recovery, the system can resume operation and ideally remain live. For many systems, availability is the most important metric, and achieving high availability requires the system to be able to recover from its errors without user intervention. If the error was due to a permanent fault, recovery may not be sufficient for liveness because execution after recovery will keep reencountering the same permanent fault. The solutions to this problem—permanent fault diagnosis and self-repair—are the topics of the next two chapters.] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png

Fault Tolerant Computer ArchitectureError Recovery

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Publisher
Springer International Publishing
Copyright
© Springer Nature Switzerland AG 2009
ISBN
978-3-031-00595-4
Pages
61 –79
DOI
10.1007/978-3-031-01723-0_3
Publisher site
See Chapter on Publisher Site

Abstract

[In Chapter 2, we learned how to detect errors. Detecting an error is sufficient for providing safety, but we would also like the system to recover from the error. Recovery hides the effects of the error from the user. After recovery, the system can resume operation and ideally remain live. For many systems, availability is the most important metric, and achieving high availability requires the system to be able to recover from its errors without user intervention. If the error was due to a permanent fault, recovery may not be sufficient for liveness because execution after recovery will keep reencountering the same permanent fault. The solutions to this problem—permanent fault diagnosis and self-repair—are the topics of the next two chapters.]

Published: Jan 1, 2009

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