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Optimal age-dependent checkpoint strategy with retry of rollback recovery

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3 Author(s)
Dohi, T. ; Dept. of Inf. Eng., Hiroshima Univ., Japan ; Okamura, H. ; Kaio, N.

We consider a file system with age-dependent checkpointing, where the rollback recovery operation after a system failure may be imperfect with positive unsuccessful probability. After a few mathematical preliminaries, we formulate the steady-state availability and obtain the age-dependent checkpoint strategy analytically, maximizing the steady-state availability. In a numerical example, we examine the dependence of the unsuccessful probability of rollback recovery on the optimal checkpoint interval, and refer to the effect of imperfect rollback recovery quantitatively.

Published in:

Autonomous Decentralized System, 2002. The 2nd International Workshop on

Date of Conference:

6-7 Nov. 2002