Optimal Checkpoint Policies Attending with Unsuccessful Rollback Recovery
Satoshi Fukumoto, Sayori Nakagawa, Naoto Kaio, Shunji Osaki · International Journal of Reliability Quality and Safety Engineering · 1997
Checkpoint policies have been studied by several researchers. In this paper, we propose a new model for evaluating the database recovery actions and for determining an optimum checkpoint interval. Taking account of unsuccessful rollback recovery after system failure, we derive the stationary availability as a function of the checkpoint interval under the assumption that the failures occur at a Poisson process. We further discuss the optimum checkpoint interval which maximizes the availability above. The influence of unsuccessful rollback recovery on the system is illustrated by numerical examples.