Optimum Backup Policies with Duplicated Data  
Author Syouji Nakamura


Co-Author(s) Xufeng Zhao; Miwako Arafuka


Abstract In order to ensure data security, plans of data back- ups are usually set up at some planned times. We suppose that backups are implemented at a number N of data updates, at a planned time T, or at the rst update over time T, under respective non-failure and failure states for a database system. Using the theory of renewal processes, we obtain the expected cost rates for backups, and optimum solutions to minimize the expected cost rates are obtained.


Keywords Random backup, full backup, data update, database failure, data recovery
    Article #:  RQD25-185
Proceedings of 25th ISSAT International Conference on Reliability & Quality in Design
August 1-3, 2019 - Las Vegas, NV, U.S.A.