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Optimal Backup Interval Of A Database System Using A Continuous Damage Model

In: Recent Advances In Stochastic Operations Research II

Author

Listed:
  • SYOUJI NAKAMURA

    (Department of Human Life and Information, Kinjo Gakuin University, 1723 Omori 2-chome, Moriyama-ku, Nagoya 463-8521, Japan)

  • TOSHIO NAKAGAWA

    (Department of Management and Information Systems, Aichi Institute of Technology, 1247 Yachigusa, Yakusa-cho, Toyota 470-0392, Japan)

  • HITOSHI KONDO

    (Faculty of Economics, Nanzan University, 118 Yamazato-cho, Showa-ku, Nagoya 466-8673, Japan)

Abstract

Suppose that a database is updated and an amount of updated files accumulates additively. Some media failures occur at random. A full backup is made when the total updated files exceed a threshold level. To lessen the overhead of backup processing, the operation of an incremental backup with small overhead is adopted between the full backup. The mean time to incremental or full backup and the expected cost of these schemes are derived, using the theory of cumulative processes. Further, optimal numbers of incremental backup which minimize the expected costs are analytically discussed. A numerical example is finally given.

Suggested Citation

  • Syouji Nakamura & Toshio Nakagawa & Hitoshi Kondo, 2009. "Optimal Backup Interval Of A Database System Using A Continuous Damage Model," World Scientific Book Chapters, in: Tadashi Dohi & Shunji Osaki & Katsushige Sawaki (ed.), Recent Advances In Stochastic Operations Research II, chapter 17, pages 243-251, World Scientific Publishing Co. Pte. Ltd..
    • Handle: RePEc:wsi:wschap:9789812791672_0017
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