An analysis of relationship between storage usage distribution and per-user quota value

Yoshiaki Kasahara, Eisuke Ito, Takuya Kawatani, Koichi Shimozono

    研究成果: Chapter in Book/Report/Conference proceedingConference contribution

    1 被引用数 (Scopus)

    抄録

    To prevent resource (especially storage) shortage, information systems such as storage services and email services usually impose an upper bound of resource consumption (quota) per user. In a conservative way, an administrator tends to set a quota value such as the storage capacity divided by the expected maximum number of users for safety and fairness, but it tends to leave large unused storage space, because the users' storage usage pattern shows a long-tailed distribution. In this paper, we analyzed storage usage distribution of some email services to approximate the distribution using a power-law distribution, and proposed a method to calculate an optimal quota value from a target size of storage consumption to increase storage utilization. We applied an optimal quota value we calculated to a real email service and analyzed the effect of quota change. Then, we analyzed actual distributions further to find a better model to approximate the distribution, and found that a lognormal distribution explained the distribution better than powerlaw. We also analyzed two other universities' email service to find similar distribution in these systems.

    本文言語英語
    ホスト出版物のタイトルSIGUCCS 2016 - Proceedings of the 2016 ACM SIGUCCS Annual Conference
    出版社Association for Computing Machinery
    ページ153-158
    ページ数6
    ISBN(電子版)9781450340953
    DOI
    出版ステータス出版済み - 11 1 2016
    イベント44th Annual ACM Special Interest Group on University and College Computing Services Conference, SIGUCCS 2016 - Denver, 米国
    継続期間: 11 6 201611 9 2016

    出版物シリーズ

    名前Proceedings ACM SIGUCCS User Services Conference
    06-09-November-2016

    その他

    その他44th Annual ACM Special Interest Group on University and College Computing Services Conference, SIGUCCS 2016
    国/地域米国
    CityDenver
    Period11/6/1611/9/16

    All Science Journal Classification (ASJC) codes

    • コンピュータ サイエンスの応用
    • ソフトウェア
    • 情報システム
    • 教育

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