A hybrid storage system composed of on-the-fly automated storage tiering (OTF-AST) and caching

Kazuichi Oe, Koji Okamura

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

    3 被引用数 (Scopus)

    抄録

    In a previous workload study, we found a new type of I/O concentration approximately 6 GB in size that continues for more than 10 minutes and then moves on to another area. We also found that the conventional hybrid storage method, static tiering and caching, is not sufficient for this I/O concentration. The on-the-fly automated storage tiering (OTF-AST) designed for this I/O concentration cannot handle other I/O concentrations well, so we have developed a hybrid storage system composed of both OTF-AST and caching. In the proposed system, the OTF-AST dynamically migrates the new I/O concentration to SSD and the caching handles the other I/O concentrations. Experimental results showed that the hybrid storage system surpasses the basic OTF-AST system with an average response time 27% better for one of a typical samba workload in which read is not predominant and I/O concentration lasts for 20 minutes.

    本文言語英語
    ホスト出版物のタイトルProceedings - 2014 2nd International Symposium on Computing and Networking, CANDAR 2014
    出版社Institute of Electrical and Electronics Engineers Inc.
    ページ406-411
    ページ数6
    ISBN(電子版)9781479941520
    DOI
    出版ステータス出版済み - 2 27 2015
    イベント2nd International Symposium on Computing and Networking, CANDAR 2014 - Shizuoka, 日本
    継続期間: 12 10 201412 12 2014

    その他

    その他2nd International Symposium on Computing and Networking, CANDAR 2014
    Country日本
    CityShizuoka
    Period12/10/1412/12/14

    All Science Journal Classification (ASJC) codes

    • Computer Networks and Communications

    引用スタイル