通信開始時のTCP送受信特性を考慮したデータ分割リストア方式の検討
通信開始時のTCP送受信特性を考慮したデータ分割リストア方式の検討
カテゴリ: 論文誌(論文単位)
グループ名: 【C】電子・情報・システム部門
発行日: 2022/03/01
タイトル(英語): A Study of Restoration Method Considering TCP Characteristics during Slow-Start
著者名: 亀井 仁志((株)日立製作所),中村 隆喜((株)日立製作所),村岡 裕明(東北大学)
著者名(英語): Hitoshi Kamei (Hitachi, Ltd.), Takaki Nakamura (Hitachi, Ltd.), Hiroaki Muraoka (Tohoku University)
キーワード: データリストア,TCP,スロースタート data restore,TCP,slow-start
要約(英語): A data restoration method for the large-scale disasters is proposed. Recently, social data, e.g. resident information or medical information, are stored into information systems. The social data are backed up to remote site to protect from data loss. It is important for restoration to be able to utilize the backup data as soon as possible. Thus, a part of backup data, e.g. files, is individually restored (File-lvl Restore). To reduce the time to get backup data by the File-lvl Restore more further, we apply the parallel data downloading. However, the current method does not consider the TCP slow-start processing; thus, the number of chunks of parallel downloading becomes insufficient. In this paper, we propose a data restoration method that decides the number of chunks based on Round Trip Time and the characteristics of TCP slow-start. Our evaluation results show that the time to get the backup data by using the proposed method becomes 1/2 to 1/3 compared to the current method.
本誌掲載ページ: 430-441 p
原稿種別: 論文/日本語
電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/142/3/142_430/_article/-char/ja/
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