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oai:gifu-cwc.repo.nii.ac.jp:00000234 2023-05-15T09:57:09Z 7:20

データ更新回数によるレプリケーションの最適方策 Optimal policy of a replication scheme considering the number of data update 木村, 充位 キムラ, ミツタカ 今泉, 充啓 イマイズミ, ミツヒロ 中川, 覃夫 ナカガワ, トシオ Kimura, Mitsutaka Imaizumi, Mitsuhiro Nakagawa, Toshio Disaster Asynchronous Replication Synchronous Replication Optimal Policy This paper considers the problem of reliability in a server system with replication considering the number of data update. Our previous paper have formulated a model of a server system with replication that the server transmits the database content to a backup site after the number of times data update in a main site. In this paper, we derive the probability of migrating routine work to the backup site and the probability of the system down. Further, we calculate the cost effectiveness and discuss an optimal replication interval to minimize it. Finally, in asynchronous and in synchronous replications, numerical examples are given to compare the performance of them. This paper considers the problem of reliability in a server system with replication considering the number of data update. Our previous paper have formulated a model of a server system with replication that the server transmits the database content to a backup site after the number of times data update in a main site. In this paper, we derive the probability of migrating routine work to the backup site and the probability of the system down. Further, we calculate the cost effectiveness and discuss an optimal replication interval to minimize it. Finally, in asynchronous and in synchronous replications, numerical examples are given to compare the performance of them. 岐阜市立女子短期大学 2009 jpn departmental bulletin paper https://doi.org/10.24516/00000216 https://gifu-cwc.repo.nii.ac.jp/records/234 10.24516/00000216 110007589407 AN10208264 09163174 岐阜市立女子短期大学研究紀要 Bulletin of Gifu City Women's College 59 23 30 https://gifu-cwc.repo.nii.ac.jp/record/234/files/Data_Kimura.pdf application/pdf 394.4 kB 2020-06-30