Reliability Characteristics of a Server System with Asynchronous and Synchronous Replications

被引：0
|
作者：
Kimura, Mitsutaka [1 ]
Imaizumi, Mitsuhiro [2 ]
Nakagawa, Toshio [3 ]
机构：
[1] Gifu City Womens Coll, Dept Int Culture Studies, Gifu, Japan
[2] Aichi Gakusen Univ, Coll Business Adm, Aichi, Japan
[3] Aichi Inst Technol, Dept Business Adm, Aichi, Japan
来源：
QUALITY TECHNOLOGY AND QUANTITATIVE MANAGEMENT | 2011年 / 8卷 / 01期
关键词：
Asynchronous; cost effectiveness; disaster recovery; replication; synchronous;
D O I：
10.1080/16843703.2011.11673245
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Recently, replication mechanisms for a disaster recovery have been widely used for the server system. This paper considers the reliability in server systems with synchronous and asynchronous replications for the disaster recovery. We formulate two stochastic models of server systems with synchronous and with asynchronous replications: In synchronous replication, the server transmits the database content to a backup site as soon as a main site updates the storage database. In asynchronous replication, the server transmits the database content to a backup site after a constant time. We derive the expected number of the replication and the probability of migrating routine work to the backup site and the probability of the system down. Further, in asynchronous model, we calculate the cost effectiveness and discuss an optimal policy to minimize it Finally, in asynchronous and in synchronous models, numerical examples are given to compare the performance of them.
引用
收藏
页码：45 / 55
页数：11
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