岐阜市立女子短期大学研究紀要第57輯（平成20年3月）
抄録
Modelling of a Synchronous Replication System for Disaster Recovery
| 木村充位 | 今泉充啓 † | 安井一民 ‡ |
| Mitsutaka Kimura | Mitsuhiro Imaizumi | Kazumi Yasui |
| 愛知学泉大学 † | 愛知工業大学 ‡ |
Abstract
As the Information technology has remarkably developed, business data has computerized. It is fatal for business to lose the data by a disaster. In order to avoid data loss and stagnation of business activity by a disaster, remote replication by using network link has been adopted. Remote replication enables data protection and faster business restart in the event of a disaster. This paper considers the problem of reliability in a server system with a synchronous replication for disaster recovery. We formulate a stochastic model of a server system which consists of a monitor server, a main site and a backup site. A client data in main site is replicated between main site and backup site. We derive the probabilities of switching backup site and system failure, the expected number of data replication.
Key words : Server System, Synchronous Replication, Main Site, Backup Site, Disaster