摘要
在军事、工业控制以及电子商务系统中存在着大量的高可用、强实时应用。在这些应用中，采用双机热备份系统具有较高的性能价格比。如何保证双机系统的强实时性、高可用度和服务“不断流”，是其中的关键技术难题。文中着重论述了主备选择、故障检测、双机同步和双机切换中的关键问题。在理论的指导下，给出了实现策略和实际测试数据，测试数据表明本方案完全满足系统的要求，并且在具体工程实践中得到了应用，取得了明显的效果。
There are many applications,with requirements of high-availability and hard real time,in military, industrial control and electronic commerce.The dual-computer hot-standby system is used in these applications with high performance-cost ratio.How to ensure the hard real time,the high availability and the＂nonstop＇service are key problems in dual-computer system.A full solution,which can meet the requirements of the dual-computer system,is proposed in the paper.The system Master-standby choosing,fault detection,dual-computer synchronization and dual-computer switching are emphasized in the paper.The solution has been applied in an actual project.At last,the test data fetched from that project are displayed in the paper, which also shows that the achievement of the solution in the project is out standing.
出处
《计算机光盘软件与应用》
2011年第2期44-46,共3页
Computer CD Software and Application
关键词
双机
热备份
心跳
同步
Dual-computer
Hot-standby
Heartbeat
S ynchronization
