基于虚拟化的容灾系统任务关键性判定方法
DOI: 10.3969/j.issn.1006-7043.2009.11.010
Keywords: 虚拟化 容灾 任务关键性 任务连续性 virtualization technology disaster tolerance mission-critical mission-persistence
Abstract:
利用虚拟化技术进行容灾备份系统建设是降低建设成本、提高资源利用率的有效方法.然而,在系统满负荷的情况下,现有方法通常采用静态标定任务关键性的方法进行灾难恢复,造成了系统负载不均衡的问题.为此,设计了一个任务关键性的判定方法,提出通过计算任务相对截止期、资金代价和依赖度等特征值的综合来动态均衡任务分配方法,以此提高灾难恢复的效率.实验结果表明,该方法在缩减了近50%的容灾系统硬件成本的基础上,能够保证关键任务连续性并提高了系统的容灾效能.
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