当前,企业的信息化已经非常普遍,众多的企业都建立了计算机网络系统,支持企业的生产、运营和管理工作。企业最关心的问题之一是如何建立并维持网络的稳定性和运行的持续性,于是,高可用性对于网络显得越来越重要。事实上,如果一些关键应用一旦停止下来,所造成的损失是难以估计的。由于网络瘫痪而影响了企业的信誉,致使客户对企业失去信任,所造成的危害是致命的。 At present, the informationization of enterprises has become very common. Many enterprises have established computer network systems to support the production, operation and management of enterprises. One of the most important concerns of enterprises is how to establish and maintain the stability of the network and the continuity of operation. Therefore, high availability becomes more and more important to the network. In fact, if some of the key applications stop, the resulting loss is hard to estimate. As the network paralyzed and affected the credibility of enterprises, resulting in loss of trust of customers, the harm caused is fatal.