如果高可用性集群中某一个服务器出故障，那么集群软件就会将工作负载转移到idle备用数据库服务器。

If one of the servers in the high availability cluster fails, then the clustering software transfers the workload to the idle standby database server.

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尽管软件可以使用很多工具和向导来组建服务器集群，但专家数据库管理员(DataBase Administrator,DBA)可以帮助处理各种意外问题。

Although many tools and wizards are available with the software to cluster servers, an expert database administrator (DBA) can help with unexpected problems.

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同步方法要求数据库软件与专门化的HA 软件紧密集成，以产生一个 HA集群。

The synchronous method involves tight integration of the database software with specialized HA software to produce a HA cluster.

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同步方法要求数据库软件与专门化的HA 软件紧密集成，以产生一个 HA集群。

The synchronous method involves tight integration of the database software with specialized HA software to produce a HA cluster.

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