由于我们使用的是双服务器，因此在另一服务器上保留一个备份数据库。

What use as a result of us is double server, because this withholds database of a backup on another server.

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对于前面提到的双服务器配置，则有两个单线程CSLD任务，每个任务为它们相关的CSLD任务数据库服务。

For the mentioned two-server configuration, this translates into two single-threaded CSLD tasks, each servicing their related CSLD job database.

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该文主要描述了在双服务器、双前置机的可靠冗余配置基础上，进行服务器和前置机的多重可靠冗余的设计与实现方案。

Based on dual servers, dual communication controllers redundant configuration, the paper mainly deals with the design and implementation of multi-layered reliable redundance.

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