两个或三个服务器采用相同的目录架构和邮件文件集，并开启所有服务器的集群复制功能（见图 1）。
Two or three servers house an identical directory structure and set of mail files, and cluster replication is enabled across these servers (see figure 1).
软件架构师和业务分析人员一致同意把所需的功能集作为服务执行的操作和任意所需的约束或策略来提供。
The Software Architect and Business Analyst agree on the set of required functions to be provided as operations by the services and any constraints or policies required.
您在资料录集更新时的角色和架构所提供的功能。
Your role in recordset updating and what the framework does for you.
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