When using many data document, advocate data file is used at storage system object and watch, secondary data file is used at memory user data and index.

采用多个数据文件时，主数据文件用于存储系统对象和表，次要数据文件用于存储用户数据和索引。

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In this mode, the secondary reads data from the staging file and receives new data from the primary directly.

在这种模式中，次要服务器从暂存文件中读取数据，并从主要服务器直接接收新数据。

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For example, as an administrator, you could use the space to create a quick backup, or to compress existing data without having to use a secondary file system for the purpose.

例如，作为管理员，您可以使用这个空间来创建快速备份，或对现有的数据进行压缩而无需为达到该目的使用辅助文件系统。

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