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。
Control the database of dimensions to 1gb, file of a data is enough, if have secondary data file, advocate the index that there is file of administrative secondary data in data file.
对于1gb左右规模的数据库，一个数据文件就够了，如果有次要数据文件，主数据文件中有管理次要数据文件的指针。
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。
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。
The data file created in the primary or secondary servers are not replicated to the other servers. It is the user's responsibility to copy these files to the other servers as required.
在主服务器和次服务器中创建的数据文件不会被复制到其他服务器，根据需要将这些文件复制到其他服务器是用户的责任。
The secondary keeps data for each log file in a separate staging file.
次要服务器将每个日志文件中的数据保存在单独的暂存文件中。
The secondary keeps data for each log file in a separate staging file.
次要服务器将每个日志文件中的数据保存在单独的暂存文件中。
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