The file specified should contain a list of key-value properties, using the port names defined in the serverindex.xml configuration file that is stored in the node directory in the configuration tree.

Secondly, they produce the list which includes the files and directories will be backuped based on the selection tree before copy and the present catalog tree of file system.

Meanwhile, in the solution, the stateful MAC tree for checking file content integrity, the skip list for checking operation sequence are used.