The following table lists the files that can be duplexed.

Table 3-27 Files that can be duplexed

System	Definition file
Source system	Extraction master status file
	Extraction server status file
	Extraction information queue file
	Data linkage file
Target system	Import master status file
	Import status file
	Import information queue file

Notes:

• The physical files must be allocated to the same file type (character special files or regular files).
• All physical files must have the same sector length.
• For a data linkage file, specify a physical file name identical to the logical file name as either the primary or secondary file name.
• File duplexing is not applicable to files that use the Datareplicator file system area. Make sure that a duplexed logical file is not allocated in the file system area.