When to Use

Use the BACKUP function to generate a backup of the Directory (CXX):

To use for rebuilding the Directory in case of hardware errors or accidental destruction.
Before running the CXXMAINT CONVERT option for upgrading the CXX to the present version of CA Datacom/DB, read CXXMAINT CONVERT1112 (Upgrade CXX to Current Version).
As the first step in moving the Directory to either a larger extent or different disk device type.