Enabling intelligent catalog archiving
Intelligent catalog archiving (ICA) is used to reduce the number of catalog files based on a specified retention period or file size. When you enable ICA, any catalog file that is older than the specified retention period value is removed from the catalog disk. The retention value is set to 2592000 (that is., 30 days). The advantage of ICA is that it shortens catalog backup time, by reducing the number of catalog files to be backed up.
To change the retention period, refer to the 'Enabling intelligent catalog archiving' section of the NetBackup Administrator's Guide, Volume I.