Policy Management software upgrade procedures are distributed and stored for use as ISO files, which are archive files of optical (DVD) discs. ISO files contain both upgrade software and files that direct the upgrade process. When upgrading the Policy Management software, you can automatically distribute the files using the CMP interface or manually distribute the ISO files to the servers and clusters.
When upgrading, use the ISO Maintenance page to show the current Policy Management software release executing on each server, and determine what ISO files are available to use for upgrades. Operations performed from this page include distributing ISO files, deleting ISO files, and pushing an upgrade script to servers. An audit log records each update operation.