The Set Site Defaults specifies the global default values for backup sets. Setting the appropriate defaults for your site will make backup set configuration much easier. Changes set here take effect when the next backup run is executed.
If you have multiple MySQL servers backed up by ZRM, you should store all parameters common to all MySQL servers as site defaults. These values are inherited by all backup sets. You can configure MySQL server specific information such as IP address of MySQL server in the backup set configuration.
Backup Summary provides information about the configuration parameter value and where it was set - Factory Settings (ZRM default value), Site Defaults (Set in Set Site Defaults page) and Backup Set (Set in Backup What/Where/When/How pages).
The values can be modified by Administrator user.