A subclient identifies a group of virtual machines to be backed up, and associates the subclient content with a storage policy that identifies where backup data will be stored.
A default subclient is created automatically for each backup set. When first created, the default subclient includes the entry '\' on the Content properties to represent "All unprotected VMs," ensuring that all virtual machines from the configured Red Hat data center will be backed up if they are not covered by another subclient.
You can create additional subclients to back up selected virtual machines based on discovery rules. This approach can be used to provide different policies, options, or backup schedules for different categories of virtual machines, based on the VM name, host, guest operating system, storage location, or tag. You can also create filter rules to exclude virtual machines from backup set or subclient content.
When a virtual machine is included in a user-defined subclient, it is automatically excluded from the default subclient. This prevents the duplicate backup of any virtual machine by the default subclient. (Duplicate backups still occur if a virtual machine is included in multiple user-defined subclients.)
Note: If a subclient is deleted, backed up virtual machine data can still be restored from the backup set that contained the deleted subclient.