You can run a job on devices that are on a specific managed media server or on devices that are in a group of managed media servers. This filter lets you control where certain jobs are delegated. For example, to always run backups of Exchange databases only on the devices that are attached to managed media servers in a pool named Exchange Backups, you could select this option, and then select the Exchange Backups media server pool.
To restrict the backup of a selection list to specific devices