Usually, backup and restore media server are the same for a backup image.
In a shared storage environment, NBU decides, which media server is used for restore. NetBackup decides based on availability of source media and load of media servers. But NBU obviously does not check, if the destination (client) is reachable by the media server or not.
There could be the case, that some media servers can connect to destination and some not (because of VLAN configuration etc.)
For this case I would like the backup operator to select, which media server has to be assigned.
While, bprestore is able to assign a specific media server, it maybe easy integrated into BAR GUI.