About alternative media server names
A media server can have more than one name. For example, a server can have a fully qualified name, a short name, and more than one network interface card, each of which has its own name. If a media server has more than one storage unit, each storage unit can use a different name for that media server.
If a media server has more than one name, images backed up by it can be identified by an alternate name. If you specify only one of the names of that media server, images that are identified by the other names are not vaulted.
The Choose backups configuration is simplified if you specify media servers (that is, specify something other than the default: all media servers). If you add alternate media server names, you only have to specify one of those names in the field of the Profile dialog box Choose Backups tab. If you do not add alternate media server names, you must specify all the names that are associated with each media server on the Choose Backups tab.