If you've just upgraded to Backup Exec 11d, you might notice that in the selection lists there are warning triangles on many (or all) of your remote servers.
The warning triangles simply mean that the Backup Exec media server has not received a publishing message from the remote server in the last 24 hours. If you have only just upgraded, then this is to be expected.
You can simply ignore the warning triangles, and after a while (4 hours or so) if all is well the warning triangles will disappear (provided the remote agent is set to publish to the media server). If the warnings persist, then there may be a problem which needs investigating.
The warning icon and its behaviour is documented on page 319 of the Backup Exec 11d Administrator's Guide. Information on publishing is on page 919.