I'm having the same trouble. I have a clustered SQL 2005 installation on (2) WIndows 2003 EE nodes.
These nodes are on a different subnet than the backup server but there are no ACLs or firewalls which would prevent them from communicating.
I can see the nodes in the selection list, but not the SQL virtual server instance. Therefore I cannot select it to backup.
Note: This was working at some point b/c I have a selection list called SQL2005_DBs which DOES have the clustered virtual SQL server instance name in it. However, the backup fails when it tries to access it and the clustered virtual instance name (HUSQLSVR) no longer appears in the Windows Network Domain list.
It has been more than 2 weeks since brendonlee's initial post. Does anyone moderate these boards ?
