Hi,
It seems that you have two different issues here: -
1. Permissions issue: Check if the domain admin account has administrative privileges on the SharePoint Web Front-End servers. If not then you'll either have to grant that or choose a different domain account that has those permissions. Similarly for SMSQL, ensure that the service logon account has sysadmin privileges on the SQL Server instances.
2. Invalid location for the different SharePoint Server components. This is the reason that you see the "unknown" icons. Follow the instructions in the Installation and Administrative Guide for SMMOSS to determine the appropriate data layout. Then keep the "Verify Storage Layout" box checked before browsing the SharePoint farm in the backup builder.
Regards,
Sourav Chakraborty
Technical Marketing Engineer
SMAI , NetApp
sourav@netapp.com