I have a two node NW6.5 cluster. In order to back this up, I sync my
data from the various clustered volumes to a remote server, where I then
use Backup Exec 9.2 to write the data to tape.

I am confidant with the data backups I have from my various volumes,
including the two sys volumes. However is there anything cluster
related that I should be backing up? Is there hidden configuration
information that would be missed in my backup procedure?