I'm setting up a new DR4100 and trying to connect to it from a Win2k8 server running Backup Exec 2010 R3 SP4. All components have latest updates for software, plugins and drivers. I was able to install the OST plugin into BE and I've created an OST container on the DR, but I get the "OST client authentication failed" error when I try to add the openstorage device in BE. I've verified the password for the login account and I have the OST ports in the windows firewall on the BE server.

What should I check next? Thanks.