Using BackUp Exec 2012 to back up ReadyNAS NV+

I have a Symantec BackUp Exec system running on a server right next to my ReadyNAS NV+ server.

I want to back up the ReadyNAS as I do regular backups of my other servers.

But when i try and run a test, an error message occours and the test can not proceed.

 and .

 

I'm an IT-Support student at KVH Industries Denmark undergoing my first lightweight-heavy backup.