Can't ago driectly from v8.x to v11, but there is a way
Setup a workstation, shut down all backup exec services on the old server and copy the entire ..\BackupExec\NT\ tree to the workstation
Also copyi any B2D folders
then upgrade that to v11d (again, you can use Demo Mode
There is a BEUTIL function that is supposed to copy configuration from one v11 server to another, but there have been several posts to the effect that it doens't work. You may want to try it. Remeber if you do try this, that you must manually copy your \Catalogs folder and any B2D folders to the new server