| 
| We currently run Netbackup 3.4 and it appears you cannot 
| write to disk - does this mean I will have to upgrade to 4.5?
| 

Well actually you can (at least in 3.4.1 I've seen around, but I think it
should be there in 3.4 also).
You can create a Storage Unit of type "Disk" and subsequently specify the
Media Server and the absolute path to a directory (of the Media server).
Then in the class definition you select as "Class storage unit" the name of
the newly created storage unit.
If you would like to have your disk backups to the other building you'll
need to set up a media server there.

Panos