ABR 10 + tape library tl4000 + centralized vault

so, how do i set this up?
if i just "locally" perfom the backup, i can totally do it.
if i try to create and use the tape as a centralized vault, i cant.. it keeps saying there isnt a tape there.

is there a driver or something i should k now about?

i need to setup a backup policy for 4 servers...
and btw acronis doesnt "manage" the library right? he cant move the tapes around by themself