Single-tape unit, multiple tapes per backup? (newbie)

[Dan Smith]

I am pretty new to Amanda, so this question might be stupid.

I have a single-tape SCSI unit (DDS-2).  I want to be able to backup
more than ~5GB per run.  Is there not a way to get Amanda to somehow
stop at the end of a tape, email a request for another tape, and then
continue when the tape has been changed?

This seems like a basic thing, but again, I may be totally missing
something.

Thanks!

--Dan