I have an E4500 connected to a Sun StorEdge L280 (1 drive, 8 slots). I have
a volume pool that I created w/ 7 volumes (A00000 - A00007).

Is there something I have to do to get NBU to automatically advance to
A00001 when A00000 is full ?

The robotics function is working. I created a temp volume pool with A00004
and backed up to it manually. It switched tapes just fine.