A similar issue I was recently thinking about. In the end it came down to
wanting to be able to run multiple concurrent backup jobs and a single pool
would result in all but 1 job waiting for the storage device to be
available.
see:
http://bacula.org/en/dev-manual/Basic_Volume_Management.html#SEC
pe drive's web interface. (But my only goal was to get a tape out the
mailslot though.) So here it is attached in case it will help anybody
else. Just change a few of the variables like the IP address to match your
setup.
Thanks for all the help you all have provided me without know