I'm using Veritas Netbackup 3.4 with 3.4.1 patches in Solaris 8 and DLT 8000
with 9 tape library ( well 8 plus a cleaning tape ) .  As the backups are
running is there an way to monitor how much tape is left?  I'd like to  be
able to get a sense of when I need to swap out tapes before i run out.  I
don't think going to all the tapes in the library, adding up the k written
to tape and doing subtraction is a optimal thing to do.