I recently added a a new Conner/Seagate SCSI tape drive to my NetBSD 
system.  It is a Travan type drive that can store up to 8gb on a single 
tape cartridge.  However when I tried to use "dump" to backup my /usr 
filesystem that currently occupies less than 2gb, I was shocked to see it 
would take approximately 86 tapes!  Thinking this was bogus and it would 
run until it found an EOT I inserted the first cartridge and let it go.  
Sure enough after about 1100 tape blocks it prompted for another tape.  
Obviously I'm missing something here, but I'm at a loss as to what I'm 
doing wrong.  Does anyone have any suggestions, clues, hints, or voodoo 
chant I can try?

Thanks,
-bob