We just had the same problem today.
It turned out that the 'define drives' somehow inherited
device type GENERICTAPE while the storagepool had a deviceclass
that we defined with device type DLT (As we have a few DLT drives).
After creating a device class with device type 'GENERICTAPE' and
setting
I've been playing with my single external LTO drive and having problems with
the good ole "insufficient mount points available" error. I know getting TSM
to work with a manual drive is quirky and am probably missing something but
I'm able to label a cartridge fine using label libv so I assume the d