We also have a HP Autoloader 1/8 tape library drive and have the same problem with 11d. Running the latest drivers and all but no joy.
Running Export Media takes about 20 minutes and says its successful, yet no tape pops out of the device.
Ticking Eject media after job completes works for our stand alone unit in another server running 11d, but doesnt work with the autoloader either.
So currently we have to put the autoloader into offline mode and manually export the tape, and manually load the next days tape - Which is far from ideal!
Is there some hidden setting I've missed? Or is it a bug in 11d?
Cheers :)