Sorry if my forum searchs have missed this. After looking at the Hardware Compatability matrix, I cant find any LTO 8 tape support as yet. Is this correct as they have been out for a little while.
The tape library I am looking at HPE MSL6480 does suppport LTO 7 and LTO 8's
Do you know if the tape drives are HP?
There could be different make of tape drive in the HP library.
Look for 'Ultrium 8' in the HCL.
From what I can see, NBU supports IBM and Quantum LTO8 tape drives.