System Information.app → File → Save → <Your Mac>.spx
Window → Console (Shift-Command-C)
System Information.app. You should see at least two entries:
Hardware → Thunderbolt: mTape, Sonnet, MagStor, etc.
Hardware → SAS: Ultrium, IBM, HP, Quantum
SAS, power cycle the Thunderbolt device and the LTO drive. If you're still not seeing anything listed under
SAS, restart your Mac. If that doesn't help, reach out to your vendor. On Big Sur? Keep reading:
System Information.app → Hardware → Thunderbolt.
UltriumLTO drive on the