Aren't LTO formats only backward compatible with the immediate prior version?

They can write to one version back and read two version back. for really long term data storage you have to also store the read/write hardware.

	▲	Dylan16807 5 days ago \| parent [-]
		By the time it's hard to get a compatible LTO drive, I'd be very suspicious of a mothballed drive working either. If you want reliable long term storage you're going to have to update it every couple decades.