I have to try it but it looks like running Cygwin on windows should provide the free open source way for me to use Tar to back up to LTO5 tape
Well to make things interesting I’m now considering installing Unbuntu so that I can use Tar to back up these drives as it seems that Tar is really the only option that isn’t proprietary and will still be in use and free to use years from now.
Based on my initial research other people have been able to use tar with the same Quantum Ultrium LTO5 tape drive as well as almost the exact model SAS card.
Tar can also span archives across multiple tapes and each tape is still readable independently.. it has everything I need!
This person seems to be doing what I want with the same deck.