Hmm... I had not thought of backing up the actual physical drive since I have them hidden with no drive letters. And yes... I have 4x drive duplication enabled and the drives should be an exact copy of each other. So if I understand correctly, I can just pick any of the 4 drives and back that up to Backblaze B2, correct? So I would not even need to use cloud drive. I think that would be the perfect solution. Thanks for your help!