Now that I have Big Sur and Time Machine basically straightened out (or at least I think I do :-), I'm looking at a cloud backup system for redundancy. The hidden minefield that isn't always clear is the "syncing and saving your files to the cloud" choices. I had a nightmarish time recently...
I was finally able to get Big Sur on the MacMini (2014).
The backup is 713gb.
I had to get a different external drive, after having fought for a week with the Partitioned APFS 2T ED that was so painfully slow.
I gave up on that one and reformatted the ED that had been the TM B/U with Mojave...
