I want add one additional comment:

I am/was a great fan and advocate of Mike Bombich's use of ASR in beta versions of CCC in Catalina. It was elegant, very fast, and in my experience highly reliable. I am eagerly anticipating its return in future versions of CCC when Apple finally gets it to work with both Intel and M1 Macs. Until then I will use a separate installation of macOS 11.x on an external SSD as my experimental drive and keep the internal drive installation for production purposes. (Until then, I will be a happy camper if I can just get SoftRAID to play nice. )


If we knew what it was we were doing, it wouldn't be called research, would it?

— Albert Einstein