Hmm… It seems I have more data than I thought after moving my external Photos library to my new internal 2 TB drive. I thought it would be under 1 TB, but it says I only have 880 GB of free space left after the move, so I must have a bit over 1 TB.
Unfortunately both my Time Machine drive and CCC drive are both 1 TB drives. So I can’t make a backup to either now.
Looking at Amazon, can get delivery tomorrow on 2 TB or 4 TB WD portable hard drives. I guess 2 TB is enough for CCC because it’s just making a clone. But wondering if I should spring for 4 TB for Time Machine for older versions.
A semi-expected-but-not-so-soon extra expense.