I think I’ll have to email Backblaze about the Safety Freeze event yesterday. I have successfully reinstalled and the backup is running ok again. But it’s reporting about 500 GB less data in the backup than there should be.

I’ve checked my Carbon Copy Cloner logs for the last few days and I haven’t lost 500 GB locally.

I think I remember last year it did something like this. And then sometime later, the Backup size jumped back to the ~4TB I was expecting.

So I’m putting it down to some kind of error in Backblaze. Which I will try to report.