Your comment worries me - are there known data integrity concerns with B2?

I'm curious, too. I know they've had some issues in the past:

https://github.com/restic/restic/issues/3268#issuecomment-78...

On the other hand, I tested around 15,000 backups last year (multiple hourly backups, daily tests) and they all passed.

I mean reading that thread, the problem itself is certainly worrying but the response from B2 is pretty golden, that's some great customer/technical support.

Sorry to cause concern.

If you are backing up daily and testing daily egress charges become an issue.

If you are doing it 3x a month then it's a good deal.

B2 is for achiving in my use case.