[StavrosK]

> Are you using rsync.net's "hidden" attic/borg option? This makes the price very attractive.

I am, yes, and it is quite attractive.

> You mention using "attic check" to guard against bitrot on the provider's storage. How is this in terms of bandwidth used? Does it have to transfer every byte or does it compute a checksum on the encrypted data (since rsync.net doesn't have the raw data) and just send that?

It's very bandwidth-efficient, but I have stopped doing that every day, as rsync.net told me they use ZFS and scrub their arrays regularly, so they would discover bit rot early. I only run the check once a month now.