I used the wal feature with a bash script that compressed the wal into .xz files (-9 compression) every 10,000 lines and stored those files in s3fs folder. This as a type of "online" backup solution.
Sure, but you probably want some automated snapshot recovery on a node that has a quite recent replica. Restoring a complete backup might take hours or days, and in a desaster scenario you want to be back online within a few minutes. Probably even without manual intervention.
And at the same time you want so spin up a new replica to replace the lost one.
