| So you can have valid checksums but still get corrupt data… Yup, therefore: | you will always need to be able to figure out the state/diff from scratch. So

| So you can have valid checksums but still get corrupt data… Yup, therefore: | you will always need to be able to figure out the state/diff from scratch. So if you evaluate a backup system, this needs to be the first thing to check. "what if I backup and accidentally lose my log/summary/sync-state ?"