This is one reason why Oracle is still the gold standard. when entering hot backup mode, which is what you do during a snapshot, it logs the FULL BLOCKS that ar

This is one reason why Oracle is still the gold standard. when entering hot backup mode, which is what you do during a snapshot, it logs the FULL BLOCKS that are changed. Failures and inconsistencies can be replayed from the archive logs. Of course this means you can quickly blow out your log archival , so it's meant to be a transitory mode: