Yep and if you ship WAL transaction logs to standby databases/replicas, corrupt blocks or lost writes in the primary database won't be propagated to the standby

Yep and if you ship WAL transaction logs to standby databases/replicas, corrupt blocks or lost writes in the primary database won't be propagated to the standbys (unlike with OS filesystem or storage-level replication). Edit: Should add "won't be silently propagated"