When our Exchange 2007 server was set up four years ago, the IT provider (who we no longer use) set up Continuous Local Replication. The backup data store resides on the same raid array as the primary data store, so a hardware failure would likely affect both the primary and backup store. We perform nightly backups.
I have read that the backup data store allows for quick recovery. Since it is in the same storage array as the primary data store, it would not be useful in the event of a catastrophic disk failure. I presume that any damage in the primary store would be replicated to the backup store, although I can find no documentation that helps me answer this either way. The logical partition has plenty of space, so that is not an issue.
My question is: Is there any point in continuing the local replication on the same raid array? Or am I creating a backup that will never be usable?