We've been having an issue where our Exchange 2010 mailstores dismount for an unknown reason. We can't tie it to any event, there is more than 75% free space on all volumes, all services remain running, and nothing meaningful in the event logs. It was a further shock to discover that there doesn't appear to be any monitors in SAM that will pick up on dismounted stores - they all (AppInsight included) will look at the service, but not at the actual mailstores. Am I missing something somewhere, or is there a third-party template that I can use (I couldn't find one)?
