We are running Exchange 2007, SP1. We had a disk issue on the Passive Node and we would like to run chkdsk on that server. I assume (big mistake, perhaps) that I can reboot that server, run CHKDSK, and when the disk checking completes the replication will catch up. I think this is a safe play but figure I would check here first. I would rather find out now about a potential disk issue as opposed to when an actual failover occurs. Thanks much. Martin