I see from posts here that the Exchange DB defrag will not start with the NT Backup running. What I want to know is if it will start while the Backup is in the Verify phase? I want to push back the allowable defrag time so it is not running when people start work around 7:30. Right now the allowable is 5-8 am, and might not finish until 8:45. I'm not sure if it is because it is still waiting for the Backup Verify to finish or not.