Force Mirror Online should be used only in the event that both servers have become inoperable and the primary server cannot bring the resource in service after rebooting. Selecting Force Mirror Online removes the data_corrupt flag and brings the DataKeeper resource in service. For more information, see Primary server cannot bring the resource ISP in the Troubleshooting section.
Note: Mirror_settings should be run on the target system(s) (or on all systems, if you want the settings to take effect regardless of which system becomes the mirror source). The mirror must be paused and restarted before any settings changes will take effect.