The following table summarizes the allowed actions that you can perform on a metro resource depending on the current metro status and the system from which the action is initiated.
NOTE:The table addresses common use cases and does not include rare failure scenarios.
Table 1. Allowed Metro ActionsThis table lists common use cases for using metro actions on the preferred or nonpreferred systems.
Location
Metro Status
Modify Role
Promote
Demote
Pause
Resume
End Metro
On preferred system
Operating Normally
Yes
No
No
Yes
No
Yes
Paused
No
No
Yes
No
Yes
Yes
Fractured
No
No
Yes
Yes
No
Yes
Switching to Metro Synchronization
No
No
No
Yes
No
Yes
On nonpreferred system
Operating Normally
Yes
No
No
Yes
No
Yes
Paused
No
Yes (if the other system is unreachable)
No
No
Yes
Yes
Fractured
No
Yes (if the other system is unreachable)
No
Yes
No
Yes
Switching to Metro Synchronization
No
No
No
Yes
No
Yes
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