After you perform a planned or unplanned failover, you can undo the failover operation.
In an undo failover operation, the following events occur:
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The destination VMs are powered off.
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The datastores are deleted.
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Mirror relationships are reestablished.
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The source VMs are powered on.
 
Caution
When you undo a failover, any work you did on the VMs is lost and the source VMs return to the state they were in before the failover.
Procedure
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Log on to the Command Center.
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From the navigation pane, go to Auto recovery > Replication groups.
The Replication groups page appears.
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On the Failover groups tab, in the Name column, right-click a failover group, and then select Undo failover.
The Undo failover page appears.
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Click Yes.