IBM V7000 Introduction And Implementation Manual page 460

Switching a consistency group
As with the switch action on the Remote Copy relationship, you can switch the copy direction
of the consistency group as well. To switch the copy direction of the consistency group, click
Switch from the Actions drop-down menu (Figure 9-113).
Figure 9-113 Switch the copy direction of a consistency group
A warning message opens (Figure 9-114). After the switch, the primary cluster in the
consistency group is changed. Write access to current master volumes is lost, while write
access to the current auxiliary volumes is enabled. Make sure that these settings are what
you need, and if so, click OK to continue.
Figure 9-114 Warning message to confirm the switch
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