You can use the command-line interface (CLI) to reverse the roles of primary and
secondary volumes in a stand-alone Metro Mirror or Global Mirror relationship when that
relationship is in a consistent state. You cannot switch
roles between primary and secondary volumes for active-active relationships.
Relationships that are members of consistency groups must
be switched by using the consistency group CLI commands. To switch
the roles of primary and secondary volumes in Metro Mirror or Global Mirror relationships,
follow these steps:
- To make the master disk in a Metro Mirror or Global Mirror relationship
to be the primary, run the switchrcrelationship -primary
master command.
For example, enter:
switchrcrelationship -primary master rc_rel_id
Where rc_rel_id is the ID of the
relationship to switch.
- To make the auxiliary disk in a Metro Mirror or Global Mirror relationship
to be the primary, run the switchrcrelationship -primary
aux command.
For example, enter:
switchrcrelationship -primary aux rc_rel_id
Where rc_rel_id is the ID of the
relationship to switch.
Remember: - You cannot switch a global relationship if cycling is (automatically)
set.
- To switch the direction of a multi cycling
mode-based relationship, the relationship must stop with access enabled.
Then, start by using -force in the opposite direction.
(Using the force parameter might result in a
loss of access. Use it only under the direction of your support center.)