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.
About this task
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:
Procedure
-
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.)