Method used to determine primary/secondary controllers

1. Method used to determine primary/secondary controllers:
In the storage background:
Determine primary/secondary controllers: Log in to the storage's MML mode and enter sys status. master indicates a primary controller. slave indicates a secondary controller.
Determine primary/secondary controllers: Log in to the storage's CLI mode and enter showmaster. primary indicates a primary controller and secondary indicates a secondary controller.
2. Primary/Secondary switchover
Note: Primary/Secondary switchover must be performed during off-peak hours.
a. On the OSM GUI, choose System > System Information > Primary/Secondary Switchover.
b. Log in to the storage's CLI mode, enter swapsys, and enter y when y or n is prompted.

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