NetApp
7-mode/HA pair/V-Series : Active/active configuration : Configuring active/active systems : Initiating a takeover
Initiating a takeover
You can use the Active/Active Takeover wizard to start the takeover of a storage system that you want to disable so that you can perform repairs or software upgrades.
Steps 
1.
From the console tree, double-click the appropriate active/active configuration.
2.
Click Active/Active Configuration.
3.
Click Takeover and select the appropriate storage system from the list to start the Active/Active Takeover wizard.
4.
Type or select information as requested by the wizard.
5.
Verify that the takeover was successfully completed in the Active/Active Configuration window.