NetApp
7-mode/HA pair/V-Series : Aggregates : Managing aggregates : Taking a plex offline or online
Taking a plex offline or online
You can use the Aggregate management tab to take a plex offline or bring it online. When a plex is offline, it is not available for read or write access.
Steps 
1.
From the Home tab, double-click the appropriate storage system to display a subtree of management features.
2.
Click Storage > Aggregates.
3.
Select an aggregate and click Plexes in the lower pane.
4.
Click Offline or Online.
5.
Select the check box in the confirmation window and click Offline or Online.
Parent Topic: Storage node