https://library.netapp.com/ecmdocs/ECMP1210206/html/GUID-A865DB95-9418-4ED2-A993-74F347F674A0.html

1. Validate that you can access the remote storage by entering the following command:

aggr status -r

Note: A (level-0 resync in progress) message indicates that a plex cannot be rejoined.

2. Turn on the power to the node at the disaster site. After the node at the disaster site boots up, it displays the following:

Waiting for giveback...(Press Ctrl-C to abort wait)

3. If the aggregates at the disaster site are online, take them offline by entering the following command for each aggregate that was split:

aggr offline disaster_aggr

disaster_aggr is the name of the aggregate at the disaster site.

Note: An error message appears if the aggregate is already offline.

4. Destroy every target plex that is in a level-0 resync state by entering the following command:

aggr destroy plex_name

5. Re-create the mirrored aggregates by entering the following command for each aggregate that was split:

aggr mirror aggr_name -v disaster_aggr

aggr_name is the aggregate on the surviving site’s node.

disaster_aggr is the aggregate on the disaster site’s node.

The aggr_name aggregate rejoins the disaster_aggr aggregate to reestablish the MetroCluster configuration.

6. Enter the following command at the partner node:

cf giveback

The node at the disaster site reboots.