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Required mirrored non-root aggregates were not found in cluster CLUSTER1

Last Updated:


Applies to

  • MetroCluster 2 node to 4 node expansion
  • MetroCluster 4 node to 8 node expansion
  • ONTAP 9


  • When expanding a fabric MetroCluster from 2 Nodes to 4 nodes or 4 nodes to 8 nodes ,you run the configure refresh command ::> metrocluster configure -refresh true as documented in the expansion guide.
  • Job fails with error.

CLUSTER1::*> metrocluster operation show
       Operation: configure
           State: failed
      Start Time: 6/12/2021 21:40:55
        End Time: 6/12/2021 21:40:56
          Errors: Required mirrored non-root aggregates were not found in cluster "CLUSTER1". MetroCluster configuration requires at least 2 mirrored non-root aggregates that are home, with at least 20GB of free space, in "online" state before running the configure command.

  • When you try to create the mirrored aggregate it fails with error.

CLUSTER1::*> aggre create -aggregate aggr1 -disklist 3.30.6,3.30.7,3.30.8 -mirror-disklist 4.20.6,4.20.7,4.20.8 -node NODE1
  (storage aggregate create)

Error: command failed: Cannot create the aggregate because node "NODE1" is
       not fully configured for MetroCluster operations. MetroCluster
       configuration operations might be in progress. Wait a few minutes, then
       try the command again.


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