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Mediator-assisted automatic unplanned switchover in MetroCluster IP configurations

In MetroCluster IP configurations, the system can use the ONTAP Mediator to detect failures and perform a Mediator-assisted automatic unplanned switchover (MAUSO).

Note
MAUSO is not supported in MetroCluster FC configurations.

The ONTAP Mediator provides mailbox LUNs for the MetroCluster IP nodes. These LUNs are colocated with the ONTAP Mediator, which runs on a Linux host physically separate from the MetroCluster sites.

The MetroCluster nodes use the mailbox information to determine if a MAUSO is required. MAUSO will not be initiated if the nonvolatile memory (NVRAM or NVMEM, depending on the platform model) in the storage controllers is not mirrored to the remote disaster recovery (DR) partner on the partner site