SVM disaster recovery in a MetroCluster configuration
Starting with ONTAP 9.5, active storage virtual machines (SVMs) in a MetroCluster configuration can be used as sources with the SnapMirror SVM disaster recovery feature. The destination SVM must be on the third cluster outside of the MetroCluster configuration.
You should be aware of the following requirements and limitations of using SVMs with SnapMirror disaster recovery:
Only an active SVM within a MetroCluster configuration can be the source of an SVM disaster recovery relationship.
A source can be a sync-source SVM before switchover or a sync-destination SVM after switchover.
When a MetroCluster configuration is in a steady state, the MetroCluster sync-destination
SVM cannot be the source of an SVM disaster recovery relationship, since the volumes are not online.The following image shows the SVM disaster recovery behavior in a steady state:
When the sync-source SVM is the source of an SVM DR relationship, the source SVM DR relationship information is replicated to the MetroCluster partner.
This enables the SVM DR updates to continue after a switchover as shown in the following image:
During the switchover and switchback processes, replication to the SVM DR destination might fail.
However, after the switchover or switchback process completes, the next SVM DR scheduled updates will succeed.
See the section Replicating the SVM configuration
in the Data Protection Power Guide for details on configuring an SVM DR relationship.