We typically use SyncMirror in our MetrCluster environments. This allows data to be real time synchronized between two different physical locations, yet they are considered the same Cluster, but may have muliple HA pairs.
There is actually another whole section of Data Using SyncMirrror https://library.netapp.com/ecmdocs/ECMP1368826/html/GUID-D4D7C7F0-9063-4099-B5CA-8FEE619EEF1D.html
