When a takeover is initiated by using the geopg takeover command, the data replication subsystem runs several validations on both clusters. These step are conducted on the original primary cluster only if the primary cluster can be reached. If validation on the original primary cluster fails, the takeover still occurs.
First, the replication subsystem checks that the SRDF device group is in a valid aggregate RDF pair state. The SRDF commands that are used for the takeover are described in the following table.
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