CMMVC8344E Cannot change site because controller has one or more managed MDisks and the system topology is stretched or Hyperswap.
Explanation
In stretched or HyperSwap® system mode, it is not possible to change the site while the controller has one or more managed MDisks.
User response
Migrate or delete MDisks on the controller to make all MDisks unmanaged. Or, set the system topology to standard and then change site.
Note: The disaster recovery feature is not available with standard topology.