DNZPHA502E: ERROR: unable to communicate with the IBM Systems Director server.

Explanation: All the IBM PowerHA SystemMirror terminal commands for IBM Systems Director communicate through the IBM Systems Director server. If the communications with the server are not working, the terminal commands will not work, either.

Operator Response: The communications problem may be temporary, so it is worth simply trying the command again. If that fails, contact your IBM Systems Director server administrator for assistance.

Administrator Response: Verify that the IBM PowerHA SystemMirror plug-ins are running on the server by invoking "lwi/bin/lwiplugin.(sh|bat) -status", and checking for "systemmirror" in the output. At a minimum, the "server" and "common" plug-ins must be in an "ACTIVE" state. If they are not, try starting them with "lwi/bin/lwiplugin.(sh|bat) -start <PLUGIN_ID#>". If that fails, it may be necessary to restart the server using smstop/smstart on UNIX, or net stop/start "IBM Director server" on Windows.