the hosts don't appear in the EMC Control Center (ECC) master server, or one does but then is replace by another. Sometimes the agent starts, but then unexpectedly quits/dies. If you clone your boxes, exclude /var/ECC or else!
Otherwise just: stop the agent; nuke /var/ECC ; restart agent is the fix for this issue it seems
open a http://powerlink.emc.com account and see the article: "Hostname change not reflected in ControlCenter console." EMC doc ID: emc139067
Looks like you also need to remove a couple more files in /usr/ecc/exec any files with the extensions .lck, .port, .uid and .comfile