Hi Kamal,
Regarding " I would install EM on as stand alone and can add this EM to a MOM which i will install later."
Yes, you can do that, there would be some requirements eg. both installations would need to be on same SP-level, and there would be some good practices like you would probably clean up the smartstor before you make a standalone EM into a Collector, remove all management modules, etc...
Cheers,
Danny
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