Mobility conductor only goes in pairs (active / standby), it is not possible to create a cluster of 3, as far as I know.
If you need more capacity, you can increase the size of the existing MCRs, or add the third as a separate standalone MCR.
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Herman Robers
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If you have urgent issues, always contact your Aruba partner, distributor, or Aruba TAC Support. Check
https://www.arubanetworks.com/support-services/contact-support/ for how to contact Aruba TAC. Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba Networks.
In case your problem is solved, please invest the time to post a follow-up with the information on how you solved it. Others can benefit from that.
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