Is this still the recommneded way? I notice with the advanced licenese you get 3 intances. Production server, HA server and a test / developement server. But with the linked solution you only need one and allow VMware to handle the HA. Is Extreme developing and HA for XMC with 2 servers?
For 8.3 and 8.4 this is recommended: https://emc.extremenetworks.com/content/common/ns_failover/common_ha.htm
Correct with NMS-ADV license you can run the XMC three times. I saw some customers do synchronization of configs from the primary to the backup instance. Recommended is to use Hypervisor.
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