Automatic Failover + Windows Failover Clustering

[To-M]

Yes but the ESX HA regardless will work if the the HA in ESX will be using the same VIP for its setup with or without MPIO.

[enealDC]

I have a customer running in this configuration and we perform fail over tests every 1/2 and have no real issues. (knock on wood).
There are a couple of threads on this forum that I have contributed to that you should look at. I've found some resources online that seemed to fix the problem for my environment and they may help yours too..