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Vmware high Availability

1- If I understand HA availability is helpful only when ESX servers are up, and one or some of them have their resources degrading in regards to the criteria set up in the cluster HA configuration.
I mean if one of ESX resources go below the threshold, VMs get migrated to another host.
What if both ESX servers(if we only had 2) go below the threshold ?

2- In the case one ESX server unexpectedly looses power, I believe HA will not come in handy in this case. Correct ?

3-I also would like if automatic Vmotion can only be done within the Cluster?

4-in which case the VMs get restarted in another ESX server?

Thanks

SOLUTION

Aravind Sivaraman

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jskfan

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yes i was confused.

I forgot tha the shared storage is one of the requirement for HA as well as DRS

SOLUTION

Andrew Hancock (VMware vExpert PRO / EE Fellow/British Beekeeper)

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jskfan

ASKER

So if only HA is enabled no DRS, then if one ESX host goes very low in resources, would the VMs be migrated(Vmotionned) automatically to another host, without getting rebooted in the other host.

SOLUTION

Andrew Hancock (VMware vExpert PRO / EE Fellow/British Beekeeper)

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ASKER CERTIFIED SOLUTION

Aravind Sivaraman

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jskfan

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Thank you Guys!