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Difference between Affinity and Anti-Affinity Rules?

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Hi All,

 

I have three question please help me in these

 

Question 1- What is the difference between Affinity and Anti-Affinity rules and from where we create them?

 

Question 2- The below document from VMware states that High Availability does not consult DRS rules for affinity or anti-affinity when a virtual machine is powering on. If anti-affinity rules cant achieve that than what is the purpose of document.& why can only we create rules with 4 servers because as per this document "This requires at least four hosts to support a Microsoft Cluster of two virtual machines"

 

                    VMware KB: Affinity or anti-affinity DRS rules are not applied during a virtual machine power-on               

 

Question 3- I have two ESXi hosts with Windows clustered VM's VM-A running on ESXi host 1 and VM-B is running on ESXi host 2 how can i make sure that VMHA should not reboot these VM's  on other host in case of one Server failure.


Regards,

Khurram Shahzad


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