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DRS VM-VM anti-affinity rules in vSphere 5.5

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Does anybody know which is the advanced option that enables HA to conform with the VM-VM anti-affinity rule in vSphere 5.5? It is mentioned as an enhancement in this vSphere 5.5 What's New document: http://www.vmware.com/files/pdf/vsphere/VMware-vSphere-Platform-Whats-New.pdf

"To address the need for maintaining placement of virtual machines on separate hosts—without vSphere vMotion migration—after a host failure, vSphere HA in vSphere 5.5 has been enhanced to conform with virtual machine–virtual machine antiaffinity rules. Application availability is maintained by controlling the placement of virtual machines recovered by vSphere HA without migration. This capability is configured as an advanced option in vSphere 5.5"

In the previous version(s), if you wanted to keep 2 VMs separated in case of an HA event, the recommendation was to create ""Must run on hosts in group" VM-Host affinity rules with the 2 VMs in different DRS VM groups.

There was also the DRS advanced option ForceAffinePoweron, but it was not actually enforced in case of an HA event.

Thank you.

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I found the answer on Duncan Epping's blog:

http://www.yellow-bricks.com/2013/09/04/vsphere-5-5-nuggets-high-availability-enhancement/

das.respectVmVmAntiAffinityRules - Values: "false" (default) and "true"

Thanks Duncan!

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I found the answer on Duncan Epping's blog:

http://www.yellow-bricks.com/2013/09/04/vsphere-5-5-nuggets-high-availability-enhancement/

das.respectVmVmAntiAffinityRules - Values: "false" (default) and "true"

Thanks Duncan!

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