1 Reply Latest reply on Jun 27, 2013 4:19 AM by depping

    CPU affinity and HA

    tvbruwae Lurker

      Hi

       

      Due to software license restrictions, we would need a particular VM to be configured with CPU affinity, so it's only using a dedicated set of physical cores. Now there are a lot of documents and articles about the effects of CPU pinning, but I have not yet found a firm statement on the effects on HA.

       

      VM-VM and VM-Host affinity can be set as a preferred option or a mandatory option, changing the HA behavior accordingly. But will HA, by default, restart a VM on another host if the host to which the CPU allocations were made is offline? In other words, is CPU affinity considered a a preferential setting or a required setting?

       

      Cheers,
      Tim

        • 1. Re: CPU affinity and HA
          depping Champion
          VMware EmployeesUser Moderators

          CPU Affinity and HA works and is supported as far as I am aware, I have never seen anything else stated. However vMotion is not supported so keep that in mind when it is also a DRS cluster as you would have to disable DRS or set it to Manual for this VM.

           

          PS: I tested the restart in my lab...