Many of you may had experience difficult time to figure out what had been went wrong when you had ESX host which have more than 64GB physical memory. When I 1st reported this to VMware nearly a year ago, I had to wait for 3 days before VMware support team come back to me about the solution below.

You may need to change the setting in 1 of the vmkernel setting from your virtual center to the specify ESX host.

Look for VMkernel.Boot.force36BitMTRRMask, and uncheck the box. Follow by a reboot of the ESX host, your ESX should back to normal. Remember to do this before you start to provision any VM on it.

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