Monday, 1 February 2010

Can't boot system as genuine NUMA.

Installed ESX 4.0.0 as a virtual machine running under VMware Workstaion. After installation had completed and the ESX VM had restarted the following error was shown on the ESX console:
TSC: 54361147 cpu0:0)NUMA: 706: Can't boot system as genuine NUMA. Booting with 1 fake node(s).

Although this didn't seem to cause any issues with the VM, I don't like red error messages. Found the following solution to clear the error.

> Open vSphere Client.
> Select the ESX Server and choose the Configuration tab.
> Under Software, click Advance Settings
> Select VMkernel
> Scroll down and clear the selected option VMkernel.Boot.useNUMAInfo

The ESX server requires a restart for the change to come into play.