nsousaarlington
Enthusiast
Enthusiast

Changing 1 vCPU VM Back to Uniprocessor HAL

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Is the current recommendation to change a single-core VM back to a uniprocessor HAL for Server 2016 or Server 2019?

Also on page 27 of the vSphere 6.7 Performance Best Practices PDF, it mentions the following:

When changing an existing virtual machine running Windows from multi-core to single-core the HAL usually remains SMP. For best performance, the HAL should be manually changed back to UP.

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continuum
Immortal
Immortal

The info you reference was relevant in times of XP , Winows 2000 and 2003.

I doubt that any recent OS still has single CPU kernels.

Do you need support with a recovery problem ? - send a message via skype "sanbarrow"

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1 Reply
continuum
Immortal
Immortal

The info you reference was relevant in times of XP , Winows 2000 and 2003.

I doubt that any recent OS still has single CPU kernels.

Do you need support with a recovery problem ? - send a message via skype "sanbarrow"

View solution in original post