Hi Andrija,

On 25.06.19 12:56, Andrija Panic wrote:
> They need to be if as similar CPU as possible, in order to allow successful
> live migrations - other than that, you could technically combine Intel and
> AMD if you like. Networking bridges also needs to be setup in identical way
> (irrelevant of the possibility different NICs model and speed) - but that
> is zone wide so I guess not even a question.
> 
> In general you want to keep it , CPU wise, as close as possible

I guess load allocation would suffer if CPUs would differ too much in
available load, right?

> - but you
> can have i.e. different generation CPUs (with obviously different CPU
> flags) and then define CPU model to be the lowest common denominator i.e
> define SandyBridge as the model, even though you have both SandyBridge and
> a newer generation CPUs. You DO need to test your CPU models, ACS and
> libvirt (in specific version if libvirt there was some issue with CPU
> flags).

Good hint!
 
> Hope that helps

Indeed, thank you very much!

Michael

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