Ah... Never thought I can switch it to 'Auto'. Actually it makes sense -  we 
can't be sure if all nodes in cluster are the same -  like my case.

Now all  VMs are in Auto mode.

Thanks for the clarification,  Sharon.

Best Regards,
Strahil NikolovOn Oct 27, 2019 17:30, Sharon Gratch <[email protected]> wrote:
>
> Hi,
>
> The "manual migration" option is only a default value. You can change the 
> migration mode to "automatic" mode if you prefer.
>
> Details:
> When you enable Host CPU Pass-Through for a VM then the migration default 
> value is auto set to "manual migration" in UI because it's not sure if this 
> VM should be automatically migrated as part of internal events (such as load 
> balancing policies or host turning into maintenance mode), without letting 
> the user controlling it. 
>
> Sometimes there are few destination hosts to migrate to and we want to let 
> the user controlling that since performance may decrease or migration may 
> fail.
>
> But if you are sure that the cluster contains hosts with identical cpu model 
> and identical number of sockets, threads and cores as the source host, and 
> you don't mind that VM will be migrated whenever required, then you can 
> definitely change the migration value to "Allow manual and automatic 
> migration".
>
> Thanks,
> Sharon
>
> On Sun, Oct 20, 2019 at 2:42 AM Strahil Nikolov <[email protected]> wrote:
>>
>> Hello Community,Dev,
>>
>> does anyone know why only "Manual Migration" allows passing through the CPU 
>> from the Host to the VM ?
>>
>> In many environments, the Clusters are having the same CPU model in order to 
>> avoid any issues. Have you observed any issues with that ?
>>
>> Best Regards,
>> Strahil Nikolov
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