UC on UCS & Hyper-threading

[bluejays]

Hello, All,

I am trying to find out the Cisco recommended UCS BIOS setting for UC on UCS deployment. Should I turn on Hyper-threading for ESXi if the CPU supports it?

Is there a document just to talk about any BIOS/setup recommendation setting specifically for UC on UCS deployment?

Thanks,

[cbyington]

I am also curious on what is recommended in regards to hyper-threading for UCS. Does anyone have any information.

[Steven Griffin]

Cisco's docwiki site has everything you need to know about UC on UCS. 

The core UC site is here: http://docwiki.cisco.com/wiki/Unified_Communications_in_a_Virtualized_Environment

The answer to your question about hyper-threading can be found here: http://docwiki.cisco.com/wiki/UC_Virtualization_Supported_Hardware#Processors_.2F_CPUs

     Hyper-threading on the CPU should be enabled when available, but the  resulting Logical Cores do not change UC app      rules.  UC rules are based  on 1:1 mapping of physical cores to virtual cores, not Logical Cores to  virtual cores.

-Steven

[Fouad Mouffok]

Hi,

Ok then, does it mean that the additional virtual cores (when enabling HT) seen by ESXi shouldn't be mapped with UC Apps? One more, how do you make the difference between a virtual core mapped to a Physical Core and a virtual core mapped on a Logical core in ESX ?

Rgds,

./WM