One Comment on “Which BIOS setting is required for a VMware ESXi 5.0 host to support Cisco VM-FEX universal pasthrough mode?”

1. Michael Churchill says:

   January 13, 2015 at 7:38 pm

   Cisco recommend that you create a named BIOS policy as VMwarePassThru so that you can identify it as being used for VM-FEX in high-performance mode.

   You must enable these specific parameters in the following BIOS settings:
   • Processor—Enable Virtual Technology (VT) and Direct Cache Access.

   You must enable VT if you intend to run 64-bit VMs on the ESX/ESXi host. An
   ESX/ESXi host will not run 64-bit VMs unless VT is enabled

   For directed IO – Cisco recommend the following parameters are set

   ◦VT for Directed IO
   ◦Interrupt Remap
   ◦Coherency Support
   ◦ATS Support
   ◦Pass Through DMA Support

   see

   http://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/sw/vm_fex/vmware/gui/config_guide/b_GUI_VMware_VM-FEX_UCSM_Configuration_Guide.pdf

   so A look correct

   
   
   
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