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This post was published in 2013 and may be outdated.

Here is my HomeLab configuration:

  • MotherBoard: ASUS M5A97 R2.0
  • CPU : AMD FX-8350 (8 Cores - 4.0Ghz)

What is DirectPath IO ?

Diagram of DirectPath I/O: the operating system is connected directly to the I/O device through the I/O MMU, next to the virtualization layer

How to configure it with an ASUS M5A97 R2.0

  1. Enter into the BIOS and navigate to the Advanced Settings (using F7)
  2. Under North Bridge Configuration
  3. IOMMU is set to “Disabled” by default, set it to “Enabled”

ASUS UEFI BIOS Utility, North Bridge Configuration, with IOMMU Mode set to Disabled

Now save the configuration and boot under ESXi.

And you’re done :slightly_smiling_face:

vSphere client showing DirectPath I/O: Supported

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