Objective 10.1 – Configure Advanced vSphere VM Settings

 

To view previous Objective click, HERE.


 

Objective Topics:

  • Determine how using a shared USB device impacts the environment
  • Configure virtual machines for vGPUs, DirectPath I/O and SR-IOV
  • Configure virtual machines for multicore vCPUs
  • Differentiate virtual machine configuration settings
  • Interpret virtual machine configuration files (.vmx) settings
  • Enable/disable advanced virtual machine settings

 

Determine how using a shared USB device impacts the environment

Before you can use a supported USB device to a virtual machine, you need to add a USB Controller device to the VM, then select the USB version you want to use. Additionally, you can enable the USB device to have vMotion capabilities. 

**Note – vMotion is not supported for USB devices in a DPM (Distributed Power Management) cluster. 

usb1


 

Configure virtual machines for vGPUs, DirectPath I/O and SR-IOV

vGPU’s

If have a compatible physical graphics card installed in a ESXi host you can then share that to your VM’s.

I don’t have any installed but you can see them here:

gpu1

VM Settings:

gpu2

DirectPath I/O

DirectPath I/O allows a guest OS on a VM to directly access physical components on the host such as PCI and PCIe devices. Use cases for this could be high performance graphics cards or sound cards. 

There is a maximum of 6 devices a VM can be connected to.

Limitations: When using DirectPath I/O on a virtual machine you CANNOT suspend, vMotion or perform snapshots on that virtual machine. 

SR-IOV

Using SR-IOV capable network cards, you can enable individual virtual functions (VFs) on the physical device to be assigned to virtual machines in passthrough (VMDirectPath I/O) mode, bypassing the networking functionality in the hypervisor (VM kernal). This mode is designed for workloads requiring low-latency networking characteristics.


 

Configure virtual machines for multicore vCPUs

Go into the virtual machine settings and adjust the vCPU’s accordingly. You can also enable CPU Hot Add (if the guest OS is supported).

VMware KB 2020993

mcpu1


 

Differentiate virtual machine configuration settings

Pretty straight forward. Right click on VM and go to settings. 

vmoptions1


 

Interpret virtual machine configuration files (.vmx) settings

You can modify the vmx file directly with something like notepad or you can edit the configuration perimeters through the Web Client.

VMX2

VMX3


 

Enable/disable advanced virtual machine settings

Disable Acceleration – You can temporarily disable to allow a VM to successfully run and install software. 

Enable Logging – Collect log files for the VM for debugging or troubleshooting

Debugging & Statistics – Allows for collection/recording for further log analysis. 

Swap File Location – You can modify where the swap file resides.

Latency Sensitivity – Configure sensitivity between VM and physical host resource. 

advancedvm1


 

To move onto Objective 10.2 click, HERE

 

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