Hello,
I want to activate FT on 6 VMs (vSphere 6.7 U1).
This represents 10 vCPU per host.
We have Enterprise Plus licences so we can have up to 8 vCPU per VM.
There will have 3 VM per host so we respect the "das.maxftvmsperhost" paramters (4 by default).
But I have to modify the "das.maxftvcpusperhost" default value (8) to 10.
Is it possible?
Thanks
I'm not sure if 8 vCPU/host is a hard limit or only a supported limit. I think you would have to try to be sure. But personally I would not go beyond a limit stated by the manufacturer. It could be you would have to add another host for this to work.
I found an article where it says you could change the setting but you might run into issues: Changing advanced vSphere FT related settings, is that supported? - Yellow Bricks
I'm not sure if 8 vCPU/host is a hard limit or only a supported limit. I
Test limits for sure.
To my knowledge (See my blog Jeroen points you to above) you can change these settings, they are what VMware engineering and QE has tested with and recommend based on average bandwidth usage. If you increase this number it may have an impact on the required network bandwidth to maintain adequate performance.
I would recommend doing two things:
1. Ask the VMware Support team if it is okay to change this
2. Test if your applications / VMs still perform as expected as FT takes a heavy toll on the network.
Good luck,