I have setup SharePoint 2013 environment with 02 WFE and 03 APP server please guide where i have to install Nintex workflow WFE or APP Server. I also want to have Nintex High Availability. pls guide thx
Nintex is only installed to the WFE servers. It is sufficient to connect to one of your WFE servers and perform the installation there. Solutions will then be deployed to both WFEs automatically.
More information on best practices on installation can be found here, depending on the Edition you use (2013, 2016 etc.)
Nintex' high availability is connected to your farm's high availability as workflow tasks are shifted between your WFEs.
Hope this helps.