Starting with version 12, you download the installer for your additional pollers and web directly from your primary server. Once you have upgraded the primary server, navigate to Settings --> All Settings --> Polling Engines and there will be a link in the upper right hand corner of the page to download the installer for your other servers:
Then, run this installer on your additional pollers/web server and follow the prompts. This pulls the correct installers for the modules from the primary server, ensuring you are installing the same version as on the primary.
Thank you much for the reply.
Is there any new documentation on best practice to update?
Washington Technology Solutions
System Center Operations Manager Administrator
Solarwinds Orion Administrator
Managed Server Group
I was provided this URL when I had pretty much the same question though I got the information after my upgrade:
This ought to help. The scalability installers are neat when everything goes good.