In my preceding post, I have covered step by step deployment process of Mediation server pool. This post covers the step by step process to add mediation server in an existing pool.

Open PowerShell and add following features.

Add-WindowsFeature NET-Framework-Core, RSAT-ADDS, Windows-Identity-Foundation, NET-WCF-HTTP-Activation45, Web-Asp-Net45 -Source D:\sources\sxs

Run windows update (KB2982006).

Install Silverlight.

Insert Skype for Business Server 2015 media and run setup.exe.

Run “Install Administrative Tools”

Open Topology Builder and add mediation server pool.

Right click on Mediation pool and click on New Server…

Write second mediation server FQDN.

Now publish the topology.

Open Deployment Wizard and run “Install or Update Skype for Business Server System”

Run “Install Local Configuration store”

Run “Setup or Remove Skype for Business server Components”

Now go to the first mediation server and export the mediation server certificate.

Run “Request, Install or Assign Certificates”

Now import the certificate and assign it.

Follow the same process to add more mediation server in the pool.

Once you are done start services on all the mediation servers by running “Start-cswindowsservice”.