These are the steps to follow when you need to replace (clone) an RDS server in the RDS server farm. This set of instructions follows the replacement of FCIRDPSH-11.
DISABLE OLD SERVER
From the FCIRDPGW server, start computer management and navigate to the farm. Disable logins to the affected server and log off all users that may be logged in on that server.
Remove the server from the farm.
Remove the server from the collection
Log into the server with domain admin creds and disable the PCMiler license if you are able.
While still logged in with domain admin creds, unjoin it from the domain then and do a reboot then login with local admin creds and do a shut down.
Rename the server in VMWare by adding a "_old" to the name i.e. "FCIRDPSH-11_old"
We are now done with the old server.
UPDATE THE PRESYSPREP IMAGE
Log into the Presysprep image with domain admin creds and do any necessary updates to Windows, Nitro PDF, MSRDP, Citrix Workspace, etc.
Clone the Presysprep image to a new server named with the old name (minus "_old")
Presysprep new server
Power on the new server and log in with domain admin creds.
Run presysprep on the new server with the "generalize" and "reboot" options.
Prepare new server
Log onto new server with local admin creds
Set static IP address to what was on the old one. Reboot
Rename (ex "FCIRDPSH-11") and join to FCI doman. Reboot
Activate license for PCMiler.
Install Kaseya (or ask OCG)
Install Datto EDR (or ask OCG)
REJOIN Server to the farm
Log into the FCIRDPGW server with network admin creds.
Start computer management and go to the farm.
Join the server back to the collection
Join the server back to the farm
Enable logins (if necessary)
DONE