Installation and Upgrade > Installation and Configuration Guide - Update Existing Installation > Updating an Existing Installation > Updating Other Windchill Products > Enabling Remote File Servers
  
Enabling Remote File Servers
If the system you are updating uses replica servers, you must install the Windchill File Server software on the remote servers before the update. When installing the target system with the PTC Solution Installer, select the option Enable Remote File Server Support on the optional features panel.
For more information on how to install remote file servers see:
Replication
Installing a File Server Remote Site Using PSI