Icontrol upgrade guide, Notes about upgrading and rolling back, Upgrading and application server redundancy – Grass Valley iControl Upgrade Guide User Manual
Page 5: Summary

iControl Upgrade Guide
This document provides instructions for performing an upgrade of an existing iControl
system (version 2.xx or later) to the latest version.
Summary
Notes About Upgrading and Rolling Back
Upgrading from iControl Version 1.xx
Upgrading from iControl Version 2.xx
Upgrading from iControl Version 3.xx
Notes About Upgrading and Rolling Back
Upgrading and Application Server Redundancy
In order for Application Server redundancy to be fully functional, ONE of the following conditions must be
true:
• ALL the Application Servers within a Redundancy Group have iControl version 4.10 or later installed.
• ALL the Application Servers within the Redundancy Group have versions of software earlier (and not
including) iControl version 4.10 installed.