When your Control Manager 2.5/3.0 (or older version) server manages more than 20 managed products, Trend Micro recommends that you install Control Manager 3.5 on a separate server, rather than upgrading the old Control Manager version to 3.5.
Consider the following points when you plan to upgrade from Control Manager 2.5 to version 3.5 servers:
The Control Manager 3.5 installation detects an existing copy of Control Manager 2.5/3.0, and gives you the option to upgrade it to the latest Control Manager version
Trend Micro recommends that you install Control Manager 3.5 on a separate server, rather than upgrading version 2.5/3.0 to 3.5. This way, the original Control Manager 2.5/3.0 server remains intact, allowing you to de-commission the original server in a timely and effective manner.
Before running the Control Manager 3.5 setup program, back up the Control Manager 2.5/3.0 information, files and registry hives
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