If you are upgrading your ZENworks for Servers 3.x servers and also have new servers where ZENworks for Servers has not yet been installed, you must do the following to prevent interoperability problems:
Installing the new Distributors first might be easier.
It doesn't matter whether Subscriber servers are installed or upgraded first. However, to complete upgrading servers where Novell ConsoleOne® is installed on a server, you must use the installation program (the upgrade program does not update the ConsoleOne snap-ins). Therefore, you could upgrade first, then update the ConsoleOne snap-ins on those existing 3.x servers while installing to the new Subscriber servers.
These two steps ensure that all Distributors and Subscribers will be interoperable.