If you are concerned about downtime, then don't change the Domino name. You can change the NT/2000 name; that isn't a problem. Just make sure all DNS entries are updated. Changing a Domino name, especially the administration server, requires a lot of planning and preparation. If people access the server, it can be even more daunting. Changing icons can be problematic. You can try it, but if time is running short, I wouldn't do it.
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