As you are all aware, GEN4 Nodes are EOSL March 31, 2018. This means everyone has about a year to upgrade. This leads me to my question regarding GRID replacement.

We currently have a multi node GRID, and will be looking to replace it in the near future. The current options are to stand up a new grid, do a root-to-root. With the process, will there be down time? With a root-to-root, will you be able to rename the new grid the source grid's name once root-to-root has completed? I don't want to think about the process of re-registering all of my clients to another grid because of a different grid name. Has anyone completed a root-to-root from GEN4 to GEN4S or GEN4T? Please let me know if I am missing any options? Anything outside of the box I am missing? Downtime is going to be hard to come by, but It appears I have no choice?