I have a GroupWise system that currently supports 1500 users, and now with the support of the Outlook client available with GMS 2014R2 I need to plan on supporting our users with Outlook. At this point it is hard to say how many of the users will want to switch from the GW client to Outlook but I am thinking it will be well over 50% of those users. In the documentation it states that it will support up to 750 users and 1000 devices - that being said, if I needed to support all of my users with Outlook, how should I design the environment? Multiple GMS servers?

Thanks for any feedback - just trying to keep GW in our environment without having to migrate to Exchange as long as we can.