We have a consultant telling us that Exchange 2007 CCR Stretch Clusters have the following limitations:1. 100 mile limit between the Geographically Dispersed Sites2. No more than 20ms for disk latencyCan anyone here confirm any of this?Rick Clemens

Per my knowledge, the consultant is right. Please see the posts in this threadJames Luo TechNet Subscriber Support (http://technet.microsoft.com/en-us/subscriptions/ms788697.aspx) If you have any feedback on our support, please contact tngfb@microsoft.com