Windows Server 2008 R2 improves Exchange Server 2010 Outlook Anywhere
Hopefully you have already heard about this and have change your deployment plans, otherwise here it goes. Recently it was compared the performance of the Exchange 2010 Client Access role supporting Outlook Anywhere users on both Windows 2008 SP2 and Windows 2008 R2, and found that the improvements the Windows Team has made in R2 more than doubles the number of concurrent users a given server can support, assuming CPU is the limiting resource.
For more information refer to the Microsoft Messaging Team Blog…
These results will be included in an upcoming TechNet whitepaper on Exchange 2010 CAS Guidance.