I currently have two Windows Server 2003 (Enterprise) machines. They run enterprise because we have the need for enough clients in RADIUS that we had to upgrade. We're in the process of upgrading member servers in our domain to Server 2008. One of these servers is a server with only IAS running on it, while the second one has other applications and services running on it. I want to know if we can upgrade the server with only IAS on it to Server 2008 (NPS), and leave the other server on Server 2003 until we can work out all the issues with other applications. Will we still have reduncancy if we're running NPS on one server, and IAS on another. Any documentation that shows this is possible would be appreciated. Thanks! Lee

Yes, you should be albe to run IAS services on a 2003 box while running the other on 2008, as long as you set up the configuraiton the same so that your clients will be processed in the same manner regardless of which server services their requests. I don't have any documentation to provide you or refer you to at this time. I cannot think of any reason why it would not work as expected. You may simply want to set up a test 2008 server and try it out before you proceed on production; virtualize it. Its always a good idea to test before, even if it is well documented. Visit: anITKB.com, an IT Knowledge Base.

Hi, Yes, you can upgrade a server running Windows Server 2003 and IAS to Windows Server 2008 R2 and NPS. During the upgrade process, the server configuration is preserved, including the RADIUS client, connection request policy, accounting, and remote access policy configurations. http://technet.microsoft.com/en-us/library/dd365355(WS.10).aspx Hope it helps.This posting is provided "AS IS" with no warranties, and confers no rights. Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.