Scale out Sharepoint 2010 Farm

How to Scale Out a SharePoint 2010 Farm From Two-Tier to Three-Tier By Adding A Dedicated Application Server

http://sharepointsolutions.com/sharepoint-help/blog/2011/02/how-to-scale-out-a-sharepoint-2010-farm-from-two-tier-to-three-tier-by-adding-a-dedicated-application-server/

http://www.khamis.net/blog/Lists/Posts/Post.aspx?List=6c8a23d1%2D47ea%2D47e5%2Db56f%2D2bc57cb95b93&ID=48&Web=d64cd8b3%2Da3f4%2D40d8%2D8d93%2D6aa6dc82fcda