To work around this issue, use one of the following methods:•Change the Hosts file on each node so that requests that go to the virtual node go to the local host instead. For example, you can redirect requests that are destined for the virtual node to an IP address of 127.0.0.1. This operation prevents double hop by restricting the requests from Report Manager to Report Server to the same computer. •If you have a native Reporting Services installation, configure the <ReportServerUrl> tag to use "localhost" instead of the virtual server. === Best Practices Reporting Services Scale-Out Deployment Best Practices at http://sqlcat.com/sqlcat/b/technicalnotes/archive/2008/10/21/reporting-services-scale-out-deployment-best-practices.aspx can be followed to ensure all bases are covered. Some of the main aspects that need our attention are - 1. Encryption Keys 2. View state validation 3. Ensuring session affinity on NLB solution 4. HOSTS file entries that aid with session affinity 5. Choice of SPNs against the service accounts and URLs used Benefits When Reporting Services is scaled out, some servers in the deployment can be dedicated for certain activities. "For example, you can enable only the background processing if all report processing is configured as scheduled operations. Similarly, you can run just the Report Server Web service if you only want interactive, on-demand reporting." - this and more is documented in "Turn Reporting Services Features On or Off" at http://msdn.microsoft.com/en-us/library/bb677363(v=sql.110).aspx Note that this will not help run important reports on one server, and other reports elsewhere - as discussed at http://social.msdn.microsoft.com/Forums/en-US/sqlreportingservices/thread/ea9aaa29-07ea-4e49-b41f-63be242d853d
Thanks
Hope this is useful in getting the scale out environment up and running to reap the benefits. If there's any area needing more attention or references, please add those topics to the comments below. Thanks for choosing Microsoft.
VijayReports [MSFT] edited Original. Comment: Bolded text, added section headers for readability