How to Configur Multiple ArcGIS Server instance in 10.1?

Discussion created by arunepuri on Jun 6, 2013
Latest reply on Jun 12, 2013 by TMontefusco-esristaff
In 9.3.1 we have tool to install multiple ArcGIS server instance by using AddInstance.exe.
If we are able to do the similar thing in 10.1, How can we perform this.

What are the advantages/disadvantages in running 2 instances?

If I want to configure my Dev Server for diffrent projects( Proj X, Proj Y). The users working for Proj X can Publish/Read/View only their Proj X related services in Manager when they login. Similarly for Proj Y.

Please provide the required solution and information.