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xenapp servers/clones?

1)      Are all xenapp servers in a citrix farm exact clones in terms of the apps installed on them?
2)      If not, and certain users need to access an app that’s on say only 2 of the 5 servers, how does the login process/load balancer know only to put them users on those 2 servers only?
3)      As a general rule how many concurrent users does a xenapp server support? Or is it based on hardware? But as a general rule, any ideas?

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Carl Webster

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Pau Lo

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So re 2 if user x needs to access the finance app that's only published on 2 of the 5 servers in the farm, the login process (what's tech term in citrix??) and load balancer consider that putting user x on the other 3 servers probs won't serve their needs so they need priority ticket to be logged on to one of the 2 servers with the finance app? Is the login and load balancer that savvy? Or could it log them on to a server where their finance app isn't installed to user xs frustration and disappointment?

Carl Webster

The other 3 servers will not even be considered because the app is only published on 2 servers. Only those 2 servers will be considered when calculating which server to place the user on. BUT there is huge downside to that. You break session sharing and no the user will require multiple licenses.

Session sharing is where XenApp will do its best to place a user on a server they already have a session created/running. Creating sessions is expensive in terms of server time & load. Having a user reuse sessions also saves on memory usage.