We have 6 production terminal servers that load balance, and several non-prod systems for testing/development/etc. All are server 2008 R2 standard. Due to the way our primary line of business app works, if you are logged into a prod and non prod system at the same time, data can be lost or written to the wrong database. This is obviously not good.
Is there a way to allow a user to log into any of these servers (prod, non prod), but not at the same time?