11.18 End User And Developer Machines
The load on an IBM i machine that mixes developers and end users is unpredictable and extremely variable over a short time period.
This type of environment is almost impossible to tune and is almost always subject to poor performance at one time or another.
The advent of the cheaper low end IBM i as developer machines is an attractive and cost effective way of stabilizing the end user environment and isolating the unpredictable developer environment.