this is not user serviceability -- have you noticed phrase like > supporting system maintenance and repair performed by an IBM customer engineer Even today, i

this is not user serviceability -- have you noticed phrase like > supporting system maintenance and repair performed by an IBM customer engineer Even today, if you are a service engineer servicing expensive piece of equipment, you have some amazing tools. I know an engineer from NetApp for example, and he has most amazing debugging stories, like debugging customers' systems live to find out where the latency spikes come from. The main difference from IBM era is that in the old times, customer could watch the blinkenlights, and now it is all hidden under password-protected accounts.