On 06/17/10 09:51, Kelman, Tom wrote:
I was in a shop in the early 1980s where we had a very bad experience of the power being cut by the use of the emergency switch. There was a building maintenance man in the machine room. When he went to leave instead of pressing the button to activate the door to the mantrap, he pressed the emergency power down switch. They were very close together. It took us the better part of a day to get everything back up. The processor was no problem, but a few disk drives were troublesome. That incident resulted in them moving the emergency power down switch away from the door switch, and a cover was put over the emergency power down switch.
We called it a 'Sheldon shield' after an operator hit the IML button on the old 3033 console keyboard several times unexpectedly.
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