On Thu, Oct 30, 2014 at 9:21 PM, John R Pierce pierce@hogranch.com wrote:
On 10/30/2014 1:07 AM, Cliff Pratt wrote:
I used to work with IBM mainframes back when the dinosaurs were hatchlings. At one place I worked the machine was powered off on Friday at 5pm and powered up at 7am on Monday! Can you imagine that these days?
We soon went to 24x7, but the reason was not because the users wanted it. It was because the engineers and systems programmers wanted time with no users.
main reason I remember for keeping stuff running was, it was more reliable if the temperature was relatively constant... temperature flucations led to more hardware failures than any other source input variable.
Yes, that too. We had quite a few cases of machine mondayitis.
Cheers,
Cliff