4 ms·
> Then there's hardware reliability. As an example: you can walk inside the mainframe, pull a CPU, and the thing keeps working. Replace that CPU, and the system
by sedachv 10y ago
> Then there's hardware reliability. As an example: you can walk inside the mainframe, pull a CPU, and the thing keeps working. Replace that CPU, and the system makes use of it. None of the system's users ever know that it happened.
From what I understand, until Tandem came along and started to seriously eat away at the market in the late 1970s and forced all the other manufacturers to follow, mainframes were not known for reliability.
- nickpsecurity 10y agoIm still looking for data myself on reliability over time. I recall one OS for IBM mainframes bragging about its reliability because it ran six months or so without a reboot. I was think, "Wow... some good numbers there..."