The following message is a courtesy copy of an article that has been posted to bit.listserv.ibm-main,alt.folklore.computers as well.
[email protected] (Ted MacNEIL) writes: > She suddenly screamed that we had to stop the system, it was an > emergency. The rookie obliged and hit the big red button to the right > of the screen. Bamf! It took four Amdahl reps over 12 hours to > replace everything that overheated, because with an EPO, even the fans > stop. there is the early 3081 TCM story about heat exchange had flow sensor on the inboard side ... but not on the outboard side (of the heat exchanger). one customer lost flow on the outboard side of the heat exchanger ... and there was so much heat in the system ... that by the time the thermal sensors caught the rise in temperature ... it was too late ... and fried all the TCMs (a TCM ran something like low six figures). after that, systems were retrofitted with flow sensors on the outboard side. description (some) of 3081 technology http://www.jfsowa.com/computer/memo125.htm misc. past posts mentioning frying 3081 TCMs http://www.garlic.com/~lynn/2000b.html#36 How to learn assembler language for OS/390 ? http://www.garlic.com/~lynn/2000b.html#38 How to learn assembler language for OS/390 ? http://www.garlic.com/~lynn/2001k.html#4 hot chips and nuclear reactors http://www.garlic.com/~lynn/2002d.html#13 IBM Mainframe at home http://www.garlic.com/~lynn/2004p.html#35 IBM 3614 and 3624 ATM's http://www.garlic.com/~lynn/2004p.html#36 IBM 3614 and 3624 ATM's http://www.garlic.com/~lynn/2004p.html#41 IBM 3614 and 3624 ATM's http://www.garlic.com/~lynn/2008i.html#96 A Blast from the Past http://www.garlic.com/~lynn/2009b.html#77 Z11 - Water cooling? http://www.garlic.com/~lynn/2010d.html#43 What was old is new again (water chilled) -- 42yrs virtualization experience (since Jan68), online at home since Mar1970 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
