paulgboul...@aim.com (Paul Gilmartin) writes: > The CDC mainframes were liquid cooled. I don't know how the > jurisdictional disputes were resolved. 308x must have had similar > conflicts.
past posts mentioning cdc6600 doing thermal shutdown every week at the same time ... turns out to have been loss of water pressure when break between class happened to coincide with lawn being watered. http://www.garlic.com/~lynn/2008i.html#96 A Blast from the Past http://www.garlic.com/~lynn/2009j.html#72 A Complete History Of Mainframe Computing misc past posts mentioning initially not having flow sensor on external liquid flow; by the time termal sensors recoqnized heat rising it was too late (wasn't enough volume of liquid on the inboard side to accomodate the heat) and fried all the TCMs (all installations were retrofitted with flow sensors on the outboard liquid cooling side of heat exchange) http://www.garlic.com/~lynn/2000b.html#36 How to learn assembler language for OS/390 ? http://www.garlic.com/~lynn/2002d.html#13 IBM Mainframe at home http://www.garlic.com/~lynn/2004p.html#41 IBM 3614 and 3624 ATM's http://www.garlic.com/~lynn/2010d.html#43 What was old is new again (water chilled) http://www.garlic.com/~lynn/2010j.html#71 taking down the machine - z9 series misc past posts mentioning visiting datacenter with new PDUs. They had hired leading engineeering firm to work with PDU company on improving the design (PDU used from switching between external power, battery backup, and local generation). in the tour, they said they just provided it gratis to the PDU company since they needed the improved PDU operation (and at the time of the tour ... the company had already shipped 1000 of the new PDUs just to datacenters in the DC beltway area). http://www.garlic.com/~lynn/2000b.html#85 Mainframe power failure (somehow morphed from Re: write rings) http://www.garlic.com/~lynn/2001.html#61 Where do the filesystem and RAID system belong? http://www.garlic.com/~lynn/2002g.html#62 ibm icecube -- return of watercooling? http://www.garlic.com/~lynn/2009p.html#63 Little bit OT IBM & Air NZ outage report to stay Top Secret http://www.garlic.com/~lynn/2010h.html#78 Software that breaks computer hardware( was:IBM 029 service manual ) -- virtualization experience starting Jan1968, online at home since Mar1970 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
