I just fired off feedback to IBM on the lack of a 360/85 link. If we're going to mention models that never shipped to customers, the 360/90 and 360/92 were presumably water cooled.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Parwez Hamid <parwez_ha...@hotmail.com> Sent: Monday, December 9, 2019 3:00 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Water-cooled 360s? The various high numbered Models of the 360 range had a chequered history and its bit difficult to know when these were announced (I am sure the answers are somewhere in Google) . Some were not 'announced' and were just built specially for NASA and 'others' and sold in very small numbers! Its interesting IBM's own Archives for Mainframes doesn't even list the 360/85. https://www.ibm.com/ibm/history/exhibits/mainframe/mainframe_profiles.html BTW: During the very early 70's, I had the privilege of working on a 360/195 at Rutherford Labs in the UK (sister organisation of CERN). It was either the first or second one in EMEA. The others were at The UK Met Office and 2 at VW in Germany. Regards Parwez Hamid​ ________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Seymour J Metz <sme...@gmu.edu> Sent: 09 December 2019 19:12 To: IBM-MAIN@LISTSERV.UA.EDU <IBM-MAIN@LISTSERV.UA.EDU> Subject: Re: Water-cooled 360s? The 360/91 and 360/95 came out before the 360/85. -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Parwez Hamid <parwez_ha...@hotmail.com> Sent: Monday, December 9, 2019 1:47 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Water-cooled 360s? The first 360 water cooled system was Model 85 followed by the various 'variants' of Model 91 (including the 195) Regards Parwez Hamid​ ________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Lester, Bob <bles...@invesco.com> Sent: 09 December 2019 18:36 To: IBM-MAIN@LISTSERV.UA.EDU <IBM-MAIN@LISTSERV.UA.EDU> Subject: Re: Water-cooled 360s? Hi, Yup, I worked on 360/75J and it was air-cooled. BobL -----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Michael Stein Sent: Monday, December 9, 2019 11:29 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: [EXT] Re: Water-cooled 360s? On Mon, Dec 09, 2019 at 12:36:38PM -0500, Phil Smith III wrote: > https://urldefense.proofpoint.com/v2/url?u=https-3A__hackaday.com_2019 > _12_08_the-2Dbarn-2Dfind-2Dibm-2D360-2Dcomes-2Dhome_&d=DwIBAg&c=MWFkEA > Du9ctt4KEmLIuwsQ&r=2NwYDhbHSLSk8Y20BtkXqDR04_yd_pXjwSDkT22AeGs&m=noWKG > abWEloNYvr8dF-eyDFk_R2qlgA9_tNOFSzCQ78&s=HvoeqV2J-z1iKd2zwq0YlYXBHU7Vq > 0ZiJIbQUGSIpOQ&e= sparked a discussion on a private list about air- > and water-cooling. I'm quite sure that the /44 and /75 we had at > UofWaterloo were air-cooled, because we had no water. (That was one of > the motivations for VM SSI, because we couldn't go bigger than the > 4300s: we had four 4341s in an SSI configuration.) The 360/91 was water cooled. On power up with high humidity care had to be taken to avoid condensation/rain in the CPU. I'd suspect that the 360/75 was water cooled but appears to be air cooled: https://urldefense.proofpoint.com/v2/url?u=http-3A__bitsavers.org_pdf_ibm_360_fe_2075_223-2D2875-2D1-5F2075-5FProcessing-5FUnit-5FField-5FEngineering-5FManual-5FVolume-5F4-5FMar66.pdf&d=DwIBAg&c=MWFkEADu9ctt4KEmLIuwsQ&r=2NwYDhbHSLSk8Y20BtkXqDR04_yd_pXjwSDkT22AeGs&m=noWKGabWEloNYvr8dF-eyDFk_R2qlgA9_tNOFSzCQ78&s=0Huvu4ip5ZaCxUYYi7-T1od7PriGEc5R9SaBzeFRDio&e= see page 10 which says: cooling: Main Frame force room air, 3350 cu.ft./min. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN **************************************************************** Confidentiality Note: The information contained in this message, and any attachments, may contain confidential and/or privileged material. It is intended solely for the person(s) or entity to which it is addressed. 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