> model II I would assume that it was a model I. I checked Snopes and there is no reference to it as being an urban legend.
> Did they reconstitute the brown dust? They removed everything from the 2305's enclosure, cleaned the enclosure thoroughly, cleaned the electronics thoroughly, replaced the disks and R/W heads, spun it for 24 hours without the heads, spun it for another 24 hours with the heads - and there was a power failure during the spin test, requiring them to redo the test from scratch. They still turned it over to us at the promised time. I don't impress easily, but if I ever meet one of them again the drinks will be on me. -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Paul Gilmartin <0000000433f07816-dmarc-requ...@listserv.ua.edu> Sent: Monday, July 22, 2019 3:47 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: DASD nostalgia On Mon, 22 Jul 2019 19:20:33 +0000, Seymour J Metz wrote: >I recall hearing about a UNIVAC shipboard computer where the drum ripped loose >from the deck when the ship was maneuvering quickly. > I have heard this story called apocryphal, as on the FASTRAND page: https://secure-web.cisco.com/1zvtK9Aa7bR13fwABcnXH7JXtThMLnTOOOkOPfz95Jq_cvUBgeQ4FeWdE89xRkSZqTjAI07gRrFcGyT4xQgLu51xvFdNYCYUbxfzD7a-BfMyWl2UYWXkv33-i3hE74uTEeIRJJYMZhN5tGbW5c42Hs_PJ2YXUdciw7A_oGrfdGoux6HP09OZc5PoTOlZy9AnCZWdwwuk6WewHLKnnDr-cz1wiAz60yNRv3tLp8K0P604fZTt8OSEDztEzU-dmYrF0w0MKJ6GbYRYKTdrR9Jmk-_sq_guTbKpRdq_95i0PNxM_M20cAHvMlR-7WiXLCVjeXNLLQEHxz3ydTSCmRGMPQomj3RC9MvI_olG6pzBGQ0X_TkgogfH0J5uTJRRrMNHQBIvONwX5fA9f9ogx-7B_yQ_0u7qU6uEk7Mji3o1bsU9TU6uVMjbIJhQdrg_NVtuv/https%3A%2F%2Fwww.fourmilab.ch%2Fdocuments%2Funivac%2Ffastrand.html But it states that the model II had counterrotating drums to nullify precessional effects due to earth's rotation(!) Can't both be true. >... And I as there when an IBM 2305 did drivek, after multiple power failures, >let out a scream like the wailing of the damned and left nicely polished disks >and a pile of brown dust. IBM promised that they would have it up in an >absurdly short (but still too long) time - and did. > Did they reconstitute the brown dust? -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
