File protection ring? I've seen those in multiple colors. Easy to pull apart, until the random tough one popped up.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List [[email protected]] on behalf of Carmen Vitullo [[email protected]] Sent: Wednesday, January 19, 2022 1:29 PM To: [email protected] Subject: Re: What not to do on a z/OS system... yellow ring frizbes :) On 1/19/2022 12:26 PM, Richards, Robert B. (CTR) wrote: > Same story, but a Yellow write ring tossed with force (think dodge ball). > Same result. > > Every time I notice a Plexiglas cover over the EPO button, I smile. > > Bob > > -----Original Message----- > From: IBM Mainframe Discussion List<[email protected]> On Behalf Of > Lennie Dymoke-Bradshaw > Sent: Wednesday, January 19, 2022 1:05 PM > To:[email protected] > Subject: Re: What not to do on a z/OS system... > > At my first job (1975) one of the programmers was chatting to the operators > and then lent against that red button on the wall. Shutdown the entire > machine room of course. > > Lennie > > -----Original Message----- > From: IBM Mainframe Discussion List<[email protected]> On Behalf Of > Mike Shaw > Sent: 19 January 2022 16:44 > To:[email protected] > Subject: Re: What not to do on a z/OS system... > > We once had a data check we could not get past on a 3420 tape. This was > around 1980, MVS/SE 1 or thereabouts. The lead sysprog hit stop on the tape > drive, pulled the leading tape portion out of the vacuum column, rubbed it > gently back and forth between his finger and thumb, and slowly released the > tape back into the vacuum column. He hit start on the tape drive and we got > past the data check and read the rest of the data on that tape without a > problem. No blocks were missed. > > I thought that was magic at the time... > > Mike Shaw > MVS/QuickRef Support Group > Chicago-Soft, Ltd. > > > On Wed, Jan 19, 2022 at 10:31 AM Seymour J Metz<[email protected]> wrote: > >> Back in the old days the R/W heads lifted up when you unloaded a tape >> and moved down when you mounted a new reel. One day an interlock >> didn't interlock and the R/W head mashed the hand of an operator. The >> damage wasn't permanent, but everybody was more cautious after that. >> >> >> -- >> Shmuel (Seymour J.) Metz >> http://mason.gmu.edu/~smetz3 >> >> ________________________________________ >> From: IBM Mainframe Discussion List [[email protected]] on >> behalf of Cameron Conacher >> [[email protected]] >> Sent: Wednesday, January 19, 2022 10:22 AM >> To:[email protected] >> Subject: Re: What not to do on a z/OS system... >> >> A very long time ago, (mid seventies I think) I was loading a tape to >> a tape drive. >> A button on my jean jacket trapped the edge of my jacket sleeve inside >> the tape drive when as the glass closed. >> I stood patiently and waited for the tape processing to complete so >> the tape could unload. >> >> After that, I paid more attention when loading tapes. >> >> Thanks, >> >> .......Cameron >> >> >> >> >> >> From: IBM Mainframe Discussion List<[email protected]> On >> Behalf Of Kirk Wolf >> Sent: Wednesday, January 19, 2022 9:41 AM >> To:[email protected] >> Subject: [External] Re: What not to do on a z/OS system... >> >> Hooray! Now we've got the kind of thread that is the life blood of >> ibm-main :-) >> >> On Wed, Jan 19, 2022, at 7:21 AM, John McKown wrote: >>> I know of one MVT operator who trapped his girlfriend against a 3725 >>> communication controller and dropped a university's entire network. >>> Multiple sites. >>> >>> >> Kirk Wolf >> Dovetailed Technologies >> >> http://secure-web.cisco.com/1cn5-HpTYfIreu2cSKoha63Y8gzW7Fj_PXrE92YSaO >> IYX4-Aa02x-L7Bs1YFxIRmL8cmskPf0sybkr9abzZzF199DWdz0Ykp9FHL5bGGt4xmkeTe >> L0BR-IP-4bbomeF9cRqRy_bfzwte8ereRwNUBuJpR-zoczTxEh9fDeQfNRfZH6VHksinm_ >> XjXYh733Xljj6PtqiGJfh7s1sGbZ79ymHznTYdxWdHlnBE67BXeYHYTdlkiFdjCovYB674 >> dhzGy5dtMVsQ9iTkQKkBwt6w3SQjmsyzXEUWpv401TIfmhcItrgRlmrX75JqZBHJ-DtzhA >> Y4N-beS9ilUZoOQRfGkSjj2c98ccwmf6vN9GYmKP0lA7nZNPFxlqPHXD-BM9eStbm1z-CB >> x7m40jwWuZxedUzGR2pA_y2ZoHHg4FdpvEZtlZOvONrzby1iyUtLqEoas/http%3A%2F%2 >> Fdovetail.com >> < >> https://secure-web.cisco.com/1CMNJvovBdp9yBnlyYMX7XDwMols2kkKGgmrwSROS >> W0hnu2b_NKhNXLtkgwMMcPwd1HBr_ggnaz-jOwBW47DnVEGIt4bpW8COmjVD8XqVin4Eu- >> x_4HLZpGXoDORG_9Dib3tJq7_ABHXsnB_cOZ6onLOncz6m8qRxHlbuSRz29vFEJgKt_Mra >> 5sXumBbRXeklvWffrMgCdm7h3-uIE-BE2zjT8qDyZa9w1nSg6wnBjmblwuVV6lUkPjJm9N >> YO7sjt7IIE3oKSuCrBzJhb8dOF5aXoc4vT0JenP__8Xsug2eziZJMK48OUmxY5e-94ngrz >> sGRHaYOmnzU5tmHh4jet_pvGp2n0pooHyyoGJoI39jy-YnXJwIlOsQ4ks2OtnTA5u6L2rE >> 7KNygGdkGR6GXneZsk9vjAnS0Ih18ujwz99-0vUGfal7K8z518ZueSeQJL/https%3A%2F >> %2Fisolate.menlosecurity.com%2F1%2F3735928037%2Fhttp%3A%2Fdovetail.com >> ---------------------------------------------------------------------- >> For IBM-MAIN subscribe / signoff / archive access instructions, send >> email [email protected]<mailto:[email protected]> >> with the message: INFO IBM-MAIN >> ________________________________ >> American Express made the following annotations >> ________________________________ This e-mail was sent to you by a >> representative of Amex Bank of Canada, P.O. 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