I know of a data center had their 3330s, old guys way back, in a basement of a area here in NJ that is on a floor plan,,guess what happened ...flooded out
Sent from my iPad Scott Ford Senior Systems Engineer www.identityforge.com On Mar 23, 2012, at 12:23 PM, Wayne Driscoll <wdri...@us.ibm.com> wrote: > I was told a similar story from operators at my first job in downtown > Chicago. The computer room was on Michigan Ave, overlooking Grant Park, > on the fifth floor. The tape drives were on the east side of the building > (facing Grant Park/Lake Michigan), near the windows. Every day around > sunrise, they would have the same problem with the tape drives unloading, > until the windows were shaded over. > > =============================================== > Wayne Driscoll > OMEGAMON DB2 L3 Support/Development > wdrisco(AT)us.ibm.com > =============================================== > > > > From: > Barry Merrill <ba...@mxg.com> > To: > IBM-MAIN@bama.ua.edu > Date: > 03/23/2012 11:13 AM > Subject: > Re: Friday fun: Halon dumps and POK Resets > Sent by: > IBM Mainframe Discussion List <IBM-MAIN@bama.ua.edu> > > > > At State Farm in 1973, a new bank of tape drives were installed in late > May, and they ran fine until Jun 15, when we began to see very strange > tape ABENDS (starting with Fnnx as I recall), perhaps a dozen each day, > that would then not occur until the next evening. After 10 days and > much research by IBM, I decided to print the step records with those > ABEND codes, and noticed that the time of the first instance of each > day's ABEND was one or two minutes later than the prior day's first > ABEND, but only up to June 22, when its first time was earlier than the > first time on June 21, and subsequent days were also failing earlier by > a minute or two on each successive day. > > I immediately concluded it must be somehow related to sunset, so the > late Tim Wuthrich and I estimated the projected time of that day's first > abend, stayed late, and were adjacent to the new drives when we saw the > sun come thru the window, and one of the tapes that was being read > immediately started to rewind! Those 3420 tape drives had an optical > sensor that read the reflection from the silver strip at the end of the > physical tape, and the sun got into that sensor, causing a false > detection of end of tape. Installed blinds on that window and solved > the problem. > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN > > > > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
