Watched it happen. One of our experienced operators heard a high sounding screech come from a 2314 disk drive. He spun-down two drives, moved the bad drive to the working drive, and tried again. Ended up literally scratching 3 of our 5 2314 drives. Nice long curved scar on the top surface, had no idea of the total damage. We were a VM shop using the 2314 for 1401 emulation only, sure wish I had known about VM/Magic or other disk emulators (or had the talent to translate CCW's under VM).
-----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Jesse 1 Robinson Sent: Saturday, 13 April, 2019 12:19 To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Incoming | Computerworld SHARK TANK Legendary--possibly apocryphal--story of the of the 3330 pack that got warped enough to ruin heads but did not itself disintegrate. Over zealous operator moved the pack from one drive to another looking for an operable one. Until they were all dead. True or not, nobody misses those days. . . J.O.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 323-715-0595 Mobile 626-543-6132 Office ⇐=== NEW robin...@sce.com -----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Tom Brennan Sent: Saturday, April 13, 2019 10:27 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: (External):Re: Incoming | Computerworld SHARK TANK Interesting story! The only time I've actually seen a head crash was on an old 3330 where I had just popped in a RES pack. I walked over to the hardware console to IPL - the old 3270 where you had to type L1/A2 or whatever those commands were. The hardware console told me I had an I/O error, and there was a red light on the device. I pushed the button to open the 3330 drawer and there were bits of disk head all over the inside. On 4/13/2019 9:16 AM, Gabe Goldberg wrote: > Many years ago I had friends in old DEC building in Maynard, MA. They > had story of periodic head crashes on monster disk drives with > vertically spinning platters. They realized cause: trucks backing into > loading dock hitting and shaking the building -- since platters were > oriented perpendicular to truck motion. Solution: turn drives 90 > degrees to align platters with truck motion. At worst, I/O errors but > no head crashes (I guess heads flew much higher than on today's > devices). I'll ask veterans I know of that time/place to confirm... > > ITschak Mugzach<imugz...@gmail.com> said: > > That reminds me another story. ten years ago a client of us installed > a new hitachi disk array. The technician installed and configured the > array, but for some reasons, it was not immediately used by the > client. few days later, the client tried to connect to the array and > it was down. it was repeatedly don everyday afterwards. investigation > showed that the the people who cleans the computer room unplugged the > power for the vacuum cleaner... The array was using a standard power plug. ---------------------------------------------------------------------- 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
