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
