23 May
2009
23 May
'09
7:14 p.m.
The University of Missouri, Rolla data center's 2314's were taken out
one night when a pack was changed. They had a system with 9 drives and
a 360/50. The positioner was hydraulic in the 2314's and it decided
when it loaded the heads to fire them on thru the pack out into the
machine room. The resulting cloud of debris and hydraulic fluid crashed
the remining 8 drives and fried the control unit.
The datacenter was on IBM maintainence and was back up in a week. There
was an army of IBM'ers in suits there for the entire time.
I don't know if Jay recalls this, but it was in either 1972 or 1973.
Jim
William Donzelli wrote:
When I'd
come in, the machine was turned off, and I had to go through
the long rows of CDC "washing machine" type disk drives and power them
up one at a time. Couldn't power up more than one at a time, as the
surge load would cause breakers to pop, and that was definitely not a
good thing as a drive is spinning up. I'd have to hit the power on the
drive, and wait about 45 seconds for the drive to spin up enough that
the main surge was over with before I could hit the power switch for the
next drive.
CDC installations were not power sequenced? Or just Teks?
--
Will