Re: DASD failure

[Tim Shepherd <tshepherd@xxxxxxxxx>]

Hi All,

We had a string of 9332-600's, which would fail now and again. We then had
three go in one week, and not the same drive. We then found out from the
IBM ce that this was a problem at a couple of sites in the immediate
vicinity (thanks for telling us!!!). It turned out the the local "power
distribution place" had a "floating earth" and was sending out spikes down
the earth and bypassing our UPS. We then installed a separate earth and
never had another problem. We then moved to an EMC Harmonix with RAID-5 and
last year we replaced it with an EMC symmetrix disk subsystem using RAID-5.
Since our last 9332 fell over we have had no downtime due to disk since
then, May 1994. 

Hope that helps, you never know!!!

Tim Shepherd
Fraser Alexander Limited 
Boksburg
South Africa

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