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Ditto. I had the same exact experience with 3rd party drives constantly
loosing parity. I will only put IBM iSeries drives in to my iSeries
from now on.

Chris Bipes
Director of Information Services
CrossCheck, Inc.

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
smorrison@xxxxxxxxxxxxxxxxxxx
Sent: Monday, December 03, 2007 2:39 PM
To: Midrange Systems Technical Discussion
Subject: Re: IBM System i guidance on disk drives not manufactured by
IBM

At a former employer, we had problems with IBM non-System i drives
failing. These were purchased from a third party drive supplier, who
purchased these higher performance/higher capacity drives from IBM and
applied their own firmware to the drives. We kept two spares on the
shelf
to handle the parity failures. We were running RAID-5, and we never lost

data while I was there, but I believe they did have to reload before I
was
there. We got so good at swapping drives, that finally we replaced all
of
the drives with drives approved by Rochester for the System i, and we
never had another parity failure.


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