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  • Subject: Re: DASD failure
  • From: Rich Puhek <rpuhek@xxxxxxxxxxxxxx>
  • Date: Tue, 21 Jul 1998 07:16:23 -0500
  • Organization: ETN Systems Inc.

Seems a little on the excessive side. One of my clients is running an AS/400 
with 9336-400's and 600's. They've had three failures in the last 3 years, plus 
one drive that reported exceeding operating parameters that we swapped out 
before it could crash. Your
drives are hopefully a little newer than those are. Of course, 5 failures/ .5 
years / 40 machines = .25 failures per machine per year (I think... my math 
coprocessor quit), which isn't too bad if you've got a lot of drives per 
machine.

If you have an IBM service contract, I'd ask your CE for an opinion. He/She may 
have a feel for external factors specific to your machine (like intermittent 
power, excessive heat, vibration, etc). It's a long shot, but might lead you to 
something that could
improve your uptime.

--Rich

Denis Robitaille wrote:

> Hello all,
>
> Our company has about 40 AS/400 in north america. The machines are betwen 1 
>and 4 years old. In the last 6 months, we had to replace 5 disk due to failure 
>(crashed). To me this number of crash seems High but IBM told us this was 
>noting out of the ordinary.
>
> I dont have the number but i tought that the mean time between failure of the 
>AS/400 was much greater.
>
> What do you think?
>
> Denis Robitaille
> Cascades inc.
> Tel: 819-363-5187
> DRobitaille@cascades.com
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