Re: 820 DASD crashes

[Chuck Lewis <clewis@xxxxxxxxxx>]

I've heard from a VERY reliable source that there have been replacements for
certain drives...

Anyone else heard anything ?

Chuck

Mark Villa wrote:

> A shop using parity protection on a raid string is really not expecting an
> 820 a few months old to have 2 disks quit at the same moment in time. I am
> not a math wiz by any stretch, but it would seem that with the mean time
> between failure being such a large number the likelihood of that happening
> without an external cause at the exact same moment is less than me being hit
> by a comet in the next 5 minutes.
>
> With that in mind, what is really the cause of multiple disk failures in one
> raid string. Has this happened to someone you know? The UPS for the 820
> comes to mind as a possible problem component.
>
> Anybody know where to start looking online for listing of IBM HARDWARE under
> the microscope as suspect? In other words not PTF's. I am thinking that
> there is not such a listing for hardware since it is not as acceptable to
> have a hardware quality problem as it is a PTF for a bug in software.
>
> Thanks,
>
> Mark Villa in Charleston SC.
>
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