[SunRescue] Tech Spec Question on RAM for SS20

[Paul Theodoropoulos]

ram chips gradually fall away from their spec as they age. it's 
possible that one or more of the DIMMS has fallen too far out of 
spec to be able to handle the doubled demands that two processors 
place on the memory.

i ran a quad hypersparc-100 sparc 20 for a couple of years of 
demanding production use (ISP shell server, mail server, web 
server, can opener, shoe polisher, etc) with 512M of ram - over 
those years, a couple of the DIMMS went bad, with syslog reports of 
errors from them. replacing them with new cleared up the problems. 
It was little more than 'natural' aging.



At 01:15 AM 6/2/00, you wrote:
>Yes that Ram will work in the SS20.
>
>SS20 uses 60ns or faster.
>
>Dunno what your problem is with the second SM-71.
>
>Cheers,
>
>Mike N
>----- Original Message -----
>From: Volker Schmidt <volker at illuminatus.mz.rhein-main.de>
>To: <rescue at sunhelp.org>
>Sent: Friday, June 02, 2000 3:23 AM
>Subject: [SunRescue] Tech Spec Question on RAM for SS20
>
>
> > Got checking again on my SS20 w/one SM71 today. Ken Hansen put 
> me
> > on the track again.
> >
> > I've three DIMMs inside my machine:
> >
> >         HM 5116400ATS6
> > SAMSUNG KM 44C4000AT-6
> > SEC     KM 48C2100AT-6
> >
> > Am I right, that these one's are 60ns Chips? Is this OK for a
> > SS20?
> >
> > What combination of RAM/CPU/MBUS-Speed is allowed/certified?
> >
> > Still have troubles installing a second SM71 (see Message-ID:
> > <20000420214456.A3044 at illuminatus.mz.rhein-main.de>, in Apr 
> '00).
> > Got lots of memory kernel panics.
> >

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Paul Theodoropoulos | paul at anastrophe.com | Unix Systems 
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