Re: Will different CPU and RAM matter?

["STeve Andre'" <andres_(_at_)_msu_(_dot_)_edu>]

On Thursday 05 May 2005 14:57, Gary Clemans-Gibbon wrote:
> STeve Andre' wrote:
> > On Thursday 05 May 2005 14:15, Gary Clemans-Gibbon wrote:
> >>Hi All,
> >>
> >>I have a co-located 3.4 web/mail box at a remote location with a P3
> >>1.2Ghz and
> >>1Gb RAM (on-board LAN and video). At home I have another copy of the
> >> exact same motherboard but with a Celeron 1.1Ghz and 512 Gb RAM.
> >>
> >>The question is, can I install 3.7 on the box at home and then simply
> >>take out the HDD
> >>and swap it into the co-lo server? Will it care that it was installed on
> >>a different CPU with less
> >>RAM?
> >>
> >>TIA.
> >
> > Um, if one motherboard is a p3 and the other is a celeron, they aren't
> > the same.  Close maybe, but not the same.  Remember that when at
> > some point in the future two "similar" motherboards do slightly different
> > things to you.
> >
> > Anyway, unless there are odd disk geometry problems, you ought to be
> > able to move the disk over to the new box.  Keep in mind that if the
> > network card differs you'll have to change /etc/hostname.?.  You should
> > be able to do this easily.  Have a backup plan in case it doesn't go
> > well.
> >
> > --STeve Andre'
> > .
>
> Steve,
>
> Actually the two motherboards are 100% identical, bought on the same day
> together. As for backup plan, how does "quickly chuck the original disk
> back in" sound?
>
> thanks
> Gary

Your backup plan sounds excellent. ;-)  You might not belive how many times
I've encountered people who hadn't thought of that.  I'm serious.

Even though the motherboards are the same, there is a part of me that wonders
if there might be a subtle difference between using those two CPUs.  I've seen
too many weird weird problems in the past.  I am extremely cautious about 
this.  For critical systems I always reccomend buying  two identical 
motherboards just to be sure that if it dies a good and exact replacement
exists..  I even look at revision numbers on asic's to be as sure as possible.  
I've "been there" just enough times to be paranoiac about this.

--STeve Andre'