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Re: "big" machines running Debian?

On Wed, Feb 25, 2009 at 04:07:54PM +0100, Goswin von Brederlow wrote:
> Umarzuki Mochlis <umarzuki@gmail.com> writes:
> > 2009/2/21 Igor Támara <[[igor@tamarapatino.org]]>
> >
> >           Hi, at some Datacenter here on my country they only want the
> >      machines to be installed with RHEL or Suse, every time I dig more
> >      into those distros I fall in love more with Debian.  This is why I'm
> >      asking about machines that have many cores and lots of RAM and
> >      plenty of disk.
> >      
> >      
> >      Here (at my country) big means more than 4x4 cores , more than
> >      16Gb of RAM, and more than 1Tb on disk, excluding clusters, also SAN
> >      are good to know about.
> >
> >
> > If Red Hat can support it, I don't think that there's any reason Debian
> > couldn't.
> I think the limit is 1024 cores. Or was that fixed to allow more?
> As for ram that really is a cpu/architecture limit and you won't be
> able to find a motherboard that supports as much ram as the cpu(s)
> could handle.
> More than 1TB on disk? Doh. 1TB fits on a single disk. Anything up to

most enterprise site don;t use 1TB size disk, if you want performance
you go spindles, there might be 8 disks (number pulled from the air -
based on raid6 + spares) behind 1TB 

> 16 TB is quite trivial. Beyond that you start to hit the limit on
> filesystem size with ext3 and have to use xfs or ext4 or something. Or
> you have to partition the space iinto 16TB chunks. Also > 16 disks
> requires a big enough case or external storage. For that I would look
> into external enclosures with SAS connector. Don't use SCSI or FC.
> MfG
>         Goswin
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