Re: RAC in NAS

On 07/26/2006 12:13:42 PM, Kevin Closson wrote:

> Be aware that "Intel I 686 **boxes**" (plural) have more I/O bandwidth
> than the filer. Crack open the filer and you'll see a little
> intel box (depending on model). So all I/O requests have to go
> over an northbridge chipset and out over PCI ethernet. A two node RAC
> cluster will always be able to swamp a single-headed filer. Single
> headed NAS
> (filers) are a bottleneck. Measure sequential writes some time and
> you'll
> see what I mean.

I distinctly remember reading your excellent paper from RMOUG about single-heade filers versus multi-headed filers. I can only wholeheartedly recommend it to anybody who wants to learn a thing or two about NAS and RAC.

-- 
Mladen Gogala
http://www.mgogala.com

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