[oclug] Need advice on server specs
ajh at finux.org
Thu Feb 1 14:48:28 EST 2001
On Thu, Feb 01, 2001 at 02:45:39PM -0500, rjordan at CR1004964-A.slnt1.on.wave.home.com wrote:
> > Why go with SCSI? It's simply expensive and slow if you don't NEED the
> > shared-media aspects.
> > The idea that SCSI is better/faster than IDE is *FALSE*, on the right
> > hardware IDE far outscales SCSI up to about 500G.
> I was pretty sure that the fastest SCSI, was a fair bit better
> than the fastest IDE. Is this really wrong?
> Ultra160 SCSI can do (up to) 160MB/sec vs. 100MB/sec of UDMA100, no?
Per channel. We have cards with 8x66MB/sec channels. You would need
to put in 4 SCSI hosts to get the same, and they're going 100MB/sec
> I know the price difference is not worth it for many applications,
> but it is still a 60% gains (or so). Any qualitative numbers to
> prove otherwise?
Check out the graphs on 3ware.com comparing heavy load on SCSI
vs IDE. The SCSI dies when the bus saturates, we can saturate
Andrew J. Hutton,
Ottawa Linux Symposium, International Linux Developers Conference
http://www.linuxsymposium.org/ July 25th-28th, 2001
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