From owner-freebsd-hardware  Tue Jul 31 15:24:28 2001
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From: Andrew Gallatin <gallatin@cs.duke.edu>
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Date: Tue, 31 Jul 2001 18:23:53 -0400 (EDT)
To: Joerg Micheel <joerg@cs.waikato.ac.nz>
Cc: hardware@freebsd.org
Subject: Re: 3ware Escalade 7xxx supported?
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Joerg Micheel writes:
 > Hi Andrew,
 > 
 > thanks for the message.
 > 
 > On Tue, Jul 31, 2001 at 05:33:15PM -0400, Andrew Gallatin wrote:
 > > For example, on a dual-channel sym1010 card in a 64-bit / 33MHz PCI
 > > slot on a Dell PowerEdge 4400, we see roughly 23.5 MB/sec from 8 18 GB
 > > Cheetahs (ST318404LC) split evenly across the buses (or nearly 190MB/s)
 > 
 > These are individual drives delivering this performance in parallel, right ?

Yes.

 > I wonder if creating a RAIDO out of them you would get the aggregate
 > performance.

No, you loose a little to overhead.  With ccd, I seem to remember
seeing at least 165MB/sec, but I can't mess with this box right now.

Drew

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