Date: Tue, 31 Jul 2001 18:23:53 -0400 (EDT) From: Andrew Gallatin <gallatin@cs.duke.edu> To: Joerg Micheel <joerg@cs.waikato.ac.nz> Cc: hardware@freebsd.org Subject: Re: 3ware Escalade 7xxx supported? Message-ID: <15207.12281.631021.280639@grasshopper.cs.duke.edu> In-Reply-To: <20010801093858.D17381@cs.waikato.ac.nz> References: <3B6597A3.2EDC3A9C@we.lc.ehu.es> <200107310755.f6V7thd01635@mass.dis.org> <20010801090829.B17381@cs.waikato.ac.nz> <15207.9243.594273.686530@grasshopper.cs.duke.edu> <20010801093858.D17381@cs.waikato.ac.nz>
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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 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message
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