Date: Fri, 10 Dec 2004 17:08:49 -0800 From: "David O'Brien" <obrien@freebsd.org> To: Jon Noack <noackjr@alumni.rice.edu> Cc: Bill Anderson <anderson@wks.uts.ohio-state.edu> Subject: Re: 2120S poor performance Message-ID: <20041211010849.GE50516@dragon.nuxi.com> In-Reply-To: <17418.69.53.57.66.1102618255.squirrel@69.53.57.66> References: <Pine.GSO.4.33.0412081120520.4974-100000@lennier.uts.ohio-state.edu> <17418.69.53.57.66.1102618255.squirrel@69.53.57.66>
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On Thu, Dec 09, 2004 at 12:50:55PM -0600, Jon Noack wrote: > Bill Anderson wrote: > > I've got a 3x72g RAID5 array with U320 disks on an Adaptec 2120S > > controller under Freebsd 4.10. I'm getting about 25MB/s for sequential .. > > What's the cheapest controller that still gives reasonable performance? > > (If you could give a couple different ones, with their associated > > performance (under FreeBSD), or tell me where to find such information, > > that would be great) > > The asr driver is in need of a lot of attention. .. > There are many quality, (relatively) cheap controllers out there, but if > you're looking to stick with Adaptec get a 2130S. The 2130S uses the aac > driver, which is quite well tuned and maintained by Scott Long. The Adaptec SCSI RAID 2120S is not an I2O(asr) controller -- it is an aac(4) controller. The 'out of market' controller mentioned in this thread is the work horse 5400S. -- -- David (obrien@FreeBSD.org)
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