Re: 2120S poor performance

From: David O'Brien (obrien_at_freebsd.org)
Date: 12/11/04

  • Next message: Steven Hartland: "Re: 2120S poor performance" 
    Date: Fri, 10 Dec 2004 17:08:49 -0800
To: Jon Noack <noackjr@alumni.rice.edu>

    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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