From owner-freebsd-alpha Fri Oct 4 8:56: 1 2002 Delivered-To: freebsd-alpha@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id F098237B401 for ; Fri, 4 Oct 2002 08:55:54 -0700 (PDT) Received: from qescan1.qgraph.com (QESCAN1.qgraph.com [206.158.124.7]) by mx1.FreeBSD.org (Postfix) with SMTP id 564AC43E7B for ; Fri, 4 Oct 2002 08:55:54 -0700 (PDT) (envelope-from Aaron.Schroeder@qg.com) Received: from 192.168.200.29 by qescan1.qgraph.com (InterScan E-Mail VirusWall NT); Fri, 04 Oct 2002 10:55:49 -0500 Received: by sxsmtp2.qgraph.com with Internet Mail Service (5.5.2656.59) id ; Fri, 4 Oct 2002 10:55:49 -0500 Message-ID: <025596A38A894B45AFE62346A6BF47464E2E9A@waexch1.qgraph.com> From: "Schroeder, Aaron" To: "'chris@evilelement.net'" Cc: freebsd-alpha@FreeBSD.org Subject: RE: Alpha PWS 500au SCSI Transfer Rate Date: Fri, 4 Oct 2002 10:55:44 -0500 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2656.59) Content-Type: text/plain; charset="iso-8859-1" Sender: owner-freebsd-alpha@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org I stand corrected, I only have 1020's... :( -----Original Message----- From: Chris Brotherton [mailto:chris@evilelement.net] Sent: Friday, October 04, 2002 10:44 AM Cc: freebsd-alpha@FreeBSD.org Subject: Re: Alpha PWS 500au SCSI Transfer Rate Schroeder, Aaron wrote: > IICRC, those Qlogic 1020/1040 cards were only fast-wide cards and not > Ultra... > > Your new hard drive may be Ultra SCSI, but in order to talk to the card, the > drive has downgraded itself to fast wide. > > If you get an ultra wide card, you will see the 40Mb figure. In reality, > you'll never see those transfer rates anyways. The 20MB and 40MB numbers are > just that: numbers. In reality, the most you will get off any given > Ultra-Wide/Fast-Wide SCSI chain is anywhere from 7-12Mb a sec, and that's > flying. > > Ultra160 and Ultra320 are completely different scenarios, those busses > absolutley scream! > > AJ Schroeder > > -----Original Message----- > From: Chris Brotherton [mailto:chris@evilelement.net] > Sent: Thursday, October 03, 2002 11:09 PM > To: freebsd-alpha@FreeBSD.org > Subject: Alpha PWS 500au SCSI Transfer Rate > > > I am a newbie to both SCSI and FreeBSD. > > I have a Digital PWS 500au with an on board Qlogic 1040B Ultra Wide SCSI > Controller. I used to have an IBM Fast wide SCSI hard drive that was > correctly probed with the following message in dmesg. > > da0 at isp0 bus 0 target 0 lun 0 > da0: Fixed Direct Access SCSI-2 device > da0: 20.000MB/s transfers (10.000MHz, offset 8, 16 bit), Tagged > Queueing Enabled > > I recently replaced this hard drive with a new Seagate ST336706LW - > 36ES. I notice the following dmesg. > > da0 at isp0 bus 0 target 0 lun 0 > da0: Fixed Direct Access SCSI-3 device > da0: 20.000MB/s transfers (10.000MHz, offset 8, 16 bit), Tagged > Queueing Enabled > > My question is: Why doesn't this drive operate at 40.000MB/s since it > is backwards compatible with Ultra Wide SCSI? Do I need to set > something up in the SRM before booting FreeBSD? > > Here is the SCSI controller detection lines from dmesg: > > isp0: port 0x8000-0x80ff mem > 0x81080000-0x81080fff irq 3 at device 4.0 on pci1 > isp0: interrupting at CIA irq 3 > > Thanks for your help. > > Chris. > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-alpha" in the body of the message > > To Unsubscribe: send mail to majordomo@FreeBSD.org This SCSI controller is on the motherboard and the model number is 1040B. According to Qlogics website, this controller is ultra wide. Chris. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message