Date: Thu, 03 Oct 2002 22:08:43 -0600 From: Chris Brotherton <chris@evilelement.net> To: freebsd-alpha@FreeBSD.org Subject: Alpha PWS 500au SCSI Transfer Rate Message-ID: <3D9D144B.7080003@evilelement.net>
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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: <IBM DCHS04W 2722> 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: <SEAGATE ST318406LW 010A> 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: <Qlogic ISP 1020/1040 PCI SCSI Adapter> 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
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