From owner-freebsd-questions Wed Apr 21 21:36:30 1999 Delivered-To: freebsd-questions@freebsd.org Received: from ptldpop1.ptld.uswest.net (ptldpop1.ptld.uswest.net [198.36.160.1]) by hub.freebsd.org (Postfix) with SMTP id 143DB1542B for ; Wed, 21 Apr 1999 21:36:10 -0700 (PDT) (envelope-from dpilgrim@uswest.net) Received: (qmail 23785 invoked by alias); 22 Apr 1999 04:33:39 -0000 Delivered-To: fixup-freebsd-questions@freebsd.org@fixme Received: (qmail 23769 invoked by uid 0); 22 Apr 1999 04:33:39 -0000 Received: from fdsl89.ptld.uswest.net (HELO uswest.net) (216.161.80.89) by ptldpop1.ptld.uswest.net with SMTP; 22 Apr 1999 04:33:39 -0000 Message-ID: <371EA691.BD1F2CED@uswest.net> Date: Wed, 21 Apr 1999 21:33:21 -0700 From: Darren Pilgrim Organization: Neatly stacked heaps of digital chaos X-Mailer: Mozilla 4.51 [en] (Win98; U) X-Accept-Language: en MIME-Version: 1.0 To: Mark Ovens Cc: "Francis Percival C. Favoreal" , freebsd-questions@freebsd.org Subject: Re: SCSI problem References: <371D79EF.CA43A24B@uk.radan.com> <371E6704.B6E8A560@uswest.net> <19990422012530.D254@marder-1> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Mark Ovens wrote: > On Wed, Apr 21, 1999 at 05:02:12PM -0700, Darren Pilgrim wrote: >> Some of the SCSI HBAs I have stage the spin-ups to avoid overloading >> the power supply. Perhaps this might be the cause? >> > > I didn't know that. Anyway I powered off my system about an hour > ago and when I powered it back up I listened for the 2nd HD spinning > up. I wasn't quite right when I said it only spun up when the BIOS > probes it. It didn't spin up 'til FreeBSD probed it!. > > I've looked at the tech sheet for the drive (PDF file) and there > are a couple of jumpers that control spin-up: > > Disable / Enable Auto Spin Up (JP5) > > This jumper controls how the drive starts when power is applied on > 50 and 68 Pin Drives . If the jumper is installed then the disk > will spin up automatically after power -on reset . If the jumper > is NOT installed the disk will NOT spin up unless the host system > issues a 'START UNIT' command to the disk. On 80 Pin Drives, if > the Jumper is not installed then the disk will spin up automatically > after Power-On Reset. If the Jumper is installed the disk will > not spin up unless the Host System issues a "Start Unit" command > to the disk. > > I've not got this jumper on so it needs a 'START UNIT' command to > spin-up. Does that come from the BIOS or the OS? UIAM, the START UNIT command comes from the HA controller directly. > Auto Start Delay and Delay Start (JP9, JP10) > > The Auto Start Delay and Delay Start pins control when and how the > drive can spin up, with the com bination of Aut o Spin option (pin > #5). When in Auto Spin up and Start Delay mode the drive start will > be delayed by a period of time multiplied by its own SCSI address. > If Auto Spin up is disabled, these jumpers will be ignored. > > Neither of these jumpers are on either but because J5 is off it > makes no difference. If J5 was on then the various combinations of > these 2 will give the following options: > > Spin up immediately after POR (Power On Reset) > Spin up 6 seconds multiplied by the disk's SCSI address after POR > Spin up 12 seconds multiplied by the disk's SCSI address after POR > > Now, I imagine that if this drive was my boot drive and jumpered > the way it is, then I might have the same problem that Francis was > having. Francis: Set the boot drive to ID 0 or set it for immediate spinup if ID 0 is already taken and you can't rearrange the addresses. That way the boot device is always ready by the time the system is ready to boot the OS. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message