Date: Wed, 13 Oct 1999 11:52:24 -0500 From: "Andy Angrick" <angrick@netdirect.net> To: "freebsd-isp" <freebsd-isp@FreeBSD.org> Subject: RE: wierd SCSI problems Message-ID: <NDBBJDAGOKOGNKPLFIBPIEFDCMAA.angrick@netdirect.net> In-Reply-To: <199910131703.KAA31406@pau-amma.whistle.com>
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They are compaq ulta-wide scsi drives that require an adapter to fit on a normal scsi cable. The adapter has a 50-pin connector I believe, but its not the same type of connector. I will check the host adapter termination settings..that is something i haven't thought of. I believe there are 2 options other than automatic...something like high-low or low-high ... The active terminator is on the 68-pin ultra-wide scsi cable. i will take a look the host adapter settings. Thanks for your input. -Andy > -----Original Message----- > From: David Wolfskill [mailto:dhw@whistle.com] > Sent: Wednesday, October 13, 1999 12:04 PM > To: angrick@netdirect.net; dhw@whistle.com > Cc: freebsd-isp@FreeBSD.org > Subject: RE: wierd SCSI problems > > > >From: "Andy Angrick" <angrick@netdirect.net> > >Date: Wed, 13 Oct 1999 11:22:42 -0500 > > >Here's a crude diagram > > Thanks. :-} > > >adapter------>|----->----->|------->|active terminator| > >2940UW | | > > 68-50pin cnvtr 68-50pin cnvtr > > | | > > drive0 drive1 > > > >the adapter is set to automatic termination i believe. I'll need to check > >the bios. > > Given your symptoms, I think trusting the host adaptor's termination > wouldn't be wise. > > Now, I *thought* that the 2940UW had 3 connectors: > > * external 68-pin > * internal 68-pin > * internal 50-pin > > You're apparently not using the external, so we can ignore that (for > now). > > Which internal connector are you using? And why not use the connector > that's appropriate for the drive? (Those converters, unless I'm > confused, don't do anything for any termination.) > > And is the terminator a 50- or a 68-pin terminator? > > Consider the (wide) bus as a pair: "hi" and "lo" (referring to the 8-bt > paths); you need to treat each of those paths separately. > > Cheers, > david > -- > David Wolfskill dhw@whistle.com UNIX System > Administrator > voice: (650) 577-7158 pager: (888) 347-0197 FAX: (650) 372-5915 > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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