Bill, thanks for the reply.
Bill Fuller on 12/15/02 11:55 PM wrote >James, > >I have a PCP 210 upgraded to G3/400 via PowerLogix; >running 8.6 w/OEM Adaptec 2940UW and multiple external UW drives... >as well as scanner and Zip on 50-pin motherboard bus. > >See comments below... > >bill fuller >^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ >At 2:071 PM -0500 12/15/02, [EMAIL PROTECTED] wrote: >>Subject: dual SCSI >>Date: Sun, 15 Dec 2002 14:07:24 -0500 >>From: James Mironchik <[EMAIL PROTECTED]> >> >>I'm using a Power Center Pro 240 that's been upped to a G3/400 >>with an XLR8 card. And running OS 8.6. >> >>My main problems are centered on the Ultra SCSI bus. >>The internal drive seems to be rock solid. >>I do have two externals on that buss, though, >>and they are problematic. > >Do you mean using external SCSI bus from Ultra SCSI card? >Not the external standard 50-pin SCI connector from motherboard. Well, I have drives on both busses. >What drives are connected to card internally? >My PCP 210 had only the internal Seagate 'narrow' drive. An IBM DCAS 32160 is internal. >If so, what SCSI card do you have? Adaptec 2930? >Is card Ultra, or Ultra-wide... >What are limitations on SCSI chain length >UW is 1.5 meters - roughly 5 feet It's the 2930BU, OEM card. No way, no how can I get any support on this card form Adaptec. Any other 2930 card is fully supported. As it is, I have still been able to garner some info on the 2930 series. Cable length is well within the 1.5 meter max. A "problem" though may be that the housings for the externals (a Seagate 318417N 18 gig and Seagate 39140N 8 gig) both use Centronics-style 50-pin connectors. And am I to assume that the N in their model designation refers to narrow? I specifically asked for Ultra, and in fact both drives were listed as Ultra SCSI on web sites & catalog adds. >>While there has been no loss of data, problems include: >>The computer freezes on start-up (as soon as the cursor appears) >>unless I have the drive set for id5 switched on. >>If the drive is switched off, the computer will not boot. >>With it on, all is fine (sort of). >>There are other issues regarding data transfers >>with the disk freezing up in the middle of the process. > >Have you checked drive ID's w/SCSIProbe (freeware)? >Any duplications/ >Should have 5.2 for updated results. > >What driver/formatter are you using for external disks? >Did you upgrade beyond OEM FWB PE version supplied by Power Computing? >That version is not, I think, compatible w/8.6... I've stayed current with FWB's HDTool kit. I'm up to 4.5, while running 8.6. I'm not aware of SCSI Probe. >>Also, the drive on id 3 randomly freezes as well. >>In this case, there is a very weird noise just before the freeze >>that comes form the drive. Both are Seagates (hmmmmm...). > >I have a Seagate external UW drive that gives me problems from time-to-time >prefaced usually by a loud 'CLICK.' Is that similar? No, not a click. More like a scream of agony. :-) >What are the drives...from SCSIProbe? >My internal original Seagate is ST52160N... I listed the model numbers above, form Apple System Profiler. >>Also the Board Control control panel is a big mystery to me. >>The online help seems ok if one knows what one is doing, >>otherwise I would love some more technical information. > >'Board Control' is a control panel unknown to me... >Do you mean 'PowerDomain Control'? >If so, what version are you using? No, it's Board Control. It shipped with the computer. V 2.0.1A, with a copyright date of 1996. I recently tried to install a control application down loaded form Adaptec's sight, but when I tried to install, it said that there were no compatible cards installed. Other 2930 cards were listed, but not the OEM 2930BU. Traditionally, it has been impossible to garner any form of support form Adaptec on this card. >Do settings follow User Guide recommendations? > >And what are settings... mine are > - for 2940UW - NOT 2930, which may be different. >'Termination' - Automatic >'Initiator ID' - 7 (motherboard) >'Parity' - ON > > From pull-down menu 'Board / Set Target Options' > - NO drive selected; Ultra SCSI check box 'checked' >All drives show as >Synchronous Transfer Rate - 20 Mhz >SCSI Disconnection - Enabled >Wide Negotiation - Enabled Actually, I've reduced the transfer rate on the 18 gig drive to 13mhz. It seems to be behaving, and I haven't stressed the 8 gig recently to really be sure of it's performance. >Another source of info is PowerWatch <http://www.powerwatch.com/> >You need to register - but it's free... >Several boards there may be helpful. Thanks, so far this one has been enough, considering my lack of time to really respond. :-) Thanks again, Bill. best James Mironchik New York, NY [EMAIL PROTECTED] -- Power Computing is sponsored by <http://lowendmac.com/> and... 123Inkjets.com <http://lowendmac.com/ad/123inkjets.html> Support Low End Mac <http://lowendmac.com/lists/support.html> Power Computing list info: <http://lowendmac.com/power/list.html> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> List archive: <http://www.mail-archive.com/powercomputing%40mail.maclaunch.com/> Using a Mac? 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