GEtting enough SCSI devices is a problem with only 5 or 6 PCI slots. If you
use a dual or 3-channel adapter, some of the problems will go away, though.
I've not yet figured out how to make the NT box happy with the AHA3985, but it
has 3 narrow channels, to which I can hopefully attach all my old <10GB Narrow
SCSI drives. That will accomodate 21 of them. Just for cosmetic reasons, I'd
like ot have at least one old half-height SCSI drive more to fill the one
empty exposed-front bay in that box. Right now it isn't too bad with the
empty half-height (a blockout panel fits the empty space) bay.
Dick
----- Original Message -----
From: "Sellam Ismail" <foo_at_siconic.com>
To: <classiccmp_at_classiccmp.org>
Sent: Monday, February 11, 2002 3:44 AM
Subject: Re: SCSI Bus Problem?
> On Mon, 11 Feb 2002, Jerome Fine wrote:
>
> > Sellam - this one is racked in a tower box as well with TEN 5 1/4"
> > half height drive bays - is that what you are using? I can't begin
> > to imagine TEN 5 1/4" FULL HEIGHT drive bays, but if that
> > is what you really meant, then I guess this box is only half the size.
>
> No, I have 10 half-height 5.25" drive bays. 10 full height would actually
> be 20 half-height, which would be insane :)
>
> > I have been able to do the following with a single internal SCSI cable
that
> > is terminated via an active external terminator (#1 configuration):
> > SCSI hard drive #0 FAT32 - ID=0
> > SCSI hard drive #1 FAT32 - ID=1
> > SCSI hard drive #2 FAT32 - ID=2
> > SCSI Iomega Zip Drive - ID=4
> > SCSI CDROM Drive #0 - ID=5
> > SCSI CDROM Drive #1 - ID=6
> > It all boots and work fine under W98.
>
> I'm going to use SCSI Wide so I can get up to 15 devices on the chain.
>
> > Hint: If I attempt to boot with the same configuration as #2 (i.e. with
> > the 3 Sony drives attached via the external cable) but now with the
> > 3 Sony drives turned off and the 3 SCSI hard drives turned on, I also
> > can't boot - i.e. if I want to be able to switch between the Sony drives
> > and the SCSI hard drives, I must boot with the Sony drives powered
> > on and the SCSI hard drives powered off - and the SCSI CDROM
> > drives removed from the SCSI internal cable.
>
> Probably has something to do with termination on the various combination
> of devices. Even devices that are not powered up can still supply
> termination as far as I know.
>
> Sellam Ismail Vintage Computer
Festival
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Received on Mon Feb 11 2002 - 14:48:52 GMT