[Info-vax] Device numbering in a "Pizza Box"

[Rich Jordan]

On Mar 29, 4:47 pm, "Richard B. Gilbert" <rgilber... at comcast.net>
wrote:
> Christoph Gartmann wrote:
> > Hello,
>
> > can someone enlighten me about the devices in a small storageworks rack
> > (BA364)? I had to replace one of the drives. The old one was DKB200:, the
> > new one appeard as DKB1500:. I removed the latter and replaced it with a
> > different one just out of curiosity. This time the new drive didn't show up,
> > so I exchanged the position with DKB300:, first by replacing the new drive
> > with the one on DKB300:, then putting both disks in.
>
> > Now I realize that they both appear as DKB300:, that is, they only work
> > if the other one is not present :-(
>
> > I did a "IO AUTOCONFIGURE" in SYSMAN after each change. But how do I convince
> > this box or OpenVMS 7.3-2 that only one disk should be DKB300: and the other
> > one something different?
>
> > Regards,
> >    Christoph Gartmann
>
> The BA353-AA has three small DIP switch packs on the rear next to the
> SCSI connector.  These DIP switches are used to set the drive ID of the
> drives in the three drive bays.
>
> Now the drives themselves can be jumpered if someone is prepared to take
> the drive out of the caddy, install berg jumpers, and put it back in the
> caddy.  Doing so is NOT a good idea.
>
> I don't recall ever encountering a BA-364.  Look at the back of the box
> and see if there are some DIP switches there.

BA353 is an 8-bit box.  I don't think there's any way you could get a
DKx1500 unit number out of it. without serious cable jiggering.

I have a BA364 in storage, not easily accessible but the manual is
here.  It definitely has DIP switches on the back behind the bezel,
one bank per drive slot.  Straight binary with switch one in each bank
being the least significant bit.  If you're using the CDROM bay that
drive needs to set its own ID.

Rich