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

[Richard B. Gilbert]

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.