SCSI Bus Problem?

From: Doc <doc_at_mdrconsult.com>
Date: Mon Feb 11 20:31:01 2002

On Mon, 11 Feb 2002, Geoff Reed wrote:

> At 12:34 PM 2/11/02 +0000, you wrote:
>
> >SCSI Wide also supports plain old SCSI devices. I'm running such a
> >configuration in my web server (3 SCSI Wide drives and 2 SCSI-2)
> >
> >Sellam Ismail Vintage Computer Festival
>
> Yup, sellam's right, be warned however that your SCSI bus will be hobbled
> to the speed of the slowest device usually.

  And that common wisdom, performance-wise, is to use only 1/3 of your
available IDs for active devices. ie. on a wide bus, performance drops
like a rock with more than 5 devices on the chain. Not that this looks
like a high-speed rig to start with.
  Actually, IIRC, a wide bus will be hobbled to SCSI-2, 20Mbit max, but
fater drives will usually run at 20Mb. SCSI-2 allows mixed negotiated
speeds. Put the slowest device at the highest ID.

        Doc
Received on Mon Feb 11 2002 - 20:31:01 GMT