On Friday, June 27, 2003, at 01:50  PM, Allen Briggs wrote:

> On Fri, Jun 27, 2003 at 01:12:34PM -0400, Steve Byan wrote:
>> BTW, does the Q950 SCSI hardware fall under the Quadra-AV SCSI DMA
>> umbrella, or is a different driver required for it? If it is a
>> different SCSI driver, is anyone working on one?
>
> It's different.  There are two different common configurations of
> SCSI on the Q950.  The on-board SCSI should work (esp0 & esp1).
> We're not running it through the IOPs, though, which might be
> possible for much more performance.  I haven't really looked at
> that.

I've only been able to get 3 MB/s out of the internal SCSI bus, even 
with a couple of 36 GB Quantum Atlas IV 7200 RPM disks in it. I thought 
it'd at least do 5 MB/s.

> Apple also had a separate PDS card with SCSI on it, though,
> and that's not supported.

Yep, I think those were shipped in the Apple Workgroup Server versions 
of the Q950. I think Apple only supported them under Unix.

Regards,
-Steve
--------
Steve Byan <smb@theworld.com> or <smb@world.std.com>