DVD burners and the Adaptec 2200S RAID controller...

[Ted Mittelstaedt]

> -----Original Message-----
> From: owner-freebsd-questions at freebsd.org
> [mailto:owner-freebsd-questions at freebsd.org]On Behalf Of Olaf Greve
> Sent: Friday, May 27, 2005 1:49 AM
> To: Roland Smith; freebsd-questions at freebsd.org
> Subject: DVD burners and the Adaptec 2200S RAID controller...
>
>
> Hi Roland,
>
> First off: tnx for your reply!
>
> > I haven't tried burning DVDs with the ATA driver. The manual page for
> > growisofs says that you should use SCSI devices on OpenBSD
> and NetBSD,
> > but it doesn't mention FreeBSD.
>
> Hmmm, one would guess FreeBSD not to be very different in that
> respect.
> Speed is not really a concern for me, but potential data
> corruption is.
> I just read something about someone having had issues with an ATA DVD
> drive, due to digital line-noise on the regular low cost 40-pin ATA
> cable. Using an 80-pin one apparently solved it. Makes sense.
>
> >>I will use an Adaptec 2200S U320 RAID controller for the
> harddrives, so
> >>perhaps an ATA interface would be easier to configure
> indepenently of
> >>another SCSI device (then again: maybe not). Any advice in
> that respect?
> >
> >
> > I don't think having CAM in the kernel will make it more difficult.
>
> If possible, I'll try to use the generic kernel. AFAIK that covers the
> 2200S. What I'm wondering about is the following: would it be possible
> to use the 2200S as a regular controller for a SCSI DVD rewriter, in
> combination with it running 4 drives in RAID 10 mode?
> The controller has two U320 channels and allows up to 30 devices to be
> connected to it. However, I'm not certain that is assuming RAID only
> set-ups or whether that also allows regular SCSI devices to be
> attached
> to it...
>
> Does anyone have any experience using such a combination?
>

Don't do this.  Leave only hard disks on the RAID array card.  Most
RAID cards only want disk drives on the busses anyway.

Ted