Re: Can I define SCSI device order?

[Paul Furness <paul.furness@vil.ite.mee.com>]

Yeah, I could do that, but it is more than just an issue of making sure
everything is connected; more devices on a single bus = less bandwidth
for each disk. I'm building this for speed.

It's not really that bigger deal, I just wanted to try and make it as
foolproof as possible so that if our main system failed, I (or anyone
else) could plug the RAID array into the backup system and simply boot
it up and have it work. Instead, there's some reconfiguring needed,
which in turn means I have to write more instructions for people to
follow. But not many, though. :)

Paul.


On Tue, 2003-03-11 at 02:07, James Goodwin wrote:
> Doesn't your Adaptec Card have both internal and external connections? 
>  If so, you can just plug your HD's onto the Internal connection and the 
> RAID to the port and make sure your termination is at the END's of the 
> chain (not the card).  You'll also need to make sure the SCSI ID's of 
> the drives are different (I don't remember which one needs to be higher).
> 
> Regards,
> James
> 
> Paul Furness wrote:
> 
> >Absolutely. The "internal" controller is an embedded one on the
> >motherboard. I'm calling it "internal" because it's being used to
> >control the hard disks which are inside the box. The "external"
> >controller is a normal, PCI card. I'm calling it "external" here because
> >it it being used to drive a disk array which is in a different box. 
> >
> >I don't have any option to change the settings of the motherboard; I can
> >indeed disable the embedded controller, but that means I'll need to go
> >and buy another controller. 
> >
> >
> ><sigh> Just once I'd love something important to also be easy. :)
> >
> >
> >On Mon, 2003-03-10 at 15:59, Scott Taylor wrote:
> >
> >  
> >
> >>Internal/External SCSI controllers?  Do you mean one is built onto the 
> >>Motherboard?
> >>
> >>I think you need to ask your hardware manufacturer this one, it may be as 
> >>simple as a jumper.  Personally, if I add PCI controllers to a motherboard 
> >>I usually disable any on-board ones.  Better yet, don't buy motherboards 
> >>with on-board SCSI.  If you must have two SCSI controllers then make them 
> >>both add-on cards.
> >>
> >>Scott.
> >>
> >>-
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> 
> 
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-- 
Paul Furness

Systems Manager
Visual Information Lab
Mitsubsihi Electric ITE BV
Guildford, UK

Steepness is an illusion caused by flat things leaning over.