[lug] SW Raid question

[Zan Lynx]

On Mon, 2007-07-23 at 23:48 -0600, dio2002 at indra.com wrote:
> I just purchased a new SuperMicro system with an onboard 4 port SATA ICHR7
> adaptec controller.  SM does have source code for this controller but it
> is fakeraid.
> 
> I bought the system with the intent of disabling the raid support on the
> controller so that i could run mdadm SW raid on it.  However, now that i
> have the system, i've found out that disabling the raid support on the
> bios puts that sata controller in "compatibility" mode, which means that
> it drops to ATA 100 speed.  wtf!  shouldn't this be able to operate in
> some kind of "std" SATA mode?  that's a pretty big drop down in
> performance.

What happens if you put the card into RAID mode, but do not define an
array and let Linux load its regular SATA driver?

Most cards I know of will present the drives not in an array as separate
drives.
-- 
Zan Lynx <zlynx at acm.org>
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