Linux Hardware RAID Configuration

[Mike Garfias]

more:

Jeff -
my new server has that exact same "raid" controller in it.  Even though you
can set it up in the bios, its not really raid.  I know NV tells you its raid,
but its really not.

Jeff Garland spoke forth with the blessed manuscript:
> Kevin Brown wrote:
> >>So I'll goof around with the bios settings a bit to make sure I have 
> >>them right.
> >
> >Most of those onboard RAID systems for SATA are not Hardware RAID and so 
> >the drives will still each be visible to the host OS.
> 
> I'm not sure if the ones on the AN8 qualify as 'real RAID'.  Basically 
> it appears that the mobo has an NVidia RAID controller onboard.  The 
> BIOS settings clearly allow for the full setup of RAID -- there's a 
> special BIOS utility to define and configure the setup.  When I first 
> boot the machine there's a message about 'valid array'.  It looks like 
> this is all setup correctly.
> 
> I've been reading a number of postings on various sites about problems 
> with this chipset and Linux although it looks like some have it working 
> -- but it isn't clear.  When I run Knoppix startup in expert mode I can 
> see an attempt to load nv_raid drivers which looks like it failed -- 
> however it scrolled by a bit fast to really see -- I'll have to try 
> again.  The other little tidbit is that it looks like these are being 
> treated as SCSI drives even though they aren't -- there are some message 
> to that effect and the Ubuntu setup as well.  Finally, after I boot 
> Knoppix, QTParted still clearly sees them as 2 devices not one...
> 
> Maybe it's not worth goofing with the hardware RAID an just go for 
> software RAID -- Linux can clearly do this. I would assume there is some 
> performance penalty, but it probably doesn't matter -- this isn't for a 
> high volume server or anything.
> 
> Jeff
> 
> 
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