SATA RAID, tested again, blaming IRQs

[Neal Becker]

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On Wednesday 07 April 2004 1:15 am, Jesse Keating wrote:
> On Tuesday 06 April 2004 20:09, Janina Sajka wrote:
> > Does it matter what SATA RAID controller one gets? Or is all SATA RAID
> > broken on FC2.
> >
> > I ask because I'm currently building my first Opteron system.
>
> Avoid onboard SATA raid.  They're all inherently broken.  If you want sata
> RAID, go with an LSI 4port or 6port, or a 3ware anyport.  The onboard
> stuff is just trash unless you use them as a controller only and do
> software raid inside Linux.
>

AFAICT, software raid is great.  It is far more flexible than hardware raid.  
Obviously, there is some load on the CPU, but I'm taking a wild guess that 
the extra load is minimal over the interrupt load that already would be 
needed for disk I/O.
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