Re: Why "Separating Data and Indexes improves performance" is a myth?

--- Jared.Still@xxxxxxxxxxx wrote:
> What matters is the performance of your system under
> load.  If you have 10 
> disks in
> a RAID 0 with all indexes and data residing on it
> and the performance is 
> somewhat
> lackluster, splitting those disks into two 5 disk
> RAID 0 drives and 
> physically separating
> the indexes and data will not improve performance.
> 

OOH - odd number of disks for RAID 0 >> BRAIN HURTS.

These days, I can only do math in my head in powers of
2.

2 advil plus a dose of the paper at hotsos on
"Aligning  Oracle Blocks with Hardware Stripe
Boundaries".

RAID 1 ( 2 )
RAID 10 ( 4, 8)
RAID 0  ( 1, 2, 4, 8 )

Far better to use that odd number for a hotspare
(although a hot spare for RAID 0 is not really
worthwhile).

RAID F  ... sorry, can't do it.

Pd



        
                
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