Raid Configuration

[Price Technology]

On Thu, 29 Jul 2004 19:20:23 +0100, Si Jones <si at bananas.hopto.org> wrote:

> Hi All,
>
> Could someone tell me which one is faster out of mirror or striped  
> software raid in FC, in there experience?
>
> Cheers
>
> Simon Jones
>
>
By the book:
Mirror would write slower, because it has to write everything twice, but  
read faster, because it has two places it can read from.
Stripe would write faster because you have multiple locations to "split"  
the files between.

Caution:  Stripes, in the purest sense, are risky in that if you lose one  
drive, you might as well have lost them all.

RAID 5 is Stripes with Parity.  Lose a drive, no big deal.  You experience  
a performance hit when a drive dies, and just after replacing it because  
the stripes are rebuilding.

Joebewan