Re: limits on raid

[dean gaudet]

On Sat, 16 Jun 2007, Wakko Warner wrote:

> When I've had an unclean shutdown on one of my systems (10x 50gb raid5) it's
> always slowed the system down when booting up.  Quite significantly I must
> say.  I wait until I can login and change the rebuild max speed to slow it
> down while I'm using it.   But that is another thing.

i use an external write-intent bitmap on a raid1 to avoid this... you 
could use internal bitmap but that slows down i/o too much for my tastes.  
i also use an external xfs journal for the same reason.  2 disk raid1 for 
root/journal/bitmap, N disk raid5 for bulk storage.  no spindles in 
common.

-dean
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