[rescue] Ultra 2 upgrade question...

Devin L. Ganger devin at thecabal.org
Tue Apr 5 19:26:31 CDT 2005

on 4/5/2005 4:13 PM velociraptor wrote:

> 0+1? I can never remember the order

The first number is the RAID method being used for the first layer of 
protection, so 0+1 is a pair of stripes put into a mirrored volume, 
while 1+0 is mirrored disks placed into a stripe.

1+0 guards against twice as many failure scenarios, is more resistant 
against multiple disk failures (one per mirrored pair), and requires 
less time to rebuild when failed disks are replaced.

Devin L. Ganger <devin at thecabal.org>
"Aikido is based around the central precept of letting an attack take
its natural course.  You, of course, don't want to impede that natural
flow by being in its way." -- overheard on the PyraMOO

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