From: Jolet, John (John.Jolet@MISYSHEALTHCARE.COM)
Date: Wed Mar 05 2003 - 14:42:50 EST
what that means is raid 10 is a stripe array (for speed) that is mirrored to
another stripe array (for redundancy). Raid 5 incurs a penalty on write
because the parity information has to be calculated. In practice, I don't
see much performance difference between my raid 5 and my raid 10 arrays.
Raid 5 has a lower disk count requirement than raid 10.
-----Original Message-----
From: Bill Verzal [mailto:Bill_Verzal@BCBSIL.COM]
Sent: Wednesday, March 05, 2003 1:15 PM
To: aix-l@Princeton.EDU
Subject: Re: mirroring raid arrays
RAID-10 is RAID 0 + 1. Generally accepted as the best performed.
BV
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Bill Verzal
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"Adam Hanel" <hanela@BILLINGS.K12.MT.US>
Sent by: "IBM AIX Discussion List" <aix-l@Princeton.EDU>
03/05/2003 12:08 PM
Please respond to "IBM AIX Discussion List"
To: aix-l@Princeton.EDU
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Subject: mirroring raid arrays
Can some one tell me ?
Would it be better (for redundancy and speed) to mirror a raid 5 array? Or
to mirror a raid 0 array?
We are running a 7025-F50 AIX 4.3.3
-Adam
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