RE: ASM normal redundancy vs external redundancy

Hey Syed,
You'll need to provide some more information, as per some of the responses you've already received. Are you testing on the same hardware? Are the redundancy levels the same between normal and external?  

 I don't believe ASM can read from multiple mirrors, so if your external diskgroup is on a SAN then i'm not surprised you'd see a difference.

From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Kevin Closson Sent: Tuesday, February 13, 2007 10:55 AM To: oracle-l
Subject: RE: ASM normal redundancy vs external redundancy  

Queries on tables which reside on the tablespace that is placed with external redudancy ASM disk were giving faster result than tables which reside with tablespace placed with ASM normal redundancy.  

...Can you give some details about the workload (scans, random I/O) and the actual performance difference you are seeing?  

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