RE: RAC File System Questions

I'd recommend ASM. There is safety in numbers and that is where the numbers are. I also get the feeling that ASM is Oracle's strategic direction for shared storage. I know I'm going to take some flak for this but I've seen some flakyness with OCFS & OCFS2. Creating a file, putting data in it on one node, the contents aren't immediately visible on from the other node. Stuff like that. ASM is solid as a rock. Especially 10gR2.    

From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Jeremy Schneider
Sent: Monday, September 03, 2007 9:53 PM To: rama.ari_at_accenture.com
Cc: oracle-l_at_freelists.org
Subject: Re: RAC File System Questions

ASM might be a good fit for you.

The only filesystem you can use for RAC on linux is OCFS. I've setup clusters with the OCR and quorum on both filesystems and raw devices and to me the only difference is what you're more comfortable with.

-Jeremy

On 9/3/07, HYPERLINK "mailto:rama.ari_at_accenture.com"rama.ari_at_accenture.com <HYPERLINK "mailto:rama.ari_at_accenture.com"rama.ari_at_accenture.com > wrote:

We are in the process of setting up Oracle RAC on Redhat Linux.  

I need RAC expert's comments for the following questions.  

1. What type of filesystem are you using for Oracle datafiles?
2. Are your implementation(s) using raw partitions or a cluster file system for the OCR and voting disks?
3. If using raw partitions with Linux can you describe any challenges you had with device discovery?

Thanks,

Rama  

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Jeremy Schneider
Chicago, IL
HYPERLINK
"http://www.ardentperf.com/category/technical"http://www.ardentperf.com/cate gory/technical

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http://www.freelists.org/webpage/oracle-l Received on Tue Sep 04 2007 - 20:16:17 CDT