Re: Voting Disks and OCR on 11.2.0.2

From: Zabair Ahmed <roon987_at_yahoo.co.uk>
Date: Wed, 19 Sep 2012 11:58:38 +0100 (BST)
Message-ID: <1348052318.83594.YahooMailClassic_at_web171306.mail.ir2.yahoo.com>

So, back to my original question. Do I have a single point of failure?
 

I have single raw/block device LUN which is configured within ASM as an  ASM diskgroup (ASMSYS) with EXTERNAL REDUNDANCY to hold a single Voting Disk. At the SAN level I am told by the sysadmin that it's either RAID 1 or RAID 5.  
 

I concur with you about having the OCR mirrored.
 

Am I just being silly or could I have a serious issue down the line...

• On Wed, 19/9/12, Radoulov, Dimitre <cichomitiko_at_gmail.com> wrote:

From: Radoulov, Dimitre <cichomitiko_at_gmail.com> Subject: Re: Voting Disks and OCR on 11.2.0.2 To: "Zabair Ahmed" <roon987_at_yahoo.co.uk> Cc: oracle-l_at_freelists.org
Date: Wednesday, 19 September, 2012, 11:32

On 19/09/2012 12:26, Zabair Ahmed wrote:

Also the ora_asmsys_disk01 is a raw/block device, see below..
 

/home/grid > ls -trl /dev/ora_asmsys_disk01 crw-rw----    1 grid     asmadmin     18, 82 19 Sep 10:54 /dev/ora_asmsys_disk01

Is this supported in 11.2.0.2. I thought I read that raw/blocks devices are not supported for storing the Voting Disk and OCR. Am I missing something here? We are using ASM to store the VD and OCR. I believe this is just a LUN that contains an asm disk wich is part of the ASMSYS disk group ... Are you worried about the "c" (character special device)? I believe this is normal, you have block and character special devices for that LUN. 

Dimitre

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Received on Wed Sep 19 2012 - 05:58:38 CDT