Re: Raw Logical Partition on AIX for OCR

I have configured 10gR2 RAC on AIX and our SA was able to provide us 1 GB volumes for OCR and Voting disk. Oracle Clusterware installation docs for AIX lists down steps to create a volume group and the raw volumes inside it. Refer to following

http://download.oracle.com/docs/cd/B19306_01/install.102/b14201/storage.htm#sthref539

Regards
Amit
http://askdba.org/weblog/

On Sat, Jan 23, 2010 at 6:01 AM, Sanjay Mishra <smishra_97_at_yahoo.com> wrote:

> Does anybody experience that if I need to create the Partition for
> OCR/Voting on AIX, it has to be part of Volume group and if the disk is part
> of Volume group which can be one disk in Volume Group then its PVID can;t be
> none and thus violates the RAC requirement to have PVID to be none. I know
> Solaris is not an issue where we have to do a partition so as leave the
> block 0 to avoid loss of the device at reboot and used the new partitioned
> slice but Never check it in AIX.
>
> SA menitoned that it is not possible and so we need to go with all 50G Luns
> each for OCR/Voting which will be not wastage of 250G space but also can
> impact IO/backup.
>
> Any AIX environment which has experience the same.
> Sanjay
>
> ------------------------------
> *From:* Sanjay Mishra <smishra_97_at_yahoo.com>
> *To:* LS Cheng <exriscer_at_gmail.com>
>
> *Cc:* oracle-l_at_freelists.org
> *Sent:* Thu, January 21, 2010 5:50:44 PM
>
> *Subject:* Re: Raw Logical Partition on AIX for OCR
>
> Cheng
>
> So can it be used for OCR/Voting.
> Can I have multiple Partition like if I have 3 Physical Luns, then I can
> have 1OCR and 1Voting from one LUN and same from second and 1 voting from
> Third.
> or
> I need to have 5 Physical Lun and create one partition from each and leave
> rest of the space intact
>
> TIA
> Sanjay
>
> ------------------------------
> *From:* LS Cheng <exriscer_at_gmail.com>
> *To:* smishra_97_at_yahoo.com
> *Cc:* oracle-l_at_freelists.org
> *Sent:* Thu, January 21, 2010 5:45:53 PM
> *Subject:* Re: Raw Logical Partition on AIX for OCR
>
> You can use AIX's LVM to create smaller partitions
>
>
> Thanks
>
> --
> LSC
>
>
> On Thu, Jan 21, 2010 at 10:38 PM, Sanjay Mishra <smishra_97_at_yahoo.com>wrote:
>
>> I had to build a 10g RAC where I got 50G OCR/Voting Disk Physical Luns
>> from SAN team with the note that they cannot carved anything less than that
>> in SAN. Is it possible that I can create 1G Partition from each of them and
>> use them so that I can back them easily especially Voting Disk or so.
>> Environment is AIX. If anybody can share the experience. Using Physical LUN
>> as it is not an issue. It is EMC storage.
>>
>> TIA
>> Sanjay
>>
>>
>
>
>

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