"DA Morgan" <damorgan_at_psoug.org> wrote in message
news:1122911715.250803_at_yasure...
> Moe wrote:
>> Hi Everyone
>>
>> I'm setting up a RAC using oracle 10g on a two redhat linux 3.0
>> enterprise boxes and the oracle files are going to be on the SAN (data
>> files, redo logs, etc...)
>> 1- My SAN is set as RAID 5 and RAID 10. so linux sees it as /dev/sda
>> (raid 5) and /dev/sdb (raid 10)
>> 2- I'm going to have the voting disk and registry files of the CRS on
>> an OCFS partition which im going to create on the raid 5. Not sure that
>> this is the best way.
>> 3- Regarding the rest of the oracle files (data files, etc..
>> ORACLE provides these options for cluster storage:
>> raw devices
>> ASM
>> ORACLE cluster file system.
>> I would like to know what is recommended to use.
>> -Since my SAN already has a RAID, what would happen if i use ASM, is
>> it a bad idea?. it's like a raid built on a raid. is there a
>> performance drawback doing that?
>> -Is it suggested to use OCFS for eveything?. I know it is the easiest
>> to use, is their a performance issues using it even for the data files,
>> redo, etc..?.
>> -Is OCFS a file system that can be used on any drive, SAN?
>> -I'm trying to avoid using RAW devices since it hard to manage them
>> plus i need to create a partition for every file.
>> -In cluster storage can i have my oracle files on other file systems
>> like linux ext3 file system?
>> -I'm trying to reach a decision on what file system to have my oracle
>> files on based on fact that i have a SAN setup as RAID 5 and RAID 10.
>> Thanks Moe
>
> Forget OCFS. Oracle is in the process of forgetting it so it is not
> a good direction to go for a new installation. Unless your SAN is
> from Apple RAID5 is also like a bad idea due to the heavy penalty
> of writes and degradation during rebuild.
>
> I'd strongly urge you to look at RAW managed by ASM and let ASM
> provide the mirroring.
> --
> Daniel A. Morgan
> http://www.psoug.org
> damorgan_at_x.washington.edu
> (replace x with u to respond)
Oracle is deep sixing OCFS!?!??! Really?
--
Andreas
Oracle 9i Certified Professional
Oracle 10g Certified Professional
Oracle 9i Certified PL/SQL Developer
"If you don't eat your meat, you cannot have any pudding.
"How can you have any pudding if you don't eat your meat?!?!"
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Received on Mon Aug 01 2005 - 13:09:36 CDT
