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Re: 10g to RAC - what to do to avoid data duplication ?

From: DA Morgan <damorgan_at_psoug.org>
Date: Wed, 02 May 2007 12:26:31 -0700
Message-ID: <1178133989.63284@bubbleator.drizzle.com>


Steve Howard wrote:
> On May 2, 11:18 am, pdxkev..._at_gmail.com wrote:

>>> My question was do you have a link showing this in the Oracle docs
>>> and showing that it is supported?
>> A link to show ASM on NFS is supported?
>>
>>> --
>>> Daniel A. Morgan
>>> University of Washington
>>> damor..._at_x.washington.edu
>>> (replace x with u to respond)
>>> Puget Sound Oracle Users Groupwww.psoug.org

>
> Whether it is supported or not, my question would be why would I want
> to do this? I assume you use losetup to create loopback devices on
> NFS, for which you then create raw device mappings and pass to ASM?
> What am I buying by doing this? I know the benefits of ASM in regards
> to failure groups, balancing, etc., as we use it pretty heavily, but
> it is on EMC storage.
>
> What am I getting by creating one layer of abstraction (NFS), another
> layer with losetup for the loop devices, and then ASM on top of that?
> That seems like a lot of things to break, or am I missing something??
>
> Thanks,
>
> Steve

I sure wouldn't. And having never tried it I'm not even sure it would work. Nor have I found any evidence that it does. Thus my request for the link.

-- 
Daniel A. Morgan
University of Washington
damorgan_at_x.washington.edu
(replace x with u to respond)
Puget Sound Oracle Users Group
www.psoug.org
Received on Wed May 02 2007 - 14:26:31 CDT

Original text of this message

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