Re: ASM Lun Size

From: K Gopalakrishnan <kaygopal_at_gmail.com>
Date: Wed, 26 Sep 2007 14:36:44 -0700
Message-ID: <3b0f44a10709261436y25eab101q24917f9cee15948a@mail.gmail.com>

Shiva,

For a multi tera byte storage, I would be more worried on ASM AU SIZE than the LUN size. You will potentially pollute the shared pool with default 1MB extents. I would go for 8MB extent side and there is an underscore parameter to do that. Raise an SR and get the support blessing before you change the _asm_au_size.

-Gopal

On 9/26/07, Shivaswamy Raghunath <shivaswamykr_at_gmail.com> wrote:
> Hello.
>
> In the process of getting about 6 Terra Bytes of storage on EMC
> SAN(Symmetrix) for Data disk group and about 3TB for FRA (On Clarrion) for
> the DSS database. We - DBAs & SA - are pondering on LUN size for the disk
> groups. [10203 DB on Unbreakable Linux]
>
> Your experience, input if you can share is very much appreciated.
>
> Thanks,
> Shiva
>
>

-- 
Best Regards,
K Gopalakrishnan
Co-Author: Oracle Wait Interface, Oracle Press 2004
http://www.amazon.com/exec/obidos/tg/detail/-/007222729X/

Author: Oracle Database 10g RAC Handbook, Oracle Press 2006
http://www.amazon.com/gp/product/007146509X/
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Received on Wed Sep 26 2007 - 16:36:44 CDT