Re: ASM Lun Size

  • From: "K Gopalakrishnan" <kaygopal@xxxxxxxxx>
  • To: shivaswamykr@xxxxxxxxx
  • Date: Wed, 26 Sep 2007 14:36:44 -0700

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@xxxxxxxxx> 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/
--
http://www.freelists.org/webpage/oracle-l


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