[ale] Anyone doing Oracle RAC on Linux?

[Jeff Lightner]

Thanks.  

RDAC is a new term to me.  We're using EMC Clariion CX3-20c array via
fibre (redundant Qlogic 2460 HBAs on the hosts).  We use EMC PowerPath
on the hosts for multipathing.  A quick Google search seems to imply
RDAC relates to doing multipathing.  

I'm wondering if I need to concern myself with RDAC since the emcp
drivers for EMC PowerPath are in use here?   

That is to say is RDAC something one needs for when they don't already
have a multipathing solution like PowerPath or is it something inherent
to the way Linux would treat any disk array (in 2.6 kernels)?

On our older RHEL3 (2.4 kernel) install we had pretty much the same
storage configuration.  Essentially we zone the storage out via two
paths from a CX700 array two redundant Qlogic HBAs on the hosts.   With
EMC PowerPath there I can see four paths for all zoned storage LUNs.

-----Original Message-----
From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of
Philip Rodgers
Sent: Thursday, October 04, 2007 8:42 PM
To: Atlanta Linux Enthusiasts
Subject: Re: [ale] Anyone doing Oracle RAC on Linux?

The array was a StorageTek 2450 the HBA's were qlogic 24xx cards.

On 10/4/07, Jeff Lightner <jlightner at water.com> wrote:
>
>
>
> We currently have Oracle RAC on RHEL3 using OCFS for the datafiles.
There
> is a project underway to do RAC on RHEL5 and we're trying to decide
between
> using ASM and OCFS2.
>
> Is anyone willing to share what they decided if they already did this
on a
> 2.6 kernel based Linux and why they decided it?
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-- 
Philip Rodgers
philipfromga at gmail.com
"We are spending ourselves into oblivion because we can't tax
ourselves into prosperity"  Herman Cain
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