[ale] Anyone doing Oracle RAC on Linux?

[Jeff Lightner]

Thanks again.

I'd found a couple of links after sending the email this morning that
led me to that conclusion though they seemed to talk more about IBM than
Sun.

A couple of links that might be of use to you that I ran across this
morning:
http://www.tuxyturvy.com/blog/index.php?/archives/42-RHEL4-dm-multipath-
on-root-HOWTO.html#extended

http://www.tuxyturvy.com/blog/index.php?/archives/13-Testing-dm-multipat
h-on-RHEL4-U2-beta.html




-----Original Message-----
From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of
Philip Rodgers
Sent: Friday, October 05, 2007 1:02 PM
To: Atlanta Linux Enthusiasts
Subject: Re: [ale] Anyone doing Oracle RAC on Linux?

yes the RDAC drivers are the multipathing solution from Sun for linux.
 I believe IBM uses it too.

On 10/5/07, Jeff Lightner <jlightner at water.com> wrote:
> 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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-- 
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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