Re: OCR / VD external vs. normal redundancy using NFS.

CFS and NFS is indeed supported

--
LSC


On Thu, Jul 1, 2010 at 8:02 AM, D'Hooge Freek <Freek.DHooge_at_uptime.be>wrote:



> Cheng,

>

> This is not entirely true.

> When setting up a new rac, raw or block devices are no longer supported for

> the voting disks or the cluster registry, but it does not mean that you

> can't use a different cluster filesystem then ASM to hold them.

> It is perfectly valid to use NFS as clustered filesystem (except when you

> use standard edition rac)

>

> Also when you upgrade an existing environment, it is still possible to keep

> your voting disks and/or cluster registry on raw/block devices.

>

>

> Regards,

>

>

> Freek D'Hooge

> Uptime

> Oracle Database Administrator

> email: freek.dhooge_at_uptime.be

> tel +32(0)3 451 23 82

> http://www.uptime.be

> disclaimer: www.uptime.be/disclaimer

> ________________________________________

> From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org]

> On Behalf Of LS Cheng

> Sent: donderdag 1 juli 2010 7:41

> To: david.robillard_at_gmail.com

> Cc: oracle-l mailing list

> Subject: Re: OCR / VD external vs. normal redundancy using NFS.

>

> Hi

>

> In 11gR2 Grid Infrastructure you have to store OCR and Voting Disk inside

> ASM Disk Groups. There is no other storage option which you can use during

> installation.

>

> The only exception is when you are upgrading 10g to 11gR2

>

> Thanks

>

> --

> LSC

> On Wed, Jun 16, 2010 at 4:43 PM, David Robillard <

> david.robillard_at_gmail.com> wrote:

> Hello everyone,

>

> I'd like to know how does each of us configure redundancy for both the

> Grid Infrastructure's Oracle Cluster Registry (OCR) and Voting disks

> (VD) when they're stored over NFSv3 on an enterprise grade storage

> array with RAID disks. Do you use external or normal redundancy for

> OCR and VD?

>

> I'm looking to install Grid Infrastructure 11gR2 on RedHat Enterprise

> Linux 5 x86_64 over NFSv3 on a clustered Sun/Oracle Unified Storage

> 7410. The storage array has built-in redundancy on every components.

> Each cluster node has two quad-ethernet network interface cards (NIC).

> All network interfaces are built with two ports, one on each NIC, to

> create a private (bond0), public (bond1) and storage (bond2)

> interface. There are two redundant GbE switches dedicated for a

> storage-only non-routable subnet.

>

> Quick note, I'm not using ASM over iSCSI for various reasons. Mostly

> because every paper I read from NetApp/Sun/Oracle/EMC says the

> performance of ASM with software initiator iSCSI is not as good as

> NFS. Also because it's easier to manage the storage array's total disk

> space when using NFS instead of iSCSI. I'm also not using Oracle's

> dNFS feature simply because I haven't had the time to look at it and

> I've been working with NFS for over 10 years. Plus I'm also lucky (?)

> enough to be the UNIX sysadmin, the storage array administrator and

> the DBA, so I don't need to configure everything from the Oracle

> stand-point (i.e. I can't do finger pointing in case things go wrong,

> I'm the only one to blame).

>

> With that in mind, which option would you choose and why?

>

> Option A)

>

> Create an NFS share for OCR and another one for VD then use external

> redundancy. That would generate the following mount points:

>

> OCR = /u01/ocr/cluster.registry

> VD = /u01/vd/voting.disk

>

> -or-

>

> Option B)

>

> Create three different NFS shares for OCR and three other shares for

> VD then use normal redundancy. That would create the following mount

> points:

>

> OCR 1 = /u01/ocr/ocr1/cluster.registry

> OCR 2 = /u02/ocr/ocr2/cluster.registry

> OCR 3 = /u03/ocr/ocr3/cluster.registry

> VD 1 = /u01/vd/vd1/voting.disk

> VD 2 = /u02/vd/vd2/voting.disk

> VD 3 = /u03/vd/vd3/voting.disk

>

> Of course there are other options and variations. I welcome all

> comments and critics on that setup :)

>

> Many thanks,

>

> David

> --

> David Robillard, UNIX team leader and Oracle DBA

> CISSP, RHCE, SCSA & SCSECA

> --

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

>

>

>


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