Re: CRS and Voting Disk Storage Options -- Oracle 10gR2 RAC on Sun Sparc
- From: hrishy <hrishys@xxxxxxxxxxx>
- To: LS Cheng <exriscer@xxxxxxxxx>, Oracle-l FreelistsList <oracle-l@xxxxxxxxxxxxx>, k.sriramkumar@xxxxxxxxx
- Date: Tue, 30 Jun 2009 10:49:51 +0000 (GMT)
Hi Sriram
You are correct.
You can use raw devices for datafiles in RAC.Infact OPS the predecssor of teh
modern day RAC was primarily using RAW devices.
Howevr there are many limitations to raw devices that is why oracle first came
out with ocfs and then ASM which offer raw like performance minus the overhead
of managing them.
I udnerstand that Oracle12g would not support raw devices a warning for you if
you intend to gow down that route with your RAC implementation
regards
Hrishy
--- On Tue, 30/6/09, Sriram Kumar <k.sriramkumar@xxxxxxxxx> wrote:
From: Sriram Kumar <k.sriramkumar@xxxxxxxxx>
Subject: Re: CRS and Voting Disk Storage Options -- Oracle 10gR2 RAC on Sun
Sparc
To: "LS Cheng" <exriscer@xxxxxxxxx>, "List, Oracle-l Freelists"
<oracle-l@xxxxxxxxxxxxx>
Date: Tuesday, 30 June, 2009, 11:20 AM
Hi,
One more question. if the data synchronization for OCR is managed with shared
raw volume and without a cluster volume manager, then the same logic of
synchronization should work for Oracle datafiles as well right?i.e..if you
create datafiles on raw volumes without cluster volume manager or without ASM
that should also work right?.
Best Regards
Sriram Kumar
On Tue, Jun 30, 2009 at 3:18 PM, LS Cheng <exriscer@xxxxxxxxx> wrote:
Hi
Raw Devices can be shared, you dont need any Cluster Volume Manager to do so.
Thanks
--
LSC
On Tue, Jun 30, 2009 at 11:46 AM, Sriram Kumar <k.sriramkumar@xxxxxxxxx> wrote:
Hi Cheng,
Thanks for the reply. how is the OCR and voting disk information synchronized
if it is not shared?. Pls help me understand
Best regards
Sriram Kumar
On Tue, Jun 30, 2009 at 2:59 PM, LS Cheng <exriscer@xxxxxxxxx> wrote:
Hi
You store OCR and Voting Disks on RAW Devices. You dont need any third party
cluster for this
Thanks
--
LSC
On Tue, Jun 30, 2009 at 11:18 AM, Sriram Kumar <k.sriramkumar@xxxxxxxxx> wrote:
Hi Folks,
We are planning to implement a Sun SPARC based 10g R2 cluster.
I see from the oracle link
http://www.oracle.com/technology/products/database/clustering/certify/tech_generic_unix_new.html
That following storage options
1) Solaris Volume Manager for Sun Cluster
2) VERITAS Volume Manager (VxVM) with the cluster feature
3) Sun StorEdge QFS shared file system with hardware RAID support or with
Solaris Volume Manager for Sun Cluster
4) Network Appliance network-attached storage (NAS) devices
5) Oracle Automatic Storage Management (ASM)
We are looking at ASM but if we choose ASM then how will the Voting Disk and
CRS would be managed? Do we still need Sun Cluster for managing this alone or
how do you manage it?. Thanks in advance
Best Regards
Sriram Kumar
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