RE: Shared Disk Oracle RAC

  • From: "Bryan Thomas" <bthomas@xxxxxxxxxxxxxx>
  • To: <smishra_97@xxxxxxxxx>, <oracle-l@xxxxxxxxxxxxx>
  • Date: Thu, 14 Sep 2006 15:48:55 -0500



It simply is a matter of putting both servers in one EMC Storage Group.  You
will need to create a storage group with both servers and the LUN's hat must
be shared.


If you are using switches, you must make sure they are zoned properly too.



Here is a link to a Dell area that specifically covers the requirements for
Oracle RAC on EMC.






From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]
On Behalf Of Sanjay Mishra
Sent: Thursday, September 14, 2006 2:44 PM
To: oracle-l@xxxxxxxxxxxxx
Subject: Shared Disk Oracle RAC




I am working on Installing Oracle Clusterware software so that we can
replace the Veritas Clusters which is used for three applications. In the
current setup of Veritas Clusters, One of the Server is ACTIVE and so all
Disk are mounted on Active  server. So if it failed to Offline server, all
Veritas Resource like Disk as well Oracle instance are mounted and started
on second server and it become active. Anyway this is the existing approach.


Now I had to install Oracle clusterware which need shared storage to create
OCR/Voting files and our Sysadmin has provided a QA environment where two
Linuz server are present and they are attached the HBA to the Shared EMC
storage. Storage is avaialble only on one server and one sysadmin says that
it is not possible to provide the shared storage on both server so that both
can write to each other. One of them says that it is possible but this is
some EMC configuration and so it has to go to EMC support. I am not sysadmin
and so can somebody give me some idea so that I can check with them.
Sysadmin says that if we stop the one of the server, then the space will be
automatically visible on other server but not the same time. Is there way I
can tell them to check some information in the configuration.








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