RE: Shared Disk Oracle RAC

  • From: Sanjay Mishra <smishra_97@xxxxxxxxx>
  • To: bthomas@xxxxxxxxxxxxxx, oracle-l@xxxxxxxxxxxxx
  • Date: Thu, 14 Sep 2006 14:23:09 -0700 (PDT)

  Thanks for the Link. My configuration is exactly like it where both Dell 
server are attached to the EMC through Fiber Channel. Each Dell server has two 
HBA [ Second for failover]. I check the docuement refer by Site and can see all 
partition on Server 1 but it is not visible on Server 2 in /proc/partitions
  If we shutdown the server 1, then all partition are visible on Server2 as per 
Sysadmin. I didn't check it byt sysadmin says that it is because of EMC 
  Any other side that shoudl be check or suggestion

Bryan Thomas <bthomas@xxxxxxxxxxxxxx> wrote:
        v\:* {behavior:url(#default#VML);}  o\:* {behavior:url(#default#VML);}  
w\:* {behavior:url(#default#VML);}  .shape {behavior:url(#default#VML);}        
st1\:*{behavior:url(#default#ieooui) }                Sanjay,
  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 
  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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