Shared Disk Oracle RAC

Hi
   
  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.
   
   
   
  TIA
  Sanjay

                
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