How to mount LUNs created in NAS server on RHEL 6.5

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I have a NAS storage where i am creating 4 LUNs. i need to mount these 4 LUNs in 4 RHEL servers so that all LUNs are visible in order to create Oracle RAC cluster with these 4 RHEL servers.

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Does your NAS present iSCSI LUNs?
http://www.oracle.com/technetwork/articles/hunter-rac11gr2-iscsi-088677.html

If not, I believe Oracle RAC on NFS is a supported configuration also:
oracle-base.com/articles/11g/oracle-db-11gr2-rac-installation-on-linux-using-nfs.php