The attached guide provides instructions for migrating the Oracle RAC database from Oracle Automatic Storage Management(ASM) to Veritas Cluster File System(CFS).
ASM is a vertically integrated file system and volume manager, purpose-built for Oracle database files. It is consistent across all server and storage platforms.
CFS enables you to mount the same file system on multiple nodes simultaneously and is an extension of the industry-standard Veritas File System. CFS is a true SANfile system. All the data traffic takes place over the storage area network(SAN), and only the metadata traverses the cluster interconnects.