You can use the following storage management schemes for the Oracle RAC database:
Solaris Volume Manager for Sun Cluster
Veritas Volume Manager (VxVM) with the cluster feature
VxVM is supported only on the SPARC platform.
Hardware redundant array of independent disks (RAID) support
Sun StorageTek QFS shared file system with hardware RAID support or with Solaris Volume Manager for Sun Cluster
Qualified network-attached storage (NAS) devices
Oracle Automatic Storage Management (ASM)