Take a look at this solution  emc106122
Is SCSI-3 reservation supported on the CLARIION CX4-960 array.  We are trying to install SQL SERVER Cluster 2008, we are seeing errors:  Cluster Disk 0 does not support Persistent Reservations. Some storage devices require specific firmware versions or settings to function properly with failover clusters. Please contact your storage administrator or storage vendor to check the configuration of the storage to allow it to function properly with failover clusters.
SCSI-3 reservation supported on the CLARIION CX4-960