Which of these is not recommended as the basis for an ASM disk in a shared storage configuration?

Which of these is not recommended as the basis for an ASM disk in a shared storage
configuration?

A.
Raw disk partition

B.
NFS file

C.
Raw logical volumes

D.
iSCSI targets

Explanation:
* Block or raw devices are not supported by Oracle Universal Installer (OUI) or
Database Configuration Assistant (DBCA). However, manually configured raw or block devices
are supported by Oracle, but not recommended.
* Shared disk access requires some sort of networked storage
– iSCSI (not D)
– Fibre Channel/SCSI
– NFS (not B)
* A logical volume is supported in less complicated configurations where a logical volume is
mapped to a LUN, or a logical volume uses disks or raw partitions.