If a physical SCSI disk or LUN is exported as a full disk, the corresponding virtual disk supports the user SCSI command interface, uscsi and multihost disk control operations mhd. Other virtual disks, such as virtual disks having a file or a volume as a back end, do not support these interfaces.
As a consequence, applications or product features using SCSI commands (such as Solaris Volume Manager metaset or Oracle Solaris Cluster shared devices) can be used in guest domains only with virtual disks having a physical SCSI disk as a back end.