Unable to create Windows 2008 Failover Cluster

Hi,

I have SAN storage disk mapped to 2 host servers and i have 2 vm's running in each host servers.

am trying to configure Windows failover cluster in the VM's.So i mapped the SAN disk to VM's via SCSI hard disk as pass through disk and ran the Fail over validation wizard.The failover validation throw error ""Disk bus type does not support clustering. Disk partition style is MBR. Disk partition type is BASIC".

Is SCSI disk not supported?.