SFW support for dynamic quorum resource
Storage Foundation (SFW) allows Failover Cluster to use dynamic disks as clustered dynamic disk group resources. This lets you make your Failover Cluster quorum highly available using host-based mirroring.
Veritas recommends the following:
Use at least three disks for a clustered dynamic disk group resource because a cluster disk resource cannot be brought online unless a majority of disks are available.
In case of Cluster Volume Manager (CVM) clusters, use physical disks for configuring a quorum.