The high availability fire drill detects discrepancies between the VCS configuration and the underlying infrastructure on a node; discrepancies that might prevent a service group from going online on a specific node.
For Mount resources, the high availability drill performs the following, it:
Checks if the specified mount point directory exists
Checks if the mount point directory is already used
Checks for valid Veritas File System (VxFS) licenses
Checks if the mount point exists in the /etc/fstab file
For more information about using the high availability fire drill, see the Cluster Server Administrator's Guide.