The high availability fire drill detects discrepancies between the VCS configuration and the underlying infrastructure on a node. These discrepancies might prevent a service group from going online on a specific node. For Application resources, the high availability fire drill checks for:
The availability of the specified program and execution permissions for the specified program (program.vfd)
The existence of the specified user on the host (user.vfd)
The existence of the same binary on all nodes (cksum.vfd)
For more information, refer to the Cluster Server Administrator's Guide.