If you are deploying the SFDB tools with SF Cluster File System HA (single instance Oracle) your setup configuration will reflect the following conditions:
A highly available parallel cluster with a single instance of Oracle is set up on system1 and system2 with SF Cluster File System HA.
The datafiles are mounted and shared on system1 and system2.
The database repository is mounted and shared on system1 and system2.
You must run the SFDB tools commands on system1 where the database is online.
In the figures below the repository directory resides in the Oracle mount points.
While the setup is the similar for SF Cluster File System and SF Cluster File System HA, failover to the backup system is automatic rather than manual for SF Cluster File System HA.