If the server on which the SFCFSHA primary is running fails, the remaining cluster nodes elect a new primary. The new primary reads the intent log of the old primary and completes any metadata updates that were in process at the time of the failure.

If a server on which an SFCFSHA secondary is running fails, the primary reads the intent log of the failed secondary and completes any metadata updates that were in process at the time of the failure.

See When the CFS primary node fails.