This is not likely a firmware issue. If you notice such behavior, you should open a support ticket with Fortanix support (support@fortanix.com) for further investigation.
Fortanix Data Security Manager (DSM) > Getting Started with Fortanix DSM > Setting Up Fortanix DSM - System Administration (on-prem only) > Deployment > On-premises > Hardware Guide > Fortanix FX2200 Series II
Fortanix Data Security Manager (DSM) > Getting Started with Fortanix DSM > Setting Up Fortanix DSM - System Administration (on-prem only) > Cluster Configuration and Management > Monitoring and Alerting