Each FIM and FPM installed in a FortiGate-7121F includes a Trusted Platform Module (TPM).
You need to enter the following command to enable TPM support and input the primary-encryption-password once from the primary FIM. You don't need to enter the command separately for each FIM and FPM and you do not need a separate primary-encryption-password for each FIM and FPM.
config system global
set private-data-encryption enable
For information about FortiOS TPM support as well as configuration and diagnose commands, see Trusted platform module support.