Can I Downgrade FMCv300 to FMCv2/10/25

[Freemen]

I am migrating FMC from FMC2500 hardware to virtual, based on the migration path, i must use FMCv300, but it requires 64GB RAM

what i am thinking is can I after migrate to v300, then i downgrade the RAM to 32GB since i not managing 300 sensor

is that possible?

Cisco Secure Firewall Management Center Model Migration Guide - About Secure Firewall Management Center Model Migration [Cisco Secure Firewall Management Center] - Cisco

Cisco Secure Firewall Management Center (formerly Firepower Management Center) Data Sheet - Cisco

[Pulkit Mittal]

I don't see any problem with that, however, recommended is 64 GB. I suggest only downgrade post migration to be on the safer side and don't forget to take a backup.

Please mark this helpful if you are happy with the response, and accept the solution.

[Marvin Rhoads · Accepted solution]

Build the new FMC using the proper sizing for the FMCv license you own. That includes the proper compute, memory and disk resources. Then temporarily change the model using configure-model-sh (run as root user). Use the migration tool to completion and then change the model back to the original correct version.

[Ruben Cocheno]

@Freemen 

You can use this script as root from the FMC expert cli:

/var/sf/etc/model-info/configure-model.sh