How to add a FleXi module to an existing HA pair without Turn off both firewalls

Question

Hi all, 
 
 Is there a possibility to install a Flexi port module to an existing HA Pair without switching off both firewalls at the same time ?

Vivek Jagad · Answer

Hello GilbertAtorf , Thank you for reaching out to the community, without switch off it's not possible. 
 To add a FleXi port module to an existing HA pair, do as follows: 
 
 Turn off both firewalls. 
 Install the FleXi port modules in both firewalls. You must use the same model of FleXi port module in both firewalls. 
 Turn on both firewalls. 
 Go to Network > Interfaces and assign an IP address to the FleXi port. Synchronization takes place, and the FleXi port of the auxiliary firewall is assigned the same IP address. 
 Click Save to allow traffic flow.