@AhmedKamal, the WAN IP address of master and slave devices will be same. If you have chance to look on the slave device, all it’s WANs will be in Standby mode without IP address. Once the failover occurs, WANs of slave device will be transition to active and using the same IP address as master device.
Thanks for the helpful answer.
So what about VPN profiles especially those speedfusion profiles created on remote site boxes and points at “remote ID” of one of the HQ boxes?
After adding the second box in HQ and configuring HA, do I have to configure a new profile on the remote site boxes with the new box ID?
No. Slave unit always sync the config from the master automatically.