Fortigate HA upgrade with VDOM partitioning
Does anyone have experience with upgrade of two Fortigate in HA Active/Passive mode with VDOM partitioning when there are two or more vclusters and despite Active/Passive mode on hardware firewalls, some VDOMs are Active on one firewall and some are Active on another. So, in fact, it`s working as Active-Active. Such topology is called "virtual clustering with two VDOMs and VDOM partitioning"
I`m thinking on procedure with uninterruptible-upgrade but my concern is how Fortigate cluster will behave itself in this case.
For Active/Passive deployment uninterruptible-upgrade first occurs on subordinate unit, however, i my case it will be active for some VDOMs. Will cluster correctly perform failover of all VDOMs to the primary node prior to start upgrade the subordinate node and vice versa when subordinate unit is upgraded and started?