Mirroring and next active

Hi,

 

In 11.6 (I guess introduced in 11.4) there is separate mirroring per traffic-group. As far as I understand target for mirroring is Next Active Device (NAD) selected for given traffic-group.

 

NAD (especially with Failover Method Load Aware) can change dynamically depending on the state of devices in the cluster. I wonder how it influences mirroring?

 

At given moment TG is mirroring to system selected NAD, but then system recalculates rating and another device is selected as NAD. So whole connection/persistence table has to be re-mirrored to other device? If so what could be impact on cluster/service performance?

 

Or maybe it's working some other way?

 

Piotr