F5 Priority Group Activation _ Fallback

Hi All,

I am newbie learning F5 load-balancing. It would like to clarify one of my doubt in Priority Group Activation.

Lets say I have below servers in a pool with Activation Number set to 2.

S1 - 10

S2 - 9

S3 - 8

S4 - 7

> So at first S1 and S2 will be elected for loadbalancing. At failure of S1, S3 will be added into the pool for loadbalancing.

> What is S1 comes back, will any election happen again to include S1 back to pool? If yes, will S3 continue to stay to serve existing active connections, but removed from loadbalacing for new connections?