one virtual server, multiple pools?

The higher the number, the higher the priority, so your priority group 4 will get all the traffic first (so, descending order). Stickiness (persistence) will apply to whatever node is chosen. If that node is marked down, the client will be sent to the next available server in the currently active priority group.

 

 

The Priority Group Activation dropdown box will control when the next priority group is activated. If you set it to "Less than 1" then when all of the nodes in priority group 4 fail, priority group 3 will become active. If you set it to "Less than 2" then it will activate when 3 of the Group 4 nodes fail, etc, etc.

 

 

Denny