We have a cluster with 3 nodes, we currently have the following HA (High Availability) mirror policy as shown below:
Delving deeper and with a bit more understanding I can see that specifying ha-params as 2 will mean that a total of 2 nodes will be mirrored, so one of the nodes wont be! It's no the same as the all one, as that would mirror to all nodes, which would make more sense to me currently.