You need to ensure high availability for the Controller Unit in Cloud Workload Protection for Storage (CWPS).
The Controller Unit (CU) is deployed as part of a auto scaling group which ensures high availability. As there should only be one CU per deployment, this scale group is not configurable during deployment (in contrast to the Protection Unit scale group which you configure during deployment). Post-deployment, it should not be modified unless directed to do so by support.
In the event that the CU enters an unhealthy state, the scale group will destroy the unhealthy instance and replace it with a healthy instance.