Guidelines for replacing faulty SSR nodes onboarded to MIST which are part of Cluster/HA.
In case where one of the node in the cluster is faulty and needs replacement, follow the standard RMA workflow as below.
WAN Edge --> Utilities --> Replace WAN edge
In case both the nodes in the cluster are faulty and needs replacement., get 2 new nodes and follow the workflow to build a new HA formation
You can follow the steps as documentation below
https://www.mist.com/documentation/high-availability-ssr/
Kindly monitor and ensure the HA links between the nodes are operational and connected. Any failure in HA links and connectivity will impact the cluster formation.
Kindly engage JTAC for proactive support as needed.