The two nodes of a 2012 R2 Cluster lost communication. The System event log showserror 55 with hundreds of entries back to Nov 2019 and a single error 1230 at the time of the outage. I am comfortable with what happened and how we recovered from it. I have been tasked the Root Cause analysis report and it asks 'why' and 'lessons learned' to prevent repeating the failure in the future incidents.
Please advise.