I have a 2-node Windows Cluster and File Share Witness with an availability group. The cluster is set to sync and auto failover. I'm using SQL 2014 and Windows 2012R2. I'm trying to understand the steps to apply Windows Updates that require a restart. Are the steps something like this where ServerA is the primary replica and ServerB is the secondary replica.Apply updates to ServerB.Restart ServerB.Fail ServerA availability group to ServerB using ALTER AVAILABILITY GROUP MyAvailGroup FAILOVER;. Server B is now the primary. Apply updates to ServerA.Restart ServerA.Fail ServerB availability group to ServerA using ALTER AVAILABILITY GROUP MyAvailGroup FAILOVER;. Server A is now the primary. What I don't understand is where Drain Roles on the Failover Cluster Manager fits in?
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