This is a nice video by Brent Ozar on AlwaysOn Availability Groups: Real-Life Lessons Learned.
In this video, Brent explains what is ‘AlwaysOn’, AlwaysOn Availability Groups and the way that they work. AlwaysOn Failover Clustering is exactly the same as the Failover clustering but AlwaysOn Availability Groups is different – requires SQL 2012 Enterprise.
Brent talks about issues with hotfixes and keeping on top of them and real life Microsoft support issues.
Lessons learned on Windows Setup, Quorum Backups and Monitoring.