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What does AlwaysOn mean in SQL Server 2012?
AlwaysOn Clustering AlwaysOn Availability Groups Failover unit Entire instance Groups of databases Shared storage required Yes No Automatic failover Yes Yes Query and back up from secondaries No Yes AlwaysOn Availability Groups
Who is Brent Ozar in SQL Server 2012?
Real-Life SQL Server 2012: AlwaysOn Lessons Learned Real-Life SQL Server 2012: AlwaysOn Lessons Learned Brent Ozar: MCM, MVP, Consultant, BrentOzar.com Jason Hall: Manager, Systems Consulting, Dell SQL Server 2012 AlwaysOn Availability Groups: Real-Life Lessons Learned
How many replicas can be synchronous in AlwaysOn?
AlwaysOn Availability Groups Built atop Windows Clustering (but not shared storage) Like database mirroring, 1 primary server for writes Up to 4 more replicas for reads, backups, HA, DR Up to 3 of those replicas can be synchronous Any 2 of the synch replicas can do automatic failover Replicas can be in di・erent cities, di・erent hardware
What are the drawbacks of SQL Server 2012?
Built atop Windows Clustering (but not shared storage) Like database mirroring, 1 primary server for writes Up to 4 more replicas for reads, backups, HA, DR Up to 3 of those replicas can be synchronous Any 2 of the synch replicas can do automatic failover Replicas can be in di・erent cities, di・erent hardware A.G. Drawbacks
Which is the best practice for SQL Server?
Solutions on Azure with Virtual Machines for SQL Server. Best Practice option: Always On Availability Groups with SQL Enterprise. Backups should also be done and quickly available. The edition of SQL Server matters.
Which is the best AlwaysOn monitoring solution for DBAs?
To meet these demands, DBAs can reach for native, built-in monitoring solutions by using the AlwaysOn dashboard in SQL Server Management Studio, T-SQL scripts for direct querying of the AlwaysOn dedicated DMVs or using Performance Monitor.
Is the AlwaysOn Availability Group A failover target?
What’s more, with AlwaysOn the failover is possible for a single database, a group of databases or for the entire SQL Server instance. In addition, the AlwaysOn availability group allows the user to create more than one failover target and to have full control of the failover process.