2. DBI-B314

15. SS PP PP SS VM Witness Failure detection for SQL Server Failover takes ~10s

16. TechnologySQL Server VersionZero Data LossScope# ReplicasAutomatic Failover Readable Secondaries Availability GroupsSQL Server 2012 SQL Server 2014 Yes (Sync Mode) DB(s)4949 Yes (w/ additional cluster member) Yes Database MirroringSQL Server 2008 R2 SQL Server 2012 SQL Server 2014 Yes (High Safety Mode) DB1Yes (w/ Witness) Limited (database snapshots)

19. Gotcha Azure’s DHCP assigns a dup IP to the cluster network name (CNN) Can cause cluster communication issues Workaround Temporarily assign a link-local IP (e.g. 169.254.1.1) to CNN during creation Use the CreateAzureFailoverCluster script DownloadDownload

25. TechnologySQL Server VersionZero Data LossScope# ReplicasAutomatic Failover Readable Secondaries Availability GroupsSQL Server 2012 SQL Server 2014 Yes* (Sync Mode) DB(s)4949 Yes** (w/ additional cluster member) Yes Log ShippingSQL Server 2008 R2 SQL Server 2012 SQL Server 2014 NoDB1NoLimited (standby state) * Most customers use Async Mode (High Performance) to avoid impacting primary performance **Async Mode only supports Force Failover to make DR (potential data loss) a conscious decision

26. Tutorial: http://msdn.microsoft.com/en-us/library/azure/dn690122.aspxhttp://msdn.microsoft.com/en-us/library/azure/dn690122.aspx Secure site-to-site tunnel between Azure VPN gateways

32. TechnologySQL Server VersionZero Data LossScope# ReplicasAutomatic Failover Readable Secondaries Availability GroupsSQL Server 2012 SQL Server 2014 Yes* (Sync Mode) DB(s)4949 Yes** (w/ additional cluster member) Yes Log ShippingSQL Server 2008 R2 SQL Server 2012 SQL Server 2014 NoDB1NoLimited (standby state) * Most customers use Async Mode (High Performance) to avoid impacting primary performance **Async Mode only supports Force Failover to make DR (potential data loss) a conscious decision

35. Tutorial: http://msdn.microsoft.com/en-us/library/dn636917.aspxhttp://msdn.microsoft.com/en-us/library/dn636917.aspx

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