After a network issue, two availability groups vanished from SSMS. Here is how the logs explained an availability group missing or deleted automatically.
SQL SERVER – FIX: Error 19456: None of the IP Addresses Configured for the Availability Group Listener can be Hosted by the Server
Deploying a hybrid AlwaysOn availability group across on-premises and Azure, adding a replica failed with error 19456. Here is what fixed it.
SQL SERVER – Unable to Bring SQL Cluster Resource Online – Online Pending and then Failed
A SQL Cluster Resource started from services.msc but sat in Online Pending and then failed in Failover Cluster Manager. Here is how I tracked down the cause.
SQL SERVER – Planned and Unplanned Availability Group Failovers – Notes from the Field #031
In Notes from the Field #031, John Sterrett explains Planned and Unplanned Availability Group failovers in AlwaysOn, a topic that confuses many DBAs.
SQL SERVER – Get High Availability with SQL Server 2012
SQL Server 2012 offers several High Availability options, including up to four active secondaries. Here is what they give you and how a course can help.