Availability groups or failover cluster instances protect different SQL Server boundaries; compare data copies, shared storage, failover, and cost.
MultiSubnetFailover: Why Clients Time Out After an AG Failover
Diagnose an AG failover timeout with listener DNS, MultiSubnetFailover, RegisterAllProvidersIP, HostRecordTTL, and client-driver checks.
Testing a Failover Before You Need One
Testing a failover reveals connection, data, job, and recovery gaps before an outage; learn to plan a SQL Server drill and record the result.
Scheduling Patch Windows Without Surprises
Scheduling Patch Windows requires realistic restart time, failover steps, job coordination, backup checks, and clear stop rules.
Monitoring Availability Group Health
Monitor availability group health through replica connection state, database synchronization, send and redo queues, and failover readiness checks.
Patching an Availability Group in the Right Order
Patching an Availability Group safely means updating secondaries first, checking synchronization, failing over, and updating the old primary.
Naming SQL Server Instances So People Understand Them
Naming SQL Server Instances well clarifies default and named installs, survives growth, and makes later server renames less painful.