SQL Server HA and DR Options: A Field Guide
Log shipping, replication, mirroring, FCIs, and Availability Groups compared: what each protects, sync vs async, failover, editions, and versions.
Performance Counters Over Time: Making sys.dm_os_performance_counters Tell the Truth
Run this query on any SQL Server and look at the number it gives you for Batch Requests/sec:
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SELECT [counter_name] , [cntr_value] FROM [sys].[dm_os_performance_counters] WHERE [counter_name] = N'Batch Requests/sec'; |
On a server that has been up for a few weeks you will get something like…
Distributed Availability Groups: Architecture, Failover, and the Gotchas Nobody Mentions
A practical guide to SQL Server Distributed Availability Groups, covering architecture, failover mechanics, scripted runbooks, and the FileStream bug that TF 5597 fixes.