The Traffic Light In Your Datacenter

How This One Simple Yet Very Important Concept Helped Me Understand What Windows Server Failover Clustering Is All About

You know how it feels like to stare at this for a very long time (I ended up having to wear eyeglasses because of it.) Better yet, try it. Just for 5 minutes straight without blinking. But staring at a computer monitor for a long time isn’t the real issue. It’s the confusion of trying to […]

Resources: Windows Server Failover Clustering (WSFC) for SQL Server DBAs

Last week at Live360, I have had the opportunity to deliver my workshop on Windows Server Failover Clustering (WSFC) for SQL Server DBAs. The workshop was based on an online course that I am about to re-release. One of the things I like about delivering presentations is that I learn a lot from the attendees […]

The S.P.A. That Prevents Your Synchronous SQL Server Always On Availability Groups From Failing Over Automatically

This is a very common question that gets asked on the technical forums, newsgroups, social media, etc. when it comes to synchronous SQL Server Always On Availability Groups (AG): “Why did my AG not automatically failover?” Notice that I mentioned SYNCHRONOUS and not asynchronous. Only when Always On Availability Group replica databases are configured for synchronous commit […]

Why We Need To Understand How Active Directory Affects SQL Server High Availability

But I’ll tell you what hermits realize. If you go off into a far, far forest and get very quiet, you’ll come to understand that you’re connected with everything. – Alan Watts – WARNING: There will be a ton of acronyms in this blog post. Make sure to keep your notebook handy for note-taking reference. […]