A closer look at everything related to SQL Server

Today, I explained to my internal IT team and a DBA on another team about the advantages of using AG for Disaster Recovery scenario. They had lot of questions and I prepared myself with these documents. I drew the scenario on my board and took the picture of it. I modified the presentation I got from one of the SQL Saturdays I attended. I downloaded Word document on this topic from MSDN site.

SQLServerAlwaysOn

Building a High Availability and Disaster Recovery Solution using AlwaysOn Availability Groups

 

AG_HA_DR

 

I think people are hesitant to change because they do not want to come out of their comfort zone and\or not knowing enough about the new technology makes them less confident. They like to stick to Log Shipping because it works. Another uncertainty was about geo-clustering or AG on different subnet for DR. Here I also lack knowledge so I pointed out this would be a good oppurtunity for all of us to learn and we will have one more option for DR in case log shipping feature is not available in future SQL Server releases. Then there was bad experience that the team had several years ago with Failover Clustering. It used to take time for SQL Server services to come up. I know I have lot to do to change the mindset but so little time. In the end, I got the agreement that we will create one DR box in the second data center where I will do the log shipping and also will include it in my current Availability group configuration. Let us see how it goes.

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