SQL As A Service Proof of Concept with SQL 2012 and vRealize Automation

Standing up a redundant/highly available database infrastructure can be one of the more complicated pieces of work.  Doing it by hand is a long process with any points where errors could happen.  It was with this in mind that I decided to use this as my first “project” with vRealize Automation.

A Brief History of SQL Server High Availability

When discussing redundancy or high availability (HA) for databases, there’s two distinct outcomes – firstly to ensure the continued delivery of the service in the event of infrastructure failure (the actual HA part) and secondly to ensure the data is kept in an orderly fashion (data integrity, no loss of data, etc).  Where these two activities happen depend on the technology used.

In older versions of SQL Server, these outcomes were achieved using SQL Clustering.  In SQL Clustering, the HA function was achieved at the server level by having 2 or more servers, while data integrity was maintained by the database residing on shared storage.

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