Microsoft® SQL Server 2012 Unleashed

The Fundamentals of HA

Every minute of downtime you have today translates into losses that you cannot well afford. You must fully understand how the hardware and software components work together and how, if one component fails, the others will be affected. High availability of an application is a function of all the components together, not just one by itself. Therefore, the best approach for moving into supporting high availability is to work on shoring up the basic foundation components of hardware, backup/recovery, operating system upgrading, ample vendor agreements, sufficient training, extensive quality assurance/testing, rigorous standards and procedures, and some overall risk-mitigating strategies, such as spreading out critical applications ...