SQL Server High Availability options in a step-by-step manner A guide to SQL Server High Availability for DBA aspirants, proficient developers and system administrators Learn the pre and post installation concepts and common issues you come across while working on SQL Server High Availability Tips to enhance performance with SQL Server High Availability External references for further study In Detail Every business has it's mission critical applications and data. Therefore, it is very important to keep database servers up and running all the time - 24 X 7. There is a need to store and process terabytes of data to cater for business needs, and it is vital to make data highly available. High availability is all about the site being accessible all the time. High availability solutions minimize the downtime for these mission critical applications. Microsoft SQL Server is a powerful relational database engine, widely used to store and maintain data in Enterprises of various levels be they small, medium or large.