SQL Server system redundancy and high availability

25 February,2011 by Jack Vamvas

There are considerable design considerations for  designing redundancy into a SQL Server database system for high availability(HA).

 The extent to which redundancy is built into a system will depend on : expertise, cost,resources, service level agreements (SLA)

 General areas in considering the HA stack.Consider all these categories - ensuring every element is documented . One of the most resource intensive aspects of maintaining a high availability environment is the managing and monitoring of the system once it's designed and deployed

Physical locations (buildings,geography,server rooms zones)




Load Balancers


Web Layer


Database Layer


Author: Jack Vamvas (http://www.sqlserver-dba.com)


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