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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)

Electricity

Network

Storage

Load Balancers

Servers

Web Layer

Middleware

Database Layer

Management\Monitoring


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

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