The evolution of Exchange Server clustering

As Exchange Server has evolved, so has clustering and high-availability. Understanding the differences between each clustering method is important, especially if you're considering an Exchange migration. 

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This tutorial provides an overview of Exchange Server clustering options. You'll learn why five distinct server roles replaced front-end and back-end servers in Exchange 2007 and why database availability groups replaced those roles in Exchange Server 2010.


- Home: Introduction
- Exchange Server 2003 clustering explained
- Clustering options available in Exchange Server 2007
- Rethinking clustering in Exchange Server 2010

Brien M. Posey, MCSE, is a seven-time recipient of Microsoft's Most Valuable Professional (MVP) award for his work with Exchange Server, Windows Server, Internet Information Services (IIS), and File Systems and Storage. Brien has served as CIO for a nationwide chain of hospitals and was once responsible for the Department of Information Management at Fort Knox. You can visit Brien's personal website at www.brienposey.com.

This was first published in June 2010

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