EMC Avamar 6.0 for Exchange Guide - EMC Community Network

Standalone and high-availability deploymentsImportant terms and conceptsINTRODUCTIONMicrosoft Exchange Server can be deployed in various configurations.The simplest configuration is a single Windows network host running MicrosoftExchange Server. This will be referred to as a “standalone” configuration in theremainder of this publication.However, most larger enterprises typically deploy Microsoft Exchange Server insome “high-availability” configuration. This typically involves the use of Windowsclusters, Exchange Server 2007 replication, or both.Windows clustersWindows clusters comprise at least two servers (SERVER-A and SERVER-B) andsome amount of shared external storage.For purposes of our discussion, it is crucial to understand that Windows clustersare not application specific. A Windows cluster can host any windows application,including Microsoft Exchange.Exchange Server 2007 replicationBeginning with Microsoft Exchange Server 2007, Microsoft has built datareplication features directly into Exchange. These features allow Exchange data tobe replicated from one Exchange server to another.Exchange Server 2007 offers three levels of data replication:• Local Continuous Replication (LCR)• Cluster Continuous Replication (CCR)• Standby Continuous Replication (SCR)EMC AVAMAR 6.0 FOR EXCHANGE GUIDE 9