Install Exchange 2003 on a Cluster

Install Exchange 2003 on a Cluster Consulting Services

After planning your cluster deployment strategy, proper deployment of that cluster ensures high availability of your servers running Microsoft Exchange Server 2003. Although deploying Exchange in a cluster is similar to deploying Exchange in a non-clustered organization, there are important differences you must consider. Installing an Exchange 2003 cluster requires that you install each of the cluster nodes and Exchange Virtual Servers to Exchange 2003. Avidware provides the procedures necessary to deploy Exchange 2003 Clusters on Windows Server 2003. 

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Installing Exchange 2003 on a Cluster Overview

A cluster is a group of nodes working together as single systems, to ensure high availability of applications. We are dealing with Exchange Server 2003, and the cluster should ensure higher availability than on a stand-alone server. Now the key thing to keep in mind here is that this is primarily hardware redundancy and not data redundancy; there is no data replication. That would all depend on the physical hardware such as disk arrays. As you see here, we have two cluster nodes standing by the pink computers, and in between we have two shared disks, and those are your physical disks.   

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Exchange Clustering Summary

In clustering with Exchange, we have two different types of clustering (slide 7). We have Active/Active and Active/Passive. First, Active/Passive by definition is when you have fewer Exchange Virtual Servers than the total number of nodes in the cluster. So if you have a two-node cluster and you have one Exchange Virtual Server, you're in an Active/Passive configuration. Anything above two nodes, up to eight with Windows Server™ 2003, you'll be forced into an Active/Passive configuration, meaning you will have one passive node at all times unless the node fails. Active/Passive is the Microsoft recommendation for performance reasons, which we will address in a moment.

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