Installing Exchange Server 2003 on a Cluster

Exchange Server 2003 Cluster Installation Consulting Services

In clustering with Exchange 2003, we have two different types of clustering. 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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The Benefits of Exchange 2003 Clustering

With Exchange Server 2003, we shifted everything to be dependent on the System Attendant, because in Exchange 2000, before the information store could come offline, we would need to wait for IMAP4, SMTP, HTTP, POP3, and MS Search to all come offline before the information store could come offline. Now by making all of these dependent on the System Attendant, they can all come offline at the same time, and then the System Attendant can come offline gracefully and move over to another node or prepare for maintenance.   

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Installing a New Exchange 2003 Cluster

Installing a brand new Exchange Server 2003 cluster. The first thing that you would obviously need to do is install and configure Windows Cluster service, and we're also going to assume, at this point, that you've already created a group for an Exchange Virtual Server that already contains an IP address, a network name, and any physical disks and mount points that need to be added to this particular group. At that point, you can run Setup.exe on both nodes. You want to make sure not to do this at the same time; do not run it simultaneously.

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