Introduction

Windows Server 2003

The ELM Server Cluster Installation Guide provides information for installation of an ELM Server in a  Windows 2003 Cluster Server. Clustering the ELM Server provides essential redundancy and guaranteed availability.

The ELM Server includes a cluster-aware resource DLL (EEMCLR.dll), enabling you to cluster an ELM Server on Windows Server 2003.

The ELM Server can be clustered in an Active/Passive configuration only, where the ELM Server runs only on one node at a given time. If you are installing the ELM Server on a node in a cluster then you must cluster the ELM Server. The only way to instantiate (start) an ELM Server that has been installed on a node in a Windows cluster is to add the ELM Server as a clustered resource. Therefore, install the ELM Server component only in a Windows 2003 cluster, and only when you intend to use the instructions below to cluster the ELM Server.

There are specific configurations that must be used when installing the ELM Server in a cluster:

•The ELM Server requires the following dependency items in its cluster resource group: Disk Resource, IP Address Resource, and Network Name Resource.

•The ELM Server binaries and other files must be installed onto the Disk Resource (disk in shared storage).

•The ELM Server resource must be configured to use the Network Name Resource as the server name.

•If the ELM Server's database is also a resource in the ELM Server's resource group, you should make the ELM Server resource dependent on the database resource.

•When an ELM Console is connected to an ELM Server in a cluster, and that ELM Server fails over to another node, the ELM Console will disconnect from the ELM Server, but by design will not automatically reconnect once the ELM Server is instantiated on the other node. You will need to manually reconnect to the ELM Server from within the ELM Console.

Windows Server 2008 and Windows Server 2008 R2

Configuring your clustered environment to support the ELM Server is much easier on Windows Server 2008 and Windows Server 2008 R2 through the use of automatic configurations in the Generic Service option.  Before actually creating the clustered service, the environment is required to be setup correctly. Please ensure that Shared Storage accessible by the nodes that the ELM Server will be installed on has been configured.