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Configuring BAS on Multiple Computers

To provide failover support for a Business Activity Services (BAS) configuration, configure BAS on multiple computers in a Network Load Balanced (NLB) Web server environment. In this environment, the computers share Windows SharePoint Services content and Trading Partner Manager (TPM) data. BizTalk Server uses the NLB cluster computer name to send messages to BAS to remove any dependency on a particular computer in a multiple Web server environment.

Before configuring BAS on a stand-alone computer, you must configure BizTalk Server (runtime) on another computer. When you configure BAS, BizTalk Server prompts you for the server and database name for the Configuration database.

Choose one computer already installed with Windows Server 2003 and Internet Information Services (IIS) to establish the Web server environment. On this first computer, perform the following steps.

To configure BAS on multiple computers

  1. Configure Windows SharePoint Services and extend it onto a Web site. This creates the Windows SharePoint Services configuration and content databases.
  2. Install and configure BAS, creating the BAS Web site and TPM database.
  3. Create a NLB cluster with this computer as a member. Register the cluster name in the Domain Name System (DNS).

    Important  You must extend Windows SharePoint Services on a virtual server to create a Business Activity Services (BAS) Web site. BAS can function on a computer installed with Microsoft Office SharePoint™ Portal Server 2003, but you must create the BAS Web site on a Windows SharePoint Services site. BizTalk Server does not support a BAS Web site on SharePoint Portal Server.

For each additional Windows SharePoint Services computer in the Web server environment, perform the following steps.

To configure Windows SharePoint Services in the Web server environment

  1. Add the computer to the new NLB cluster.
  2. Configure Windows SharePoint Services by selecting the option to point to an existing Configuration database. Point to the Configuration database created on the first computer. This indicates to Windows SharePoint Services that you intend to have a Web server environment. Extend the Web site by pointing to the existing content database.

    Important  You must extend the same Web site (for example, the default Web site on port 80) on each Windows SharePoint Services computer in the Web server environment. For more information about Windows SharePoint Services Web server environments, see the Windows SharePoint Services Help at http://go.microsoft.com/fwlink/?LinkId=18110.

  3. Install and configure BAS, pointing to the existing BAS Web site and to the existing TPM database.

    Important  For the Uniform Resource Locator (URL) for the BAS site, use the local computer name for the server name. Do not use the cluster name.

On each BAS computer in the Web server environment, update the TPM Web Services web.config files in each of these directories to set the NLB cluster computer name:

  • <drive>:\Program Files\Microsoft BizTalk Server\Business Activity Services\TPM\Management
  • <drive>:\Program Files\Microsoft BizTalk Server\Business Activity Services\TPM\Publishing

In the <appSettings> section, update the following key with the NLB cluster computer name:

  • <add key="InternalPortsRootUrl" value="http://<clusterComputerName>"/>

On each BAS computer in the Web server environment, update the StsHandlers web.config file to reference the TPM Web Services using the cluster computer name:

  • <drive>:\ Program Files\Common Files\Microsoft Shared\Web Server Extensions\60\TEMPLATE\LAYOUTS\1033\BAS

In the <appSettings> section, update the following keys with the TPM Web Services URLs using the NLB cluster computer name:

  • <add key="Microsoft.BizTalk.KwTpm.StsHandlers.TPMgmtWs.TPMgmtWS" value="http://<clusterComputerName>/TPMgmtWS/TPMgmtWS.asmx"/>
  • <add key="Microsoft.BizTalk.KwTpm.StsHandlers.TPPubWs.TPPubWS" value="http://<clusterComputerName>/TPPubWS/TPPubWS.asmx"/>

See Also

Security Recommendations for BizTalk Server Components

To download updated BizTalk Server 2004 Help from www.microsoft.com, go to http://go.microsoft.com/fwlink/?linkid=20616.

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