System-Level Fault Tolerance (Clustering/Network Load Balancing) - Cluster Group Failover Configuration

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To create a failover and failback process, the cluster group failover configuration needs to be set up properly. Follow these steps to configure cluster group failover:

1. Click Start, Administrative Tools, Cluster Administrator.

2. When the Cluster Administrator opens, choose Open Connection to Cluster and type the name of the cluster in the Cluster Name text box. Click OK to continue. If the local machine is part of the cluster, enter . (period) as the cluster name, and the program will connect to the cluster running on the local machine.

3. Right-click the appropriate cluster group and select Properties.

4. Select the Failover tab and set the maximum number of failovers allowed during a predefined period of time. When the number of failovers is exceeded within the Period interval, shown as a threshold of 10 in Figure 31.9, Cluster Service will change the group to a failed state.

   
   
   Figure 31.9 Setting failover thresholds for the cluster group.

5. Click Next and then Finish to complete the failover configuration.

6. Select File, Close to exit Cluster Administrator.

Cluster Group Failback Configuration

The cluster group failback process involves making configuration changes in the Cluster Administrator utility. Follow these steps to configure cluster group failback:

1. Click Start, Administrative Tools, Cluster Administrator.

2. When Cluster Administrator opens, choose Open Connection to Cluster and type the name of the cluster in the Cluster Name text box. Click OK to continue.

3. Right-click the appropriate cluster resource group and select Properties.

4. On the General tab, click the Modify button to select the preferred owners. Double-click the node or nodes you prefer the cluster group to run on and click OK to return to the cluster group's General tab.

5. Select the Failback tab, choose the Allow Failback radio button, and set time options for allowing failback.

6. Click Next and then Finish to complete the failback configuration.

7. Select File, Close to exit Cluster Administrator.

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Note - To reduce the chance of having a group failing back to a node during regular business hours after a failure, configure the failback schedule to allow failback only during nonpeak times or after hours using settings similar to those made in Figure 31.10.

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This chapter is from Microsoft Windows Server 2003 Unleashed, by Rand Morimoto, et al. (Sams Publishing, 2004, ISBN: 0672326671). Check it out at your favorite bookstore today. Buy this book now.

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