Summary: How to define cluster groups, add spaces to the group and define the relationships between the spaces using policies.
Overview The second discrete step in creating a cluster is to define cluster groups, add spaces to the group and define the relationships between the spaces using policies. To create groups:
- Continue from step 11 in the previous sub-section (see Creating Spaces).
- Click the Next button to create groups. The Setup a Cluster Group dialog is shown.
- Click the New... button to create a new cluster group. The Create New Cluster Group dialog box appears.
- Type the name of the group in the Group Name field.
- From the Cluster Options area, select the policies you wish to define for this group. The Replication, LoadBalancing, and Fail Over check-boxes determine which relationships are maintained amongst the spaces in this group. When you select a check-box, the corresponding policy tab is enabled in the bottom portion of the dialog box.
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You must select at least one policy type for a cluster group; you may select more than one. |
- In the Group Members Configuration area, the Cluster Members box lists all the spaces in the cluster.
- To add spaces to this group, select the spaces in the Cluster Members box and click

- The spaces you added are displayed in the Group Members list.
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You must add at least two spaces for the group's policy to be meaningful. |
- Define a replication policy, a load-balancing policy, or a failover policy for your group.
You should not associate a space to two groups with the same policy type. For example, the same space should not be part of two replication groups. This can cause severe system instability. |