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:

  1. Continue from step 11 in the previous sub-section (see Creating Spaces).
  2. Click the Next button to create groups. The Setup a Cluster Group dialog is shown.
  3. Click the New... button to create a new cluster group. The Create New Cluster Group dialog box appears.
  4. Type the name of the group in the Group Name field.
  5. 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.
    You must select at least one policy type for a cluster group; you may select more than one.
  6. In the Group Members Configuration area, the Cluster Members box lists all the spaces in the cluster.
  7. To add spaces to this group, select the spaces in the Cluster Members box and click
  8. The spaces you added are displayed in the Group Members list.
    You must add at least two spaces for the group's policy to be meaningful.
  9. 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.

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