Complete the Define Clusters Page

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Review the information in the Define Clusters page.
The Define Clusters page should show your current configuration. For example, assume you have these clusters as part of your existing configuration, as described in Example Configuration:
- Four clusters that were set up for the Database Domains with zones (four zones within each Database Domain with zones, so four clusters for the zones in the Database Domains with zones)
- One cluster that was set up for the Database Domains (without zones)
Then you should see the following screen:

Where:
- Clusters 1 to 4 should display the clusters that were set up for the Database Domains with zones (four zones within each Database Domain with zones, so four clusters for the zones in the Database Domains with zones)
- Cluster 5 should display the cluster that was set up for the Database Domains (without zones)
For Clusters 1 to 4, the screens for each cluster show the information for the Database Domains with zones that house the zones, not the zones themselves.

In this example configuration, the screens for Clusters 1 to 4 show the following information:
- scm7zadm0101.example.com
- scm7zadm0201.example.com
Those are the Database Domains with zones that house the zones that make up the clusters. Information on the individual zones within each Database Domain with zones appear in a future screen.

Because Cluster 5 is for the two Database Domains (without zones), that screen would show those two Database Domains and not the Database Domains with zones that are shown in Clusters 1 to 4.

In this example configuration, the screen for Cluster 5 shows the following information:
- scm7dbadm0102.example.com
- scm7dbadm0202.example.com
Click on the tab for the last cluster shown in this page and note the cluster name for that cluster.
Using the previous example, click on the tab for Cluster 5 and note that the cluster name is example-scm7-clu5, as shown in the following figure.
Determine the number of zones and clusters that you want to add to the Database Domains with zones.
Using the example configuration outlined in Example Configuration, assume you want to add the following zones and clusters:
- Two additional zones to each Database Domain with zones (4 zones total)
- Two additional clusters, one cluster for each new zone set up on each Database Domain with zones
In the Number of Clusters to create area, increase the number of clusters by the number of new clusters that you want to add.
For example, if you are adding two new clusters, you would increase the number of clusters to seven total clusters:
- Five existing clusters
- Two new clusters

For each cluster, set a unique name for the cluster and select the Exadata Storage Servers that will be part of each cluster.
1. Click on the tab for the first new cluster that you want to add.
  In this example, you would click on Cluster 6. Note that the cluster was automatically named cluster-clu6 in the Cluster Name field, as shown in the following figure.
2. Set a unique name within your organization for the cluster.
  By default, a cluster name of cluster-clunumber will be assigned to the cluster (such as cluster-clu6). You may run into an issue with Enterprise Manager if you have multiple systems with the same default cluster names across the systems, so you must change the default cluster name to a unique name within your organization for the cluster (for example, organization-systemname-clusternumber, such as example-scm7-clu6).
3. Select the Database Domains with zones that house the zones that you want to create and click Add.
  The Database Domains with zones are shown as ZHST in the left pane in the Define Clusters page. The Database Domains with zones that you selected appear in the right pane.
4. Select the Exadata Storage Servers that are part of this cluster and click Add.
  Note - Oracle Support Best Practices dictate that you should assign all Exadata Storage Servers to each cluster rather than split the Exadata Storage Servers between the clusters.
  
  Note - If you are sharing Exadata Storage Servers across clusters, you must first confirm that the Exadata Storage Servers that you are adding to this cluster have enough available space to use for these new zones. See Verify Exadata Storage Server Disk Space for Additional Zones for more information.
  
  The following figure shows an example of a new cluster with all the Exadata Storage Servers assigned to that cluster.
Repeat Step 5 to assign the Exadata Storage Servers to all of the new clusters that you will be creating.
When you have assigned Database Domains with zones and Exadata Storage Servers to all new clusters, click Next.
The Cluster page for the first new cluster is displayed.
Set the zone default configurations for each cluster that you want to create.
Go to Set Zone Default Configurations.