An Oracle representative should have set up Database Domain clusters as part of their installation and configuration process. However, when you set up zones on the Database Domains and you set up new clusters with those zones as members, if you want to create clusters that will share the Exadata Storage Servers, the Exadata Storage Servers will have to be repartitioned. That action erases the clusters that were set up at your initial installation.
Consider these items when planning the Exadata Storage Server disk group layout. For example, how many clusters are you setting up? How many Exadata Storage Servers are available? What level of redundancy do you want for the Exadata Storage Servers for these clusters?
If three Exadata Storage Servers are available for every cluster with zones on the Database Domains, and you are using normal redundancy, then you do not have to share Exadata Storage Servers across each cluster, and the Exadata Storage Servers do not have to be repartitioned. For high redundancy, five Exadata Storage Servers should be available for every cluster with zones on the Database Domains.
For example, assume you have a Half Rack, which has four Exadata Storage Servers. You are creating one cluster with zones on the Database Domains and you are using normal redundancy, then you would not have to share Exadata Storage Servers.
Likewise, assume you have a Full Rack (with eight Exadata Storage Servers) and an Oracle Exadata Storage Expansion Full Rack connected to your Oracle SuperCluster T5-8 (with 18 Exadata Storage Servers). You are creating eight clusters with zones on the Database Domains and you are using normal redundancy, then you would have three Exadata Storage Servers for every cluster that you are creating. You would not have to share Exadata Storage Servers across the clusters.
If fewer than three Exadata Storage Servers are available for every cluster with zones on the Database Domains using normal redundancy, or fewer than five Exadata Storage Servers for every cluster if you are using high redundancy, then you must share Exadata Storage Servers across each cluster.
The following topics provide more detail on the process for planning the Exadata Storage Server layout, and an example scenario that describes how certain decisions are made based on an example situations and values.