In general, follow this process to determine how to lay out your zones and clusters across the Exadata Storage Servers, where each decision point at the top of the process affects decisions made lower in the decision tree.
Determine the amount of existing usable disk space. How many Exadata Storage Servers are available for the clusters that you are creating? How much total usable disk space is available for those clusters?
Determine the number of clusters that you want for the zones that you are creating on the Database Domains. This, in conjunction with the total amount of existing usable disk space, is used to determine the maximum amount of space that will be available for each cluster.
Determine the amount of space to assign to each of the three disk groups in each cluster.
DATA
RECO
DBFS
Also determine the names to use for the disk groups for each cluster. For example, if you are creating disk groups for two clusters (scm7r1 and (scm7r2), then you might use these names for the three disk groups for each cluster:
First cluster (scm7r1):
- DATA_scm7r1
- RECO_scm7r1
- DBFS_scm7r1
Second cluster (scm7r2):
- DATA_scm7r2
- RECO_scm7r2
- DBFS_scm7r2
Record your Exadata Storage Server disk group layout in the worksheet in Recording Your Exadata Storage Server Disk Group Layout.
The following topics provide more detailed information on each of these decisions points.