Identify requirements for all of the data services before you begin Oracle Solaris OS and Oracle Solaris Cluster installation. Failure to do so might result in installation errors that require that you completely reinstall the Oracle Solaris OS and Oracle Solaris Cluster software.
For example, the Oracle Data Guard option of Oracle Solaris Cluster Support for Oracle Real Application Clusters has special requirements for the hostnames that you use in the cluster. HA for SAP also has special requirements. You must accommodate these requirements before you install Oracle Solaris Cluster software because you cannot change hostnames after you install Oracle Solaris Cluster software.