• At least 12 GB of space for the Oracle Grid Infrastructure for a cluster home (Grid home). Oracle recommends that you allocate 100 GB to allow additional space for patches.
  At least 9 GB for Oracle Database Enterprise Edition

• Allocate additional storage space as per your cluster configuration, as described in Oracle Clusterware Storage Space Requirements.

During installation, based on the cluster configuration, you are asked to provide Oracle ASM storage paths for the Oracle Clusterware files. These path locations must be writable by the Oracle Grid Infrastructure installation owner (Grid user). These locations must be shared across all nodes of the cluster on Oracle ASM because the files in the Oracle ASM disk group created during installation must be available to all cluster member nodes.

• For Oracle Standalone Cluster deployment, shared storage, either Oracle ASM or shared file system, is locally mounted on each of the cluster nodes.

• For Oracle Domain Services Cluster deployment, Oracle ASM storage is shared across all nodes, and is available to Oracle Member Clusters.
  
  Oracle Member Cluster for Oracle Databases can either use storage services from the Oracle Domain Services Cluster or local Oracle ASM storage shared across all the nodes.
  
  Oracle Member Cluster for Applications always use storage services from the Oracle Domain Services Cluster.
  
  Before installing Oracle Member Cluster, create a Member Cluster Manifest file that specifies the storage details.

Voting files are files that Oracle Clusterware uses to verify cluster node membership and status. Oracle Cluster Registry files (OCR) contain cluster and database configuration information for Oracle Clusterware.

Depending on the type of cluster you are installing, you can choose to either host the Grid Infrastructure Management Repository (GIMR) for a cluster on the same cluster or on a remote cluster.

For Oracle Standalone Cluster deployment, you can specify the same or separate Oracle ASM disk group for the GIMR.

For Oracle Domain Services Cluster deployment, the GIMR must be configured on a separate Oracle ASM disk group.

Oracle Member Clusters use the remote GIMR of the Oracle Domain Services Cluster. You must specify the GIMR details when you create the Member Cluster Manifest file before installation.

To avoid data corruption, ensure that encryption of Oracle ACFS file systems is removed before installation.