7.2 Oracle Clusterware Storage Space Requirements

Use this information to determine the minimum number of disks and the minimum disk space requirements based on the redundancy type, for installing Oracle Clusterware files, and installing the starter database, for various Oracle Cluster deployments.

Total Storage Space for Database Files Required by Redundancy Type

The following tables list the space requirements for Oracle RAC Database data files for multitenant and non-CDB deployments.

Table 7-1 Oracle ASM Disk Space Requirements for a Multitenant Container Database (CDB) with One Pluggable Database (PDB)

Redundancy Level	Minimum number of disks	Data Files	Recovery Files	Both File Types
External	1	4.5 GB	12.9 GB	17.4 GB
Normal	2	8.6 GB	25.8 GB	34.4 GB
High	3	12.9 GB	38.7 GB	51.6 GB
Flex	3	12.9 GB	38.7 GB	51.6 GB

Table 7-2 Oracle ASM Disk Space Requirements for Oracle Database (non-CDB)

Redundancy Level	Minimum number of disks	Data Files	Recovery Files	Both File Types
External	1	2.7 GB	7.8 GB	10.5 GB
Normal	2	5.2 GB	15.6 GB	20.8 GB
High	3	7.8 GB	23.4 GB	31.2 GB
Flex	3	7.8 GB	23.4 GB	31.2 GB

Total Oracle Clusterware Available Storage Space Required by Oracle Cluster Deployment Type

If you create a disk group as part of the installation to install the OCR and voting files, then the installer requires that you create these files on a disk group with at least 2 GB of available space.

Based on the cluster configuration you want to install, the Oracle Clusterware space requirements vary for different redundancy levels. The following table lists the available storage space requirements for external redundancy level for each cluster configuration:

Table 7-3 Minimum Available Space Requirements for Oracle Standalone Cluster

Redundancy Level	DATA Disk Group	MGMT Disk Group	Rapid Home Provisioning	Total Storage
External	1 GB	28 GB Each node beyond four: 5 GB	1 GB	30 GB
Normal	2 GB	56 GB Each node beyond four: 5 GB	2 GB	60 GB
High/Flex/Extended	3 GB	84 GB Each node beyond four: 5 GB	3 GB	90 GB