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 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 tables list the space requirements for each cluster configuration.
Table 7-3 Minimum Space Requirements for Oracle Standalone Cluster
| Cluster Configuration | Redundancy Level | Space Required for DATA Disk Group containing Oracle Clusterware Files (OCR and Voting Files)
|
Space Required for MGMT Disk Group containing the GIMR and Oracle Clusterware Backup Files
|
Total Storage |
|---|---|---|---|---|
| Two nodes, 4 MB Allocation Unit (AU), one Oracle ASM disks | External | 1.4 GB | At least 37.6 GB for a cluster with 4 nodes or less. Additional 4.7 GB space required for clusters with 5 or more nodes. | 39 GB |
| Two nodes, 4 MB Allocation Unit (AU), three Oracle ASM disks | Normal | 2.5 GB | 75.5 GB | 78 GB |
| Two nodes, 4 MB Allocation Unit (AU), five Oracle ASM disks | High | 3.6 GB | 113.4 GB | 117 GB |
| Two nodes, 4 MB Allocation Unit (AU), three Oracle ASM disks | Flex | 2.5 GB | 75.5 GB | 78 GB |
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