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 8-1 Oracle ASM Disk Space Minimum Requirements for Oracle Database
| 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 8-2 Oracle ASM Disk Space Minimum 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
During installation of an Oracle Standalone Cluster, if you create the MGMT disk group for Grid Infrastructure Management Repository (GIMR), then the installer requires that you use a disk group with at least 35 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 8-3 Minimum Space Requirements for Oracle Domain Services Cluster with Four or Fewer Oracle Member Clusters
| 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
|
MGMT Disk Group Space Required for Additional Services, If Selected
|
Total Storage |
|---|---|---|---|---|---|
| Two nodes, 4 MB Allocation Unit (AU), one Oracle ASM disk | External | 1.4 GB | 188 GB |
RHP: 100 GB PDB for each Oracle Member Cluster beyond four: 35 GB |
189.4 GB for an Oracle Domain Services Cluster with four Oracle Member Clusters |
| Two nodes, 4 MB Allocation Unit (AU), three Oracle ASM disks | Normal | 2.5 GB | 376 GB |
RHP: 200 GB PDB for each Oracle Member Cluster beyond four: 70 GB |
378.5 GB for an Oracle Domain Services Cluster with four Oracle Member Clusters |
| Two nodes, 4 MB Allocation Unit (AU), five Oracle ASM disks | High | 3.6 GB | 564 GB |
RHP: 300 GB PDB for each Oracle Member Cluster beyond four: 105 GB |
567.6 GB for an Oracle Domain Services Cluster with four Oracle Member Clusters |
| Two nodes, 4 MB Allocation Unit (AU), three Oracle ASM disks | Flex | 2.5 GB | 376 GB |
RHP: 200 GB PDB for each Oracle Member Cluster beyond four: 70 GB |
378.5 GB for an Oracle Domain Services Cluster with four Oracle Member Clusters |
The storage space calculations assume an Oracle Domain Services Cluster configuration with four Oracle Member Clusters and two nodes. The Rapid Home Provisioning (RHP) size is 100 GB.
Table 8-4 Minimum Space Requirements for Oracle Member Cluster
| Cluster Configuration | OCR | Voting Files | Additional Storage Requirements | Total Storage |
|---|---|---|---|---|
| Oracle Member Clusters with remote Oracle ASM configuration | 1.4 GB | 300 MB | None, since Oracle Member Cluster uses the remote GIMR and other services from the Oracle Domain Services Cluster | 1.7 GB |
| Oracle Member Clusters with local Oracle ASM configuration. | Same as the requirements for Oracle Standalone Cluster for each redundancy level. | Same as the requirements for Oracle Standalone Cluster for each redundancy level. | Same as the requirements for Oracle Standalone Cluster for each redundancy level. | Same as the requirements for Oracle Standalone Cluster for each redundancy level. |
Table 8-5 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 |