8.1.2 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 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 Available 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 available storage space requirements for external redundancy level for each cluster configuration.
Table 8-3 Minimum Available Space Requirements for Oracle Standalone Cluster
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
|
Rapid Home Provisioning | Total Storage |
|---|---|---|---|
|
1 GB |
28 GB Each node beyond four: 5 GB |
1 GB |
30 GB |
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Oracle recommends that you use separate disk groups for Oracle Clusterware files and for GIMR and Oracle Clusterware backup files.
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The initial GIMR sizing for the Oracle Standalone Cluster is for up to four nodes. You must add additional storage space to the disk group containing the GIMR and Oracle Clusterware backup files for each new node added to the cluster.
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By default, all new Oracle Standalone Cluster deployments are configured with RHP for patching that cluster only. This deployment requires a minimal ACFS file system that is automatically configured in the same disk group as the GIMR.
Table 8-4 Minimum Available Space Requirements for Oracle Member Cluster with Local ASM
Space Required for DATA Disk Group containing Oracle Clusterware Files (OCR and Voting Files)
|
Oracle Clusterware Backup Files | Total Storage |
|---|---|---|
|
1 GB |
4 GB |
5 GB |
-
For Oracle Member Cluster, the storage space for the GIMR is pre-allocated in the centralized GIMR on the Oracle Domain Services Cluster as described in Table 8–5.
-
Oracle recommends that you use separate disk groups for Oracle Clusterware files and for Oracle Clusterware backup files.
Table 8-5 Minimum Available Space Requirements for Oracle Domain Services Cluster with Four or Fewer Oracle Member Clusters
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
|
Trace File Analyzer | Total Storage | Additional Services and GIMR for Additional Oracle Member Clusters (Beyond Initial Deployment) |
|---|---|---|---|---|
|
1 GB and 1 GB for each Oracle Member Cluster |
140 GB |
200 GB |
345 GB for initial Oracle Domain Services Cluster with four Oracle Member Clusters, excluding RHP. Add extra storage space for additional nodes. |
RHP: 100 GB GIMR for each Oracle Member Cluster beyond four: 28 GB |
-
By default, the initial space allocation for the GIMR is for the Oracle Domain Services Cluster and four Oracle Member Clusters. You must add additional storage space for each Oracle Member Cluster beyond four.
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At the time of installation, TFA storage space requirements are evaluated to ensure the growth to the maximum sizing is possible. Only the minimum space is allocated for the ACFS file system, which extends automatically up to the maximum value, as required.
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Oracle recommends that you pre-allocate storage space for largest foreseeable configuration of the Oracle Domain Services Cluster according to the guidelines in the above table.