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	Total Storage
External	1	4.5 GB	12.9 GB	17.4 GB
Normal	2	8.6 GB	25.8 GB	34.4 GB
High/Flex/Extended	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	Total Storage
External	1	2.7 GB	7.8 GB	10.5 GB
Normal	2	5.2 GB	15.6 GB	20.8 GB
High/Flex/Extended	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 space requirements for each cluster configuration and redundancy level.

Note:

The DATA disk group stores OCR and voting files, and the MGMT disk group stores GIMR and Oracle Clusterware backup files.

Table 8-3 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

• Oracle recommends that you use separate disk groups for Oracle Clusterware files and for GIMR and Oracle Clusterware backup files.

• 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.

• 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

Redundancy Level	DATA Disk Group	Oracle Clusterware Backup Files	Total Storage
External	1 GB	4 GB	5 GB
Normal	2 GB	8 GB	10 GB
High/Flex/Extended	3 GB	12 GB	15 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

Redundancy Level	DATA Disk Group	MGMT Disk Group	Trace File Analyzer	Total Storage	Additional Oracle Member Cluster
External	1 GB and 1 GB for each Oracle Member Cluster	140 GB	200 GB	345 GB (excluding RHP)	RHP: 100 GB GIMR for each Oracle Member Cluster beyond four: 28 GB
Normal	2 GB and 2 GB for each Oracle Member Cluster	280 GB	400 GB	690 GB (excluding RHP)	RHP: 200 GB GIMR for each Oracle Member Cluster beyond four: 56 GB
High/Flex/Extended	3 GB and 3 GB for each Oracle Member Cluster	420 GB	600 GB	1035 GB (excluding RHP)	RHP: 300 GB GIMR for each Oracle Member Cluster beyond four: 84 GB

• By default, the initial space allocation for the GIMR is for the Oracle Domain Services Cluster and four or fewer Oracle Member Clusters. You must add additional storage space for each Oracle Member Cluster beyond four.

• 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.

• 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.