PowerHA SystemMirror components configuration limits
PowerHA® SystemMirror® has limits for components and settings. For example, you can have up to 16 nodes in a cluster.
The following table displays the PowerHA SystemMirror components and their corresponding
maximum values.
| Component | Maximum limits for the configuration |
|---|---|
| Nodes in a cluster | 16 |
| Resources available in a resource group | 512 |
| Backup repository disks in a cluster | 6 |
| Resource groups in a cluster | 256 |
| Number of networks in a cluster | 48 |
| Cluster IP addresses | 256 |
| Application servers in a resource group | 512 |
| Application monitors in a resource group | 512 |
| Service IP labels in a resource group | 256 |
| Interfaces per node per network | 7 |
| Persistent IP addresses per network per node | 1 |
| Volume groups in a resource group | 512 |
| File systems in a resource group | 512 |
| Cluster name length | 63 characters |
| Node name length | 64 characters |
| Network interface name length | 64 characters |
| Service IP name length | 63 characters |
| Persistent IP name length | 64 characters |
| Resource group name length | 64 characters |
| Application server name length | 64 characters |
| Application monitor name length | 64 characters |
Notes:
- In PowerHA SystemMirror, you can configure upto 256 cluster IP addresses, which includes boot IP addresses, persistent IP addresses, and service IP addresses.
- You can configure up to 256 service IP labels in a resource group. However, the actual number of service IP labels that you can configure will be less than 256 depending upon number of cluster IP labels which includes boot IP addresses and persistent IP addresses configured to the cluster.