Software requirements for clusters

In order to use clustering, you must have the correct software and licenses.

1. Latest supported release of IBM® i operating system installed.
2. TCP/IP Connectivity Utilities feature installed.
3. If you plan to use data resiliency technologies, there are additional requirements.
4. Option 41 (High Availability Switchable Resources) is required if you plan to use the following interfaces:
   • IBM PowerHA® SystemMirror® for i licensed program.
5. You can also use IBM Business Partner product or write your own high availability management application by using Cluster APIs.