PowerHA for i APIsPowerHA for i APIsThe PowerHA for i APIs provide product information and the ability to adjust the PowerHA for i product version. A PowerHA version represents the level of IBM PowerHA for i function available on a cluster. It is displayed in the form x.y. For example, version 2.0 is a valid PowerHA version.
Potential PowerHA version represents the version of IBM PowerHA for i installed on a node. The potential PowerHA is the highest PowerHA version the node can currently support. The potential PowerHA version is updated when a new version of IBM PowerHA for i is installed. Current PowerHA version represents the version currently being used for all cluster operations. This is the version of communications between the nodes in the cluster. To take advantage of all available new PowerHA function, every node in the cluster needs to be at the latest potential PowerHA version, and the current PowerHA version must be adjusted to match.
IBM PowerHA for i supports up to a two version difference among nodes. Nodes with a potential PowerHA version of at least equal to the current PowerHA version, but not more than two versions higher than the current PowerHA version, are compatible. For example, if the current PowerHA version is 2.1, nodes with a potential PowerHA version of at least 2.1 and less than 5.0 are compatible.
See High availability technologies for more information about the PowerHA for i product version.
The PowerHA for i APIs include:
Change PowerHA Version (QhaChangeHAVersion) allows you to update the PowerHA version.
List PowerHA Information (QhaListHAInfo) allows you to get information about the PowerHA environment for all nodes.Retrieve PowerHA Information (QhaRetrieveHAInfo) allows you to get general information about the PowerHA environment.
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