PowerHA & Cluster Version Compatibility

This chart shows the IBM i and PowerHA release compatibility information. The current PowerHA version can be determined by using the DSPCLUINF command or the QHASM.CLUSTER_INFO SQL service.

Release Support Status

Supported Release

Extended Support

End of program support

Cross-Release Version Compatibility

While the PowerHA version typically matches the IBM i version, later PowerHA versions are capable of running with an N-2 release level. For example, a node with a potential version of 5.x can be in a cluster with a node with a potential version of 3.x. This enables easy and systematic upgrades in a PowerHA environment, rather than needing to upgrade all nodes at once.

The PowerHA modification level (second digit) of the version, changes with program temporary fixes (PTFs) or PTF groups. Once a cluster is at a particular modification level, new fixes and functionality is enabled that may cause data conversions. Therefore, in a mixed-release environment, certain PTFs may be required for the nodes to be at a compatible level. The following tables show this compatibility.

PowerHA 7.5

PowerHA 7.5 has a potential PowerHA version of 5.x. A PowerHA 7.5 node requires a minimum PowerHA version of 3.x and a maximum PowerHA version of 5.x.

PowerHA 7.5 in a 5.x Cluster

Current PowerHA Version of Cluster ↓

Potential PowerHA Version (7.5 Node)

5.5.x

5.4.x

5.3.x

5.2.x

5.1.x

5.0.x

5.5.x

5.4.x

5.3.x

5.2.x

5.1.x

5.0.x

PowerHA 7.5 in a 4.x Cluster

Current PowerHA Version of Cluster ↓

Potential PowerHA Version (7.5 Node)

5.5.x

5.4.x

5.3.x

5.2.x

5.1.x

5.0.x

4.11.x

4.10.x

4.9.x

4.8.x

4.7.x

4.6.x

4.5.x

4.4.x

4.3.x

4.2.x

4.1.x

4.0.x

PowerHA 7.5 in a 3.x Cluster

Current PowerHA Version of Cluster ↓

Potential PowerHA Version (7.5 Node)

5.5.x

5.4.x

5.3.x

5.2.x

5.1.x

5.0.x

3.11

3.10

3.9

3.8

3.7

3.6

3.5

3.4

3.3

3.2

3.1

3.0

PowerHA 7.4

PowerHA 7.4 has a potential PowerHA version of 4.x. A PowerHA 7.4 node requires a minimum PowerHA version of 2.x and a maximum PowerHA version of 4.x.

PowerHA 7.4 in a 4.x Cluster

Current PowerHA Version of Cluster ↓

Potential PowerHA Version (7.4 Node)

4.11.x

4.10.x

4.9.x

4.8.x

4.7.x

4.6.x

4.5.x

4.4.x

4.3.x

4.2.x

4.1.x

4.0.x

4.11.x

4.10.x

4.9.x

4.8.x

4.7.x

4.6.x

4.5.x

4.4.x

4.3.x

4.2.x

4.1.x

4.0.x

PowerHA 7.4 in a 3.x Cluster

Current PowerHA Version of Cluster ↓

Potential PowerHA Version (7.4 Node)

4.11.x

4.10.x

4.9.x

4.8.x

4.7.x

4.6.x

4.5.x

4.4.x

4.3.x

4.2.x

4.1.x

4.0.x

3.11

3.10

3.9

3.8

3.7

3.6

3.5

3.4

3.3

3.2

3.1

3.0

PowerHA 7.4 in a 2.x Cluster

Current PowerHA Version of Cluster ↓

Potential PowerHA Version (7.4 Node)

4.11.x

4.10.x

4.9.x

4.8.x

4.7.x