Starting with z/OS V1R13 Communications Server, you can use the IBM Configuration Assistant for z/OS Communications Server (Configuration Assistant) to configure multiple z/OS releases. You can configure multiple LPARs that are running different releases by using a single instance of the Configuration Assistant.

To do so, perform the following tasks:

Specify the z/OS release level for images (LPARs):

When you create a new image by using the Configuration Assistant, specify the z/OS release level on the New z/OS Image panel. The default release level is the current release.

Change the z/OS release level for images (LPARs):

To change the z/OS release level for an image by using the Configuration Assistant, click the image name in the navigation tree. Then select the z/OS release level from the drop-down list on the Image Information panel.