Migration Information › Running CA MIM in Mixed-Level Mode

Running CA MIM in Mixed-Level Mode

You can run CA MIM r11.8 concurrently with CA MIM r11.7 on different systems in the same MIMplex.

If you want to run this release of CA MIM in mixed-level mode, you need to upgrade all systems to this release as quickly as possible to avoid any error conditions. This upgrade should take place over a period of days or weeks, not months.

CA MIM is a multi-system product. While you can run CA MIM at different levels on each system, we recommend that you not do so long-term. The cross-system communication architectures employed and the global functionality of each CA MIM component makes it impractical to run CA MIM tasks at different control logic levels in the same MIMplex.

For example, CTC IO recovery logic applied to one of five systems provides no benefit to the global MIMplex CTC recovery process. The same is true for global component functions provided by CA MIA, CA MIC, and CA MII.

It is possible that if you use CA MIM address spaces at different levels in their MIMplex for an extended time, you will eventually experience problems specific to mixed-level mode operations. Therefore, we recommend that you run CA MIM at the current release on all systems as quickly as possible.