Prerequisites for performing an OS upgrade on either system - assure_mimix - 10.0

Before you start an upgrade of the IBM i operating system on either system, do the following:

1. Access Support information from Support as you perform the following steps to ensure that the system is ready to upgrade:

   1. Check the compatibility of the operating systems on the production and backup systems, ensuring the systems will meet the requirements of a MIMIX-supported environment once the IBM i operating system upgrade has occurred.

   2. Ensure the recommended IBM IBM i PTFs have been applied according to your IBM i version.

   3. Ensure the recommended MIMIX service packs have been applied according to your MIMIX version. Review the Read Me document that corresponds to the MIMIX service pack, and check the website for relevant Technical Alerts and FAQs.

2. Review your startup procedures to understand how your environment is configured to start after an IPL. This startup program is defined in the QSTRUPPGM system value. An IBM i upgrade may include rebuilding access paths, converting formats, or performing other operations that must be complete before MIMIX or other applications are started. The upgrade may not complete successfully if your QSTRUPPGM procedures start MIMIX or other applications during an IPL. Ensure that these processes are disabled before continuing with the IBM i upgrade.