Preparing the system for IBM i software upgrade or replacement

To prepare the system for software installation, review and perform the preparation tasks that pertain to your system.

Reviewing software PTF (fix) requirements
Before you begin the IBM® i installation process, make sure that your system is ready by reviewing your requirements for program temporary fixes (PTFs).
Working with critical system values before you install software
System values are IBM-supplied objects that can be modified from their shipped value to tailor certain aspects of the IBM i operating system to your environment. The software installation program will overlay these objects on your system with values that are supplied on the installation media.
Verifying the integrity of user-modified system objects
When you replace your software with the new IBM i release, the system keeps changes you made to some IBM-supplied objects.
Ensuring two-phase commit integrity
Complete or cancel all pending resynchronizations of commitment control definitions before you replace your IBM i software.
Minimizing software installation time
These actions can minimize the time required to install your IBM i software.
Gathering performance data for benchmark
Establish system benchmarks before you install a new version of the IBM i operating system or make a major system configuration change such as adding a new software application.

Parent topic: Preparing to upgrade or replace IBM i software