Read this first

Read this section before doing anything else.

Current customers - read before you install
Read the release planning documents before you install 7.2
Required PTFs before you upgrade to IBM i 7.2
PTFs might be required before you upgrade to 7.2
Upgrade planning
Documentation resources important to consult before you upgrade:
IBM i 7.2 requires POWER6 or newer hardware
Tape and optical device types that are not supported on IBM i 7.2
IBM i Installation load source requirements
Load source size increased to 70 GB
Minimum partition memory required for POWER9
Plan for your Operations Console installation or upgrade
The console features matching the connectivity that you plan to use should be specified as part of the order for your new IBM® i or Power® system.
High Availability
High availability considerations
Hardware considerations before upgrading to IBM i 7.2 on Power6