There are several types of IPL:
- Cold Start
- Any IPL that loads (or reloads) the PLPA, but does not preserve
VIO data set pages. The first IPL after system installation is always
a cold start because the PLPA is initially loaded. Subsequent IPLs
are cold starts when the PLPA is reloaded either to alter its contents
or to restore its contents if they were destroyed.
- Quick Start
- Any IPL that does not reload the PLPA and does
not preserve VIO data set pages. (The system resets the page and segment
tables to match the last-created PLPA.)
- Warm Start
- Any IPL that does not reload the PLPA, but does
preserve journaled VIO data set pages.