IBM pSeries 690 Service Manual page 374

The following table outlines the IPL phases from power-on to the operating system login prompt, matching
the phases to corresponding operator-panel checkpoints for a typical partition boot. Also listed are the
approximate boot times for each phase, along with their dependencies for each phase.
Note: The following table lists the major checkpoints only.
Phase # Checkpoints on Operator
Panel or HMC
Phase 1 8xxx => OK
Phase 2 9xxx => 91FF
Phase 3 Exxx => E105
Phase 4 0xxx or 2xxx => blank
354 Eserver pSeries 690 Service Guide
Time in Phase Major Contributors to Time in Phase
(minutes)
Approx. 1
3 to 6 Number of I/O drawers
1 to 3 Number of bootable adapters
2 to 30+ Number of SSA drives
Number of SCSI drives
Number of async sessions
Number of processors
Number of adapters
Amount of memory