IBM pSeries 670 Service Manual page 763

powered on when ac loss occurred, it reboots/restarts when power is restored. If the system was
powered off when ac loss occurred, it remains off when power is restored.
v Timed power-on - refer to the shutdown -t command on servers using AIX.
Working in conjunction with AIX, the Service Processor in your server can operate a timer, much like the
wake-up timer on your clock radio. You can set the timer so that your server powers on at a certain time
after shutting down. The timer is battery-operated, so power interruptions that occur while the server is
off do not affect its accuracy. Refer to the AIX shutdown -t command for details on setting the timer.
Note: If an ac power loss (exceeding the hold-up time of any optional IBFs) is in progress when the
timed power-on attempt occurs, the server cannot power on when ac power is restored.
v Follow-up to a Failed Boot Attempt
The service processor initiates a power-on sequence if a failed boot attempt is detected (due to a
hardware or software failure).
v Fast or Slow Boot (IPL)
Using the service processor menus, you can select the IPL type, mode, and speed of your system.
Attention: Selecting fast IPL results in several diagnostic tests being skipped and a shorter memory
test being run.
Chapter 7. Using the Service Processor
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