IBM 6C4, 6.00E+04 manual System Power-On Methods

System Power-On Methods

This section discusses the following system power-on methods:

vPower-on Switch

vService Processor Menus

Privileged users can power on the system by selecting the System Control Power Menu option from the main menu and then selecting the Power-on System option from the System Power Control Menu. General users should select Power-on System on the General User Menu.

vRemote Power-on via Ring-Indicate Signal

The system automatically powers on when it detects a ″ring indicate″ signal from a modem attached to serial port 1 (S1) or serial port 2 (S2).

A remote user can call the system to activate ring detection by the modem. Listen for a few more rings than the threshold number for starting the system. The system powers on without answering the call.

vUnattended start mode - refer to Enable/Disable Unattended Start Mode on page 40.

The service processor can be enabled to recover from the loss of ac power (see Enable/Disable Unattended Power-On Mode in the SYSTEM POWER CONTROL MENU). When ac power is restored, the system returns to the power state at the time ac loss occurred. For example, if the system was 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.

vTimed power-on - refer to the shutdown -tcommand on servers using AIX.

Working in conjunction with AIX, the service processor in your system can operate a timer, much like the wake-up timer on your clock radio. You can set the timer so that your system powers on at a certain time after shutting down. The timer is battery-operated, so power interruptions that occur while the system is off do not affect its accuracy. Refer to the AIX shutdown -tcommand for details on setting the timer.

Note: If an ac power loss is in progress when the timed power-on attempt occurs, the system cannot power on when ac power is restored.

vFollow-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).

vFast 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.

58pSeries 630 Model 6C4 and Model 6E4 User's Guide