Enhanced Support Facility 2.6 User's Guide

1.2.4 Shutting Down and Booting the System

The system executes the shutdown process just like an operator in case of a system failure, a manipulation of the Auto Power Control System, or the occurrence of other potential events. If a UPS (Uninterruptible Power Supply) is connected, the system can also execute the shutdown process if a power down occurs.

Whether the system will normally power on after a power down, depends on the following conditions:

• The power to the system is cut according to the shutdown instruction of the operator (executing shutdown -i5), the settings in the Auto Power Control System, or shutdown due to system failure.
• Following a power down, when power is restored, the system will automatically power on. But this will not occur if a system failure occurred during the shutdown process.
• Normally, the system reboots after the shutdown according to the reboot instruction (executing shutdown -i6) of the operator. If a power down or a system failure occurs during the shutdown process, the power to the system is cut off without a reboot occurring.