Viewing power information – HP Integrated Lights-Out 4 User Manual
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server increases the fan speed and initiates a graceful operating system shutdown. This
ensures both data integrity and system safety.
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Critical—If temperatures are uncontrollable or rise quickly, the critical temperature threshold
prevents system failure by physically shutting down the system before the high temperature
causes an electronic component failure.
Viewing power information
iLO monitors the power supplies in the server to ensure the longest available uptime of the server
and operating system. Power supplies might be affected by brownouts and other electrical
conditions, or AC cords might be unplugged accidentally. These conditions result in a loss of
redundancy if redundant power supplies are configured, or result in a loss of operation if redundant
power supplies are not in use. If a power supply failure is detected (hardware failure) or the AC
power cord is disconnected, events are recorded in the IML and LED indicators are used.
If the server is powered off, the system health information on this page is current as of the last
power off. Health information is updated only when the server is powered on and POST is complete.
The iLO processor is an essential component of the HP Power Discovery Services infrastructure.
The iLO processor communicates with the HP Intelligent Power Distribution Unit (iPDU) attached to
each HP Platinum Plus Power Supply to determine rack and data center power redundancy. When
the iLO processor is part of the HP Power Discovery Services infrastructure, it will intelligently report
external server input power redundancy status and individual (internal) power supply status.
For more information about HP power supply options, see the following website:
.
To view power information, navigate to the Information
→System Information page, and then click
the Power tab, as shown in
Figure 77 System Information – Power Information page
Viewing iLO system information
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