IBM 7918, User Manual

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Rear view
The following illustration shows the connector on the rear of the 2U chassis.
2U chassis
Power supply cage
Power supply
Connector
Power-cord connector: Connect the power cord to this connector. When the
chassis is installed in an iDataPlex rack, it is automatically connected to power
through a power cord that is mounted to the rack rail.
System-board tray power features
When the system-board tray is connected to an ac power source but is not turned
on, the operating system does not run, and all core logic except for the integrated
management module II (IMM2) is shut down; however, the system-board tray can
respond to requests from IMM2, such as a remote request to turn on the
system-board tray. The power-on LED flashes to indicate that the system-board tray
is connected to an ac power source but is not turned on.
Turning on the system-board tray
Approximately 5 seconds after you install the system-board tray in a chassis, the
system-board tray is connected to power and the power-on button LED will blink
quickly. Approximately 20 to 40 seconds after the system-board tray is connected to
power, the power-control button becomes active (the power-on LED will blink
slowly). You can turn on the system-board tray by pressing the power-control
button.
The system-board tray can also be turned on in any of the following ways:
v
If a power failure occurs while the system-board tray is turned on, the
system-board tray will restart automatically when power is restored.
v In an IPMI environment, the system administrator can turn on the system-board
tray by using the IPMI
chassis control command.
v
If your operating system supports the Wake on LAN feature, the Wake on LAN
feature can turn on the system-board tray.
Notes:
1. When 4 GB or more of memory (physical or logical) is installed, some memory
is reserved for various system resources and is unavailable to the operating
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System x iDataPlex dx360 M4 Types 7918 and 7919: User’s Guide