
System Power Status
007-6399-002
19
Chassis Management Control (CMC) Functions
The following list summarizes the control and monitoring functions that the CMCs perform. Most
functions are common across multiple blade enclosures:
•
Controls and monitors blade enclosure fan speeds
•
Reads system identification (ID) PROMs
•
Monitors voltage levels and reports failures
•
Monitors the On/Off power sequence
•
Monitors system resets
•
Applies a preset voltage to switch blades and fan control boards
System Power Status
The
cpower
command is the main interface for all power management commands. You can
request power status and power-on or power-off the system with commands entered via the
administrative controller server or rack leader controller in the system rack. The
cpower
commands are communicating with BMCs using the IPMI protocol. Note that the term “IRU”
represents a single blade enclosure within a rack. This is a legacy identification from the ICE
“individual rack unit” (IRU) nomenclature.
Note that system-level power-up commands are applied first to service nodes, then to RLCs, then
to blade enclosures and compute blades.
The
cpower
commands may require several seconds to several minutes to complete, depending
on how many blade enclosures are being queried for status, powered-on, or turned off.
#
cpower system status
This command gives the status of all compute nodes in the system.
To power on a specific blade enclosure, enter a command similar to the following:
#
cpower iru on r1i0
In this example, the system should respond by powering on the IRU (blade enclosure) 0 nodes in
rack 1. Note that this command does not power-on the system administration (server) controller,
rack leader controller (RLC) server or other service nodes.
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