Lenovo Flex System x220, Installation And Service Manual

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• From the CMM web interface, select Compute Nodes from the Chassis Management menu.
For more information, see the the "Flex System Chassis Management Module: User's Guide" at
http://pic.dhe.ibm.com/infocenter/flexsys/information/topic/com.lenovo.acc.cmm.doc/ cmm_user_
guide.html. All fields and options are described in the CMM web interface online help.
• For more information about Flex System Manager management software,
see the "Flex System Manager Software: Installation and Service Guide" at
http://pic.dhe.ibm.com/infocenter/flexsys/information/topic/com.ibm.acc.8731.doc/product_
page.html.
Power button/LED
When the compute node is connected to power through the Flex System chassis, press this button to
turn on or turn off the compute node.
Notes: The power button works only if local power control is enabled for the compute node. Local
power control is enabled and disabled through the CMM power command and the CMM web interface.
• For more information about the CMM power command, see the "Flex System
Chassis Management Module: Command-Line Interface Reference Guide" at
http://pic.dhe.ibm.com/infocenter/flexsys/information/topic/com.lenovo.acc.cmm.doc/cli_
command_ power.html.
• From the CMM web interface, select Compute Nodes from the Chassis Management menu.
For more information, see the the "Flex System Chassis Management Module: User's Guide" at
http://pic.dhe.ibm.com/infocenter/flexsys/information/topic/com.lenovo.acc.cmm.doc/ cmm_user_
guide.html. All fields and options are described in the CMM web interface online help.
After the compute node is removed from the chassis, press and hold this button to activate the
system-board LEDs (light path diagnostics). See “Compute node controls, connectors, and LEDs” on
page 12 for more information.
This button is also the power LED. This green LED indicates the power status of the compute node:
• Flashing rapidly : The LED flashes rapidly for the following reasons:
– The compute node has been installed in a chassis. When you install the compute node, the LED
flashes rapidly for up to 90 seconds while the integrated management module II (IMM2) in the
compute node is initializing and synchronizing with the Chassis Management Module.
– Power permissions have not been assigned to the compute node through the Chassis
Management Module.
– The Flex System chassis does not have enough power to turn on the compute node.
– The IMM2 in the compute node is not communicating with the Chassis Management Module.
• Flashing slowly : The compute node is connected to power through the Flex System chassis and is
ready to be turned on.
• Lit continuously : The compute node is connected to power through the Flex System chassis and is
turned on.
When the compute node is on, pressing this button causes an orderly shutdown of the compute node
so that it can be removed safely from the chassis. This includes shutting down the operating system (if
possible) and removing power from the compute node.
If an operating system is running, you might have to press the button for approximately 4 seconds to
initiate the shutdown.
Attention: Pressing the button for 4 seconds forces the operating system to shut down immediately.
Data loss is possible.
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Flex System x220 Compute Node Installation and Service Guide