Lenovo Flex System x220, Installation And Service Manual

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1. Wait until the power LED on the compute node flashes slowly before you press the power button.
While the IMM2 in the compute node is initializing and synchronizing with the Chassis Management
Module, the power LED flashes rapidly, and the power button on the compute node does not
respond. This process can take approximately 90 seconds after the compute node has been installed.
2. While the compute node is starting, the power LED on the front of the compute node is lit and does
not flash. See “Compute node controls, connectors, and LEDs” on page 12 for the power LED states.
• If a power failure occurs, the Flex System chassis and the compute node can be configured through the
CMM power command and the CMM web interface to start automatically when power is restored.
– 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.
• You can turn on the compute node through the CMM power command, the CMM web interface, or Flex
System Manager management software (if installed).
– 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.
– 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.
• You can turn on the compute node through the Wake on LAN feature. The compute node must be
connected to power (the power LED is flashing slowly) and must be communicating with the Chassis
Management Module. The operating system must support the Wake on LAN feature, and the Wake on
LAN feature must be enabled through the Chassis Management Module web interface.
Turning off the compute node
Use this information for details about turning off the compute node.
When you turn off the compute node, it is still connected to power through the Flex System chassis. The
compute node can respond to requests from the IMM2, such as a remote request to turn on the compute
node. To remove all power from the compute node, you must remove it from the Flex System chassis.
Before you turn off the compute node, shut down the operating system. See the operating-system
documentation for information about shutting down the operating system.
The compute node can be turned off in any of the following ways:
• You can press the power button on the compute node (see “Compute node controls, connectors, and
LEDs” on page 12). This starts an orderly shutdown of the operating system, if this feature is supported
by the operating system.
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Flex System x220 Compute Node Installation and Service Guide