Lenovo Flex System x220, Installation And Service Manual

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Hard disk drive status LED
When this yellow LED is lit, it indicates that an error has occurred with the hard disk drive. The LED
turns off only after the error is corrected. You can check the CMM event log to determine the source
of the condition. For more information, see “Viewing event logs without restarting the compute node”
on page 64.
Fault LED
When this yellow LED is lit, it indicates that a system error has occurred in the compute node. In
addition, the fault LED on the chassis system LED panel is lit. You can check the CMM event log to
determine the source of the condition. For more information, see “Viewing event logs without restarting
the compute node” on page 64. See “Light path diagnostics LEDs” on page 63 for more information
about the LEDs on the compute node.
The fault LED turns off only after the error is corrected.
Note: When the fault LED turns off, you should also clear the IMM event log. Use the Setup utility
to clear the IMM event log.
Check log LED
When this yellow LED is lit, it indicates that a condition that causes an event to be logged in the IMM
event log has occurred.
The check log LED can be turned off through the CMM led command, the CMM web interface, or Flex
System Manager management software (if installed).
• For more information about the CMM led 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_led.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.
1. Alternatively, you can use the CMM_INDICATES_ITE_ERROR_N
command to light the check log LED. See the 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/dw1kt_cmm_
cli_book.pdf for more information.
2. You can check the CMM event log to determine the source of the condition. For more information,
see “Viewing event logs without restarting the compute node” on page 64.
Identify LED
The system administrator can remotely light this blue LED to aid in visually locating the compute node.
When this LED is lit, the identify LED on the Flex System chassis is also lit. The identify LED can be
lit and turned off through the CMM
led command, the CMM web interface, or Flex System Manager
management software (if installed).
• For more information about the CMM led 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_led.html.
Chapter 1
.
Introduction
13