Blade Server Controls And Leds - Lenovo BladeCenter HS23 7875 Problem Determination And Service Manual

Blade server controls and LEDs

Use this information for details about the controls and LEDs on the blade server.
The following illustration identifies the buttons and information LEDs on the blade-server control panel.
Power LED
Activity LED
Location LED
Information LED
Fault LED
Power-on LED: This green LED indicates the power status of the blade server in the following manner:
• Flashing rapidly: While the service processor in the blade server is initializing and synchronizing with the
management module, the power-on LED flashes rapidly, and the power-control button on the blade server
does not respond. This process can take approximately two minutes after the blade server has been
installed. If the LED continues to flash rapidly, the blade server might not have power permissions
assigned to it through the Advanced Management Module (AMM), the BladeCenter unit does not have
enough power to turn on the blade server, or the service processor (IMM2) on the blade server is not
communicating with the AMM.
• Flashing slowly: The blade server has power supplied and is ready to be turned on.
• Lit continuously: The blade server has power and is turned on.
Activity LED: When this green LED is lit, it indicates that there is activity on the external storage device or
network.
Location LED: The system administrator can remotely turn on this blue LED to aid in visually locating the
blade server. When this LED is lit, the location LED on the BladeCenter unit is also lit. The location LED can
be turned off through the Advanced-Management-Module Web interface or through IBM® Director Console.
For more information about the Advanced-Management-Module web interface, see http://www.ibm.com/
systems/management/. For more information about IBM® Director, see the documentation on the IBM®
Director CD that comes with the server, or visit the IBM® Director Information Center at http://publib.
boulder.ibm.com/infocenter/director/v6r1x/index.jsp.
Information LED: The Information LED is indicated by a lower case "i". When this yellow LED is lit, it
indicates that information about a system event in the blade server has been placed in the Advanced-
Management-Module event log. The information LED can be turned off through the Advanced-Management-
Module CLI, SNMP, or web interface or through IBM® Director Console. For more information about the
Advanced-Management-Module web interface, see http://www.ibm.com/systems/management/. For more
information about IBM® Director, see the documentation on the IBM® Director CD that comes with the
server, or visit the IBM® Director Information Center at http://publib.boulder.ibm.com/infocenter/director/
v6r1x/index.jsp.
Fault LED: The Fault LED is indicated by an exclamation mark. When this yellow LED is lit, it indicates that a
system error has occurred in the blade server. The blade-error LED turns off only after the error is corrected.
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BladeCenter HS23 Blade ServerProblem Determination and Service Guide
Power
button
NMI button
KVM select
button/LED
Media-tray select
button/LED