Blade Server Controls, Leds, And Connectors - IBM BladeCenter HS20 7981 Problem Determination And Service Manual

Blade server controls, LEDs, and connectors

This section describes the blade server control panel buttons and LEDs.
Note: The control panel door is shown in the closed (normal) position in the
following illustration. To access the power-control button, you must open the control
panel door.
KVM (keyboard/video/mouse) select button: Press this button to associate the
shared BladeCenter unit keyboard, video, and mouse ports with the blade server.
The LED on this button flashes while the request is being processed then is lit
when the ownership of the KVM has been transferred to the blade server. It can
take approximately 20 seconds to switch the KVM control to the blade server.
Using a keyboard that is directly attached to the management-module, you can
press keyboard keys in the following sequence to switch KVM control between
blade servers:
If there is no response when you press the KVM select button, you can use the
management-module Web interface to determine whether local control has been
disabled on the blade server.
Note:
1. The operating system in the blade server must provide USB support for the
2. If you install a supported Microsoft Windows operating system on the blade
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BladeCenter HS20 Type 7981: Problem Determination and Service Guide
KVM select button
NumLock NumLock blade_server_number Enter
Where blade_server_number is the two-digit number for the blade bay in which
the blade server is installed.
blade server to recognize and use the keyboard and mouse, even if the
keyboard and mouse have PS/2-style connectors.
server while it is not the current owner of the keyboard, video, and mouse, a
delay of up to 1 minute occurs the first time that you switch the keyboard, video,
and mouse to the blade server. During this one-time-only delay, the blade server
device manager enumerates the keyboard, video, and mouse and loads the
device drivers. All subsequent switching takes place in the normal KVM
switching time frame (up to 20 seconds).
Activity LED
Location LED
Information LED
Blade-error LED
Media-tray select
buttom
Power-control button
Power-on LED