Chapter 6. Shared Bladecenter Resources - IBM 8677 - BladeCenter Rack-mountable - Power Supply Installation And User Manual

Chapter 6. Shared BladeCenter resources

The BladeCenter unit provides resources that are available to most blade servers at
all times, such as power modules, cooling, system management, and network I/O
modules; no user intervention is required. Some resources are selectable for use by
a single blade server at a time, such as the media tray (CD/DVD drive, and USB
connector) or the keyboard-video-mouse (KVM). You can select the resources for a
blade server in the following ways:
Most blade servers have two selection buttons on the front of the blade server:
and
You can use the management-module Web interface to enable or disable the select
buttons on the blade servers and change ownership of the media tray or the KVM
(Blade Tasks → Remote Control).
The monitor that is attached to the management module shows the video output
from the blade server that is the current owner of the KVM. When there is no
actively selected video from any blade server, the video from blade server 14 is
routed to the management module. While the management module is restarting,
there is temporarily no current KVM owner. The video from blade server 14 is
displayed on the monitor briefly until the management module uses its NVRAM
values to reestablish ownership of the KVM and media tray. After that, the video
from the blade server that is the current KVM owner is displayed on the monitor.
v To switch the KVM to a specific blade server, press the
v To switch the media tray to a specific blade server, press the
The management module immediately assigns the resource to the blade server that
is requesting it. Some blade servers do not support a KVM.
On 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:
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. When using some keyboards, such as the 28L3644
(37L0888) keyboard, you must hold down the Shift key while you enter this key
sequence.
It can take up to 20 seconds for the operating system in the switched-to blade
server to recognize the media tray or the KVM. If you install Microsoft Windows
2000 on a blade server while it is not the current owner of the media tray or the
KVM, the first time the blade server requests ownership after the operating system
has been installed, it can take up to 1 minute for the operating system to recognize
the devices (this is a one-time-only occurrence).
Note: The operating system in the blade server must provide USB support for the
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server.
blade server.
blade server to recognize and use the media tray. The BladeCenter unit uses
USB for internal communication with these devices.
CD
button on that blade
CD
button on that
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