IBM HS20 Hardware Maintenance Manual - Page 21

Notes, NumLock NumLock, Enter, Power-control button, Power-on LED, Activity LED, Location LED - loading

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Notes: 1. The operating system in the blade server must provide USB support for the blade server to recognize and use the keyboard, mouse, CD-ROM drive, and diskette drive. The BladeCenter unit uses USB for internal communication with these devices. 2. Although the keyboard attached to the BladeCenter unit is a PS/2-style keyboard, communication with it is through a USB bus. When you are running an operating system that does not have USB drivers, such as in the following instances, the keyboard responds very slowly. v Running the blade server integrated diagnostics v Running a BIOS update diskette on a blade server v Updating the diagnostics on a blade server v Running the Broadcom firmware CD for a blade server 3. If you install Microsoft Windows 2000 on the blade server while it is not the current owner of the keyboard, video, and mouse, a delay of up to one minute occurs the first time 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 keyboard-video-mouse switching time frame (up to 20 seconds). 4. The blade-error LED, information LED, and location LED can be turned off through the BladeCenter management-module Web interface or the IBM Director console. The IBM Director program is a system-management product that comes with the BladeCenter unit. If there is no response when you press the keyboard/mouse/video select button, you can use the management-module Web interface to determine whether local control has been disabled on the blade server. You can also press keyboard keys in the following sequence to switch keyboard/mouse/video 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. Power-control button: This button is behind the control panel door. Press this button to manually turn the blade server on or off. Note: The power control button has effect only if local power control is enabled for the blade server. Local power control is enabled and disabled through the BladeCenter management module Web interface. Power-on LED: This green LED indicates the power status of the blade server in the following manner: v Flashing rapidly - The service processor on the blade server is handshaking with the BladeCenter management module. v Flashing slowly - The blade server has power but is not turned on. v Lit continuously - The blade server has power and is turned on. Activity LED: When this green LED is lit, it indicates that there is hard-disk-drive, flash drive, or network activity. Location LED: When this blue LED is lit, it has been turned on remotely by the system administrator to aid in visually locating the blade server. The location LED Chapter 2. Blade server power, controls, and indicators 11

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Notes:
1.
The operating system in the blade server must provide USB support for the
blade server to recognize and use the keyboard, mouse, CD-ROM drive, and
diskette drive. The BladeCenter unit uses USB for internal communication with
these devices.
2.
Although the keyboard attached to the BladeCenter unit is a PS/2-style
keyboard, communication with it is through a USB bus. When you are running
an operating system that does not have USB drivers, such as in the following
instances, the keyboard responds very slowly.
v
Running the blade server integrated diagnostics
v
Running a BIOS update diskette on a blade server
v
Updating the diagnostics on a blade server
v
Running the Broadcom firmware CD for a blade server
3.
If you install Microsoft Windows 2000 on the blade server while it is not the
current owner of the keyboard, video, and mouse, a delay of up to one minute
occurs the first time 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 keyboard-video-mouse
switching time frame (up to 20 seconds).
4.
The blade-error LED, information LED, and location LED can be turned off
through the BladeCenter management-module Web interface or the IBM
Director console. The IBM Director program is a system-management product
that comes with the BladeCenter unit.
If there is no response when you press the keyboard/mouse/video select button,
you can use the management-module Web interface to determine whether local
control has been disabled on the blade server.
You can also press keyboard keys in the following sequence to switch
keyboard/mouse/video 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.
Power-control button:
This button is behind the control panel door. Press this
button to manually turn the blade server on or off.
Note:
The power control button has effect only if local power control is enabled for
the blade server. Local power control is enabled and disabled through the
BladeCenter management module Web interface.
Power-on LED:
This green LED indicates the power status of the blade server in
the following manner:
v
Flashing rapidly – The service processor on the blade server is handshaking with
the BladeCenter management module.
v
Flashing slowly – The blade server has power but is not turned on.
v
Lit continuously – The blade server has power and is turned on.
Activity LED:
When this green LED is lit, it indicates that there is hard-disk-drive,
flash drive, or network activity.
Location LED:
When this blue LED is lit, it has been turned on remotely by the
system administrator to aid in visually locating the blade server. The location LED
Chapter 2. Blade server power, controls, and indicators
11