Acoustic Attenuation Option; Switch Modules - IBM 8677 - BladeCenter Rack-mountable - Power Supply Planning And Installation Manual

to avoid potential thermal problems.

Acoustic attenuation option

For server environments where noise reduction is essential, you might choose to
install the BladeCenter Acoustic Attenuation option (acoustic option). The acoustic
option is installed on the back of the BladeCenter unit, directly covering the blower
modules and partially covering the other modules. The system LED panel is
replicated on the acoustic module for visibility.

Switch modules

The BladeCenter unit supports a minimum of one hot-swap Ethernet switch module,
in switch-module bay 2. This switch module provides an internal connection to
Ethernet Link 1 in all the blade servers in the BladeCenter unit. To provide an
internal connection for Ethernet Link 2 in each blade server, install an Ethernet
switch module in switch-module bay 2.
Note: Enumeration of the Ethernet controllers is operating-system dependent. for
If you install an I/O expansion option on any blade server, you must install a
hot-swap switch module of the same network interface in switch-module bay 3 to
obtain network connection 3 for the option; to provide network connection 4 for the
option, install a switch module of that network interface in switch-module bay 4. The
switch modules in bays 3 and 4 provide network connections to all the I/O
expansion options on the blade servers.
Important: The switch modules in switch-module bays 3 and 4 and all blade server
I/O expansion options in the BladeCenter unit must use the same network interface.
For example, if you install a Fibre Channel I/O expansion option on a blade server,
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BladeCenter Type 8677: Planning and Installation Guide
Blower error
LEDs
example, the Ethernet controller located nearer the top of the blade server
whose communications are routed through Ethernet switch module 1, is
designated as the first connection (or Local Area Connection) by Microsoft
Windows 2000, but is designated as the second connection (or eth1) by Red
Hat Linux Version 7.3. The Ethernet controller located nearer the bottom of
the blade server, whose communications are routed through Ethernet Switch
module 2, is designated as the second connection (or Local Area Connection
2) by Microsoft Windows 2000, but is designated as the first connection (or
eth0) by Red Hat Linux Version 7.3.