The following table summarizes the types of modules that can be used in each
I/O-module bay. See “Rear view” on page 10 for the location of the I/O-module bays
on the BladeCenter unit.
Table1. Hot-swap I/O module types by location
Bays I/O-module function Permissible I/O module
1 and 2 Network connections 1 and 2
(Ethernet) for all blade servers in the
BladeCenter unit
One of the following combinations:
vTwoEthernet switch modules
vTwopass-thru modules
vOne Ethernet module and one
pass-thru module
3 and 4 Network connections 3 and 4 (from all
blade server I/O expansion options on
blade servers in the BladeCenter unit)
One of the following combinations:
vTwoEthernet switch modules
vTwoFibre Channel switch modules
vTwopass-thru modules
vOne pass-thru module and one
Ethernet switch module
vOne pass-thru module and one Fibre
Channel switch module
Important:
vThe modules used must support the
network interface used on the I/O
expansion options.
vYoucannot combine Ethernet and
Fibre Channel switch modules in bays
3 and 4.
Notes:
1. Theenumeration of the Ethernet controllers in a blade server is
operating-system dependent. Youcan verify the Ethernet controller designations
a blade server uses through your operating system settings.
2. Therouting of an Ethernet controller to a particular I/O-module bay depends on
the type of blade server. Youcan verify which Ethernet controller is routed to
which I/O-module bay by using the following test:
a. Installonly one Ethernet switch module or pass-thru module, in I/O-module
bay 1.
b. Makesure the ports on the switch module or pass-thru module are enabled
(see the User's Guide or Command-Line Interface Reference Guide for your
management module type for instructions).
c. Enableonly one of the Ethernet controllers on the blade server. Note the
designation the blade server operating system has for the controller.
d. Pingan external computer on the network connected to the switch module.
If you can ping the external computer, the Ethernet controller you enabled is
associated with the switch module in I/O-module bay 1. The other Ethernet
controller in the blade server is associated with the switch module in I/O-module
bay 2.
3. Ifyou have installed an I/O expansion option on a blade server, communications
from the option are routed to I/O-module bays 3 and 4. Youcan verify which
controller on the option is routed to which I/O-module bay by performing the test
in note 2, using a controller on the I/O expansion option and a compatible
switch module or pass-thru module in I/O-module bay 3 or 4.
Chapter4. Installing options 35