User's Manual

I/O Fabric Management 317
For example:
• An Ethernet MC connected to a Fibre Channel IOM is an invalid
configuration. However, an Ethernet MC connected to both an Ethernet
switch and an Ethernet pass-through IOM installed in the same IOM
group is a valid connection.
• A Fibre Channel pass-through IOM and a fibre channel switch IOM in
slots B1 and B2 is a valid configuration if the first MCs on all of the servers
are also fibre channel. In this case, the CMC will power-on the IOMs and
the servers. However, certain fibre channel redundancy software may not
support this configuration; not all valid configurations are necessarily
supported configurations.
NOTE: Fabric verification for server MCs is performed only when the chassis is
powered on. When the chassis is on standby power, the iDRACs on the server
modules remain powered off and thus are unable to report the server's MC fabric
type. The MC fabric type may not be reported in the CMC user interface until the
iDRAC on the server is powered on.
Invalid Configurations
There are three types of invalid configurations:
• Invalid MC configuration, where a newly installed MC’s fabric type is
different from the existing IOM fabric
• Invalid IOM-MC configuration, where a newly installed IOM’s fabric type
and the resident MC’s fabric types do not match or are incompatible
• Invalid IOM-IOM configuration, where a newly installed IOM has a
different or incompatible fabric type from an IOM already installed
in its group
Invalid Mezzanine Card (MC) Configuration
An invalid MC configuration occurs when a single server’s MC is not
supported by its corresponding IOM. In this case, all the other servers in the
chassis can be running, but the server with the mismatched MC card will not
be allowed to power on.