Dell POWEREDGE M1000E - Manual (Page 176)

The following figure shows the location of IOMs in the chassis. The location of each IOM is indicated by its group
number (A, B, or C). These discrete fabric paths are split into two IO Banks, bank one and two. On the chassis, the IOM
slot names are marked A1, A2, B1, B2, C1, and C2.
Figure 4. Rear View of a Chassis, Showing the Location of the IOMs
1 Bank 1 (Slots A1, B1, C1) 2 Bank 2 (Slots A2, B2, C2)
CMC creates entries in both the hardware log and CMC logs for invalid hardware configurations.
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, CMC powers-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.
Fabric verification for server IOMs and 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
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