User's Manual

I/O Fabric Management 253
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 fabric is different
from the existing IOM fabric
• Invalid IOM-MC configuration, where the newly installed IOM and MC
fabric does not match or is 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 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.
Invalid IOM-MC Configuration
The mismatched IOM will be held in the power-off state. The CMC adds an
entry to the CMC and hardware logs noting the invalid configuration and
specifying the IOM name. The CMC will also cause the error LED on the
offending IOM to blink. If the CMC is configured to send alerts, it sends
e-mail and/or SNMP alerts for this event.
For information about the CMC and hardware logs, see "Viewing the Event
Logs" on page 273.
Invalid IOM-IOM Configuration
The CMC holds a newly installed IOM in powered-off state, causes the
IOM’s error LED to blink, and creates entries in the CMC and hardware logs
about the mismatch.