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Intel NetStructure
®
MPCMM0002 Chassis Management Module
July 2007 Hardware TPS
Order Number: 309247-004US 41
Rear Connections—MPCMM0002 CMM
7.2 Guide Post
The guide post is FCI 73474-201 as shown in Figure 17.
7.3 CMM Redundancy
When a chassis is powered up, the CMM determines which of the two CMMs is initially
active. Once the CMM firmware is loaded, it runs an algorithm to determine which CMM
is healthier—see the Intel NetStructure
®
MPCMM0001 Chassis Management Module
and Intel NetStructure
®
MPCMM0002 CMM Software Technical Product Specification for
more information.
During chassis initialization, the active CMM is the first one that meets the following
criteria:
• NGOI is not asserted low, which would indicate the other CMM is already active.
Figure 16. Cross-Connected CMM Signals
CMM 2CMM 1 Backplane
PRESI#
PRES#
HLYI#
HLY#
NGOI
NGO
PRESI#
PRES#
HLYI#
HLY#
NGOI
NGO
Figure 17. Guide Post to Backplane