Intel MPCMM0002 manual Guide Post, CMM Redundancy

Rear Connections—MPCMM0002 CMM

Figure 16. Cross-Connected CMM Signals

CMM 1	Backplane	CMM 2
NGO		NGO
NGOI		NGOI
HLY#		HLY#
HLYI#		HLYI#
PRES#		PRES#
PRESI#		PRESI#

7.2Guide Post

The guide post is FCI 73474-201 as shown in Figure 17.

Figure 17. Guide Post to Backplane

7.3CMM 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.

	Intel NetStructure® MPCMM0002 Chassis Management Module
July 2007	Hardware TPS
Order Number: 309247-004US	41