AMM stands for Advanced Management Module :
The management module provides systems-management functions and keyboard/video/mouse (KVM) multiplexing for all of the blade servers in the BladeCenter unit that support KVM. It controls the external keyboard, mouse, and video connections, for use by a local console, and a 10/100 Mbps Ethernet remote management connection.
Each BladeCenter unit comes with at least one management module. Some BladeCenter units support installation of a second, standby management module. Only one of the management modules in a BladeCenter unit can control the BladeCenter unit at any one time, and this management module functions as the primary management module. If a standby management module is installed, it does not control the BladeCenter unit it is switched to act as primary, either manually or automatically, if the primary management module fails. If two management modules are installed in a BladeCenter unit, they must be of the same type: the advanced management module is not compatible for installation in the same BladeCenter unit with other management-module types. Before control
can switch between the primary and standby management modules, both management modules must have the same level of firmware. . The firmware level must support redundant management-module function, to enable changeover of control from the primary (active) management module to the standby management module. A firmware upgrade to the primary, or config changes, will copy over to the secondary to keep them in sync. The IP config allows for the primary IP to float as the primary AMM fails over.
Note: After failover, you might not be able to establish a network connection to the management module for 5 minutes.
The service processor in the management module communicates with the service processor in each blade server to support features such as blade server power-on requests, error and event reporting, KVM requests, and requests to use the BladeCenter shared media tray (removable-media drives and USB ports).
Basic Commands to check the health of the chassis components via AMM :
ssh mm00X health -l a ---> Health of all chassis components
ssh mm00X health -l a -f
ssh mm00X list -l 2 ---> Shows AMMs Role (Primary/Standby)
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