Intel MPCMM0001 manual Node Power Control

Node Power Control

Node Power Control 13

The CMM controls power to the nodes of a chassis. The CMM can power up, power down, and reset a board in a particular slot and can be used to query the operational state of a board at any time. The CMM also manages the overall power budget of the shelf as well as power budget of each power feed.

The active CMM is responsible for power management when there are two CMMs operating in a redundant mode. Critical power management data is kept in sync at all times between the active and standby CMM.

13.1Node Operational State Management

The CMM manages FRU insertions, extractions, and the operational states and state transitions of the nodes in a shelf based on Section 3.2.4 of the PICMG 3.0 Specification.

13.2Obtaining the Power State of a Board

The CMM can obtain the power state information of a board at any time by issuing the following command:

cmmget -l bladeN -d powerstate

Where N is the number of the physical slot number in which the blade you are querying resides. This command will give information on whether the blade is present, the power state, and the board state.

13.3Controlling the Power State of a Board

The CMM can power off a board, power on a board, or reset the board.

13.3.1Powering Off a Board

The following command will power off a board:

cmmset -l bladeN -d powerstate -v poweroff

N is the physical slot number where the blade to be powered down resides. Once issued, the command will ask for confirmation by entering “y” before continuing.

13.3.2Powering On a Board

The following command will power on a board:

cmmset -l bladeN -d powerstate -v poweron

N is the number of the physical slot the blade to be reset resides in.

MPCMM0001 Chassis Management Module Software Technical Product Specification 127