Intel MPCMM0001 manual CMM Cooling Table, Setting Values in the Cooling Table

Fan Control and Monitoring

statuses. At any moment the Cooling Manager can only operate at one temperature status, it is called the current temperature status. The four temperature statuses are normal, minor, major and critical. The Cooling Manager changes its current temperature status depending on what, if any, temperature events it has received. Here is how the Cooling Manager determines its current temperature status.

•Normal– There is currently no asserted temperature event.

•Minor– There is at least one asserted minor temperature event.

•Major— There is at least one asserted major temperature event.

•Critical— There is at least one asserted critical temperature event.

The user can read the temperature status with the following command:

cmmget –l cmm –d temperaturelevel

16.5CMM Cooling Table

When the Cooling Manager’s current temperature status changes it also changes the fantray’s current cooling level. The Cooling Manager uses a mapping table called the cooling table to map each temperature status to a cooling level.

When the current temperature status changes the Cooling Manager retrieves the cooling level corresponding to that temperature status. It then changes the fantray’s current cooling level to that value.

Two of the cooling levels in the cooling table can be configured by the user, however there are limitations.

Table 57. CMM Cooling Table

Temperature	Sample Cooling	User
Status	Level	Definable?
Critcal	100	No
Major	100	No
Minor	76	Yes
Normal	72	Yes

This data structure is synchronized between the active and standby CMMs.

16.5.1Setting Values in the Cooling Table

There are commands for assigning cooling levels to the normal and minor temperature statuses in the cooling table.

To assign a cooling level to the normal level of fantrayN, the following command is used:

cmmset –l fantrayN -d normallevel –v [cooling level]

To assign a cooling level to the minor level of fantrayN, the following command is used:

cmmset –l fantrayN -d minorlevel –v [cooling level]

MPCMM0001 Chassis Management Module Software Technical Product Specification 133