A system, apparatus, and procedure for controlling a fan module. The system comprises a chassis having a backplane, at least one fan module arranged in the chassis, and a profile switch. In one embodiment, the profile switch is arranged in the chassis. Each fan module includes at least one fan and a
A system, apparatus, and procedure for controlling a fan module. The system comprises a chassis having a backplane, at least one fan module arranged in the chassis, and a profile switch. In one embodiment, the profile switch is arranged in the chassis. Each fan module includes at least one fan and a fan module controller arranged to receive a control signal from a shelf controller. The profile switch is arranged to signal the fan module controller so as to control the at least one fan based on operating profiles corresponding to selected switch positions of the switch.
대표청구항▼
1. A system comprising: a chassis having abackplane;at least one fan module arranged in the chassis, each fan module including at least one fan and a fan module controller arranged to receive a control signal from a shelf controller; anda profile switch arranged to signal the fan module controller s
1. A system comprising: a chassis having abackplane;at least one fan module arranged in the chassis, each fan module including at least one fan and a fan module controller arranged to receive a control signal from a shelf controller; anda profile switch arranged to signal the fan module controller so as to control the at least one fan based on operating profiles corresponding to selected switch positions of the profile switch, each operating profile being defined based on a deployment environment of the at least one fan module, the deployment environment being external to the system,the operating profiles including at least one fixed type profile and at least one variable type profile, the at least one fixed type profile defining at least two fan speeds that are predetermined and individually selectable based on temperature, the at least one variable type profile defining an algorithm that determines a non-predetermined fan speed based on temperature,wherein the fan module controller determines at least one of whether a state of the at least one fan is a failure state and whether a timer has expired, and wherein, in a case where the fan module controller determines that the state of the at least one fan is a failure state or that the timer has expired, the fan module controller controls the at least one fan so that it operates at a predetermined one of the fan speeds. 2. The system of claim 1, wherein the at least one variable type profile is a software-defined profile, and when the switch position is selected that corresponds to the software defined profile, the control signal specifies a fan speed specified by the shelf controller, based on the algorithm. 3. The system according to claim 1, wherein the variable type profile is a software defined profile and the fixed type profile is a hardware defined profile. 4. The system according to claim 1, wherein the control signal specifies an operational state of the fan module. 5. The system of claim 4, wherein the fan module controller sets a speed of the at least one fan in accordance with a speed defined by at least one corresponding operating profile and the operational state specified by the control signal. 6. The system according to claim 4, wherein the at least one operational state is associated with one or more environmental factors determined by the shelf controller. 7. The system of claim 6, wherein each operating profile defines at least one operational state and a fan speed corresponding to each operational state. 8. A fan module included in a system comprising a profile switch, the fan module comprising: at least one fan; anda fan module controller arranged to control the at least one fan based at least on an external control signal applied to the fan module controller,wherein the external control signal is applied to the fan module controller so as to control the at least one fan based on operating profiles corresponding to selected switch positions of the profile switch,the operating profiles including at least one fixed type profile and at least one variable type profile, the at least one fixed type profile defining at least two fan speeds that are predetermined and individually selectable based on temperature, the at least one variable type profile defining an algorithm that determines a non-predetermined fan speed based on temperature,wherein the fan module controller determines at least one of whether a state of the at least one fan is a failure state and whether a timer has expired, and wherein, in a case where the fan module controller determines that the state of the at least one fan is a failure state or that the timer has expired, the fan module controller controls the at least one fan so that it operates at a predetermined one of the fan speeds. 9. The fan module of claim 8, wherein the fan module controller outputs information specifying a speed of the at least one fan. 10. The fan module of claim 8, wherein the external control signal is applied from a shelf controller of a first chassis that is constructed to receive the fan module or a second chassis separate from the fan module. 11. The fan module of claim 10, wherein at least one fan speed setting is specified by the external control signal from the shelf controller. 12. The fan module of claim 10, wherein the fan module controller sets a fan speed of the at least one fan based, at least in part, on the operating profile set by the profile switch. 13. The fan module of claim 12, wherein the profile is defined by at least one state of the fan module and a fan speed corresponding to each state of the fan module. 14. The fan module of claim 13, wherein the state is specified by the external control signal from the shelf controller or is autonomously specified by the fan module controller. 15. The fan module of claim 8, wherein the profile switch includes at least two switches, and each of the at least two switches is settable in one of plural positions. 16. The fan module of claim 8, wherein the at least one fan includes a plurality of fans, and wherein, in the case where the fan module controller determines that the state of the at least one fan is the failure state or that the timer has expired, the fan module controller controls all of the plurality of fans so as to operate at the predetermined one of the fan speeds. 17. A procedure of controlling a fan module, the method comprising: setting an operating profile by setting a switch position of a profile switch which is coupled to at least one fan module included in a system, each operating profile being defined based on a deployment environment of the at least one fan module, the deployment environment being external to the system;determining at least one of an autonomous state of a fan module controller and whether a timer has expired; andsetting a fan speed to a normal speed defined for the operating profile if the autonomous state is normal and setting a fan speed to a fast speed defined for the operating profile if the autonomous state is not normal or the timer has expired,each operating profile including at least one of a fixed type profile or at least one variable type profile, the at least one fixed type profile defining at least two fan speeds that are predetermined and individually selectable based on temperature, the at least one variable type profile defining an algorithm that determines a non-predetermined fan speed based on temperature. 18. The procedure of claim 17, wherein if the operating profile is the at least one variable type profile, activating an interface between the fan module controller of the fan module and the shelf controller, wherein the fan speed is received by the fan module controller. 19. The procedure of claim 17, wherein the fan module controller state is based at least on an environmental factor in the chassis. 20. The procedure of claim 17, wherein the switch position corresponds to an operating profile that defines fan speed operational points for a given state of a fan module housed in a chassis. 21. A procedure of controlling a fan module, the method comprising: setting a switch position of a profile switch which is coupled to at least one fan module;obtaining a fan module controller fan state from a shelf controller;determining an autonomous state of the fan module controller; andsetting a fan speed to a normal speed defined for the profile switch if the fan module controller state and the autonomous state of the fan module controller are normal and setting the fan speed to a fast speed defined for the profile if the fan module controller state and/or the autonomous state of the fan module controller are not normal,wherein the autonomous state of the fan module controller is based at least on one of a failure status of fans in the fan module, the fan module controller fan state, and a hold-off timer expiration. 22. The procedure of claim 21, wherein in a case where any fans of the fan module are determined to have failed, the autonomous state of the fan module controller is set to fast. 23. The procedure of claim 21, wherein in a case where no fans are determined to have failed and the fan module controller fan state has been obtained, the autonomous state of the fan module controller is set to normal. 24. The procedure of claim 21, wherein in a case where no fans are determined to have failed and the fan module controller fan state has not been obtained and there is no hold-off timer expiration, the autonomous state of the fan module controller is set to normal. 25. The procedure of claim 21, wherein in a case where no fans are determined to have failed and the fan module controller fan state has not been obtained and the hold-off timer expiration has occurred, the autonomous state of the fan module controller is set to fast.
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