A fan assembly includes a socket to receive a fan module, a fan flap coupled to a first side wall of the socket, and an anti-reflow device coupled to a second side wall of the socket. The fan flap moves in a curved path between a first position and a second position. The anti-reflow device has an attachment feature, an embossed feature, and a stopping feature. The attachment feature attaches the anti-reflow device to the second side wall. The embossed feature extends through a first aperture in the second side wall. The stopping feature extends through a second aperture in the second side wall and contacts the fan flap. When the fan module is removed, the stopping feature retains the fan flap in the first position to block the socket and prevent air from reflowing through the socket.

A method for controlling a venting system, in particular a venting system for cooling electronic control devices. The venting system has a first ventilator and a second ventilator. The first ventilator is controlled via a first channel and the second ventilator is controlled via a second channel. The two ventilators are mechanically independent of each other and controlled separately from each other.

The disclosed embodiments provide a system that estimates a remaining useful life (RUL) for a fan. During operation, the system receives telemetry data associated with the fan during operation of the critical asset, wherein the telemetry data includes a fan-speed signal. Next, the system uses the telemetry data to construct a historical fan-speed profile, which indicates a cumulative time that the fan has operated in specific ranges of fan speeds. The system then computes an RUL for the fan based on the historical fan-speed profile and empirical time-to-failure (TTF) data, which indicates a TTF for the same type of fan as a function of fan speed. Finally, when the RUL falls below a threshold, the system generates a notification indicating that the fan needs to be replaced.

A system of fans ventilates heated air from within an IHS (Information Handling System), such as a rack-mounted server, when operated during normal conditions at a rated fan speed. A controller detects a failure of a fan of this fan system and identifies the functioning fans of the system. One or more of the functioning fans are selected for boosting by operation of a fan failure compensation circuit that has been configured for delivery of additional power to the selected boost fans. The fan failure compensation circuit delivers an output voltage that boost the airflow output of the system to compensate for the failed fan. By increasing the output voltage by approximately twenty percent, the boosted fans operate at approximately fifteen percent above rated speeds, which has been demonstrated to compensate for a failed fan while avoiding further failures during the expected lifespan of the fan system.

An information handling resource blank configured to populate a slot of an information handling system in lieu of an information handling resource may include a form factor having at least some features in common with that of the information handling resource and one or more false fans mechanically coupled to the form factor. Each of the one or more false fans may be configured to have a first airflow impedance when airflow through such false fan is below a threshold airflow and have a second airflow impedance when airflow through such false fan is above the threshold airflow.

An airflow management system that can be fitted to an electrical cabinet intended to accommodate electrical devices in the internal volume thereof, the system comprising: a casing comprising at least one air input intended to be placed in communication with the internal volume of the electrical cabinet, at least two air outputs and at least one principal throat arranged to connect the air input to the two air outputs, a switch device arranged inside said principal throat, between the first air output and the second air output, the switch device comprising movable flaps that can be controlled between a first position in which the air input communicates solely with the first air output and a second position in which the air input communicates at least with the second air output.

A system includes one or more power distribution blocks configured to provide power to multiple computing devices in a data center. The system also includes a redundancy power distribution block configured to provide redundant power to the computing devices in the data center. The system further includes multiple mechanical cooling electrical distribution blocks electrically coupled to the redundancy power distribution block, each mechanical cooling electrical distribution block configured to provide mechanical cooling to the computing devices in the data center. In response to detection of a power failure in at least one of the mechanical cooling electrical distribution blocks, the redundancy power distribution block is further configured to provide electrical power to the at least one mechanical cooling electrical distribution block exhibiting the power failure.

A system includes a top-of-rack, a first plurality of chassis, and a first backplane. The first plurality of chassis each includes at least one rack module and a chassis network switch that connects to each of the at least one rack module. The first backplane includes a first backplane network switch that connects to the top-of-rack and connects to each of the first plurality of chassis via the chassis network switch of each of the first plurality of chassis.

An air flow distribution system for a plurality of fans includes an air collimator that is operable to pass a flow of air in a linear vertical direction, thereby creating an improved optimal flow direction for cooling device components. The air collimator includes air transfer diverters to redirect swirling air from a fan into a linear flow, thereby increasing the cross-sectional air flow distribution throughout the device being cooled. Self-activating, separately controlled plurality of louver systems automatically close upon failure of an associated one of a plurality of cooling fans to prevent air from recirculating back through the failed fan. Therefore, air continues to move in a linear direction across the device components such that the device components remain at a specified temperature.

Power distribution modules in distributed antenna systems include fan monitoring circuits for indicating an alarm condition to head-end equipment. The alarm condition can be used by system operator/owners that a fan is drawing excessive power, thereby detracting from system performance, or indicating that the fan may fail. The alarm condition signal can be returned to the head-end equipment via an uplink communication path between a remote unit powered by the module and the head-end equipment.