Abstract: A fan control system includes a fan and a target device. The fan control system includes a controller to control the rotation speed of the fan. The controller controls the rotation speed according to a time-variable rate of current consumed by the target device. Particularly, when the time-variable rate of current exceeds a threshold, the controller controls the fan to operate at a maximum rotation speed.

Abstract: A fan control method for a computer system is provided. The computer system includes a fan and a target device. The fan control system includes a controller to control the rotation speed of the fan. The controller controls the rotation speed according to a time-variable rate of current consumed by the target device. Particularly, when the time-variable rate of current exceeds a threshold, the controller controls the fan to operate at a maximum rotation speed.

Abstract: A fan control system includes a fan and a target device. The fan control system includes a controller to control the rotation speed of the fan. The controller controls the rotation speed according to a time-variable rate of current consumed by the target device. Particularly, when the time-variable rate of current exceeds a threshold, the controller controls the fan to operate at a maximum rotation speed.

Abstract: A fan control system includes a fan and a target device. The fan control system includes a controller to control the rotation speed of the fan. The controller controls the rotation speed according to a time-variable rate of current consumed by the target device. Particularly, when the time-variable rate of current exceeds a threshold, the controller controls the fan to operate at a maximum rotation speed.

Abstract: A power supply system for maintaining the efficiency of an AC/DC power conversion unit in relation to a load is disclosed. The load varies in response to power usage during operation of the power supply system. An AC power input and a DC power output of the power conversion unit direct DC power to attached components. A master controller disposed in the power supply system detects the load of an attached computer system through a DC meter and executes an algorithm to determine the values of circuit parameters of conversion circuits in the AC/DC power conversion unit. The master controller sends the values to a mode controller through a digital signal interface. The mode controller adjusts the operating mode of the conversion circuits and thus changes the efficiency of the AC/DC power conversion unit.

Abstract: Virtual machine management among networked servers coupled for data communications with a data communications network that includes a network device and a Virtual Machine Management Module (‘VMMM’), where VM management includes: monitoring, by the network device, network traffic of applications executing in virtual machines of the servers; determining, in dependence upon the monitored network traffic, whether a particular application's network traffic exceeds a predetermined threshold, the particular application executing in a particular virtual machine of a particular server; if the particular application's network traffic exceeds the predetermined threshold, allocating, by the VMMM, an additional virtual machine in a different server; and instantiating, by the VMMM, in the additional virtual machine at least one application.

Abstract: Virtual machine management among networked servers coupled for data communications with a data communications network that includes a network device and a Virtual Machine Management Module (‘VMMM’), where VM management includes: monitoring, by the network device, network traffic of applications executing in virtual machines of the servers; determining, in dependence upon the monitored network traffic, whether a particular application's network traffic exceeds a predetermined threshold, the particular application executing in a particular virtual machine of a particular server; if the particular application's network traffic exceeds the predetermined threshold, allocating, by the VMMM, an additional virtual machine in a different server; and instantiating, by the VMMM, in the additional virtual machine at least one application.

Abstract: A power supply system for maintaining the efficiency of an AC/DC power conversion unit in relation to a load is disclosed. The load varies in response to power usage during operation of the power supply system. An AC power input and a DC power output of the power conversion unit direct DC power to attached components. A master controller disposed in the power supply system detects the load of an attached computer system through a DC meter and executes an algorithm to determine the values of circuit parameters of conversion circuits in the AC/DC power conversion unit. The master controller sends the values to a mode controller through a digital signal interface. The mode controller adjusts the operating mode of the conversion circuits and thus changes the efficiency of the AC/DC power conversion unit.

Abstract: A fan control method for a computer system is provided. The computer system includes a fan and a target device. The fan control system includes a controller to control the rotation speed of the fan. The controller controls the rotation speed according to a time-variable rate of current consumed by the target device. Particularly, when the time-variable rate of current exceeds a threshold, the controller controls the fan to operate at a maximum rotation speed.

Abstract: A fan control system for a computer system is provided. The computer system includes a fan and a target device. The fan control system includes a controller to control the rotation speed of the fan. The controller controls the rotation speed according to a time-variable rate of current consumed by the target device. Particularly, when the time-variable rate of current exceeds a threshold, the controller controls the fan to operate at a maximum rotation speed.

Abstract: A hammer wrench securing apparatus includes a collar having an elongate portion with a length and a first external perimeter as well as a base portion with a second external perimeter greater than the first external perimeter. A washer has a first internal perimeter extending around the elongate portion distal from the base portion and a spring extends around the elongate portion of the threaded collar between the base portion and the washer. In a method for removing at least one degree of freedom of a wrench, an internally threaded member is applied to an externally threaded member, a tool end of a wrench is applied to the internally threaded member, a threaded sleeve is applied to the externally threaded member adjacent to the internally threaded member and a washer is biased towards the tool end of the wrench.

Abstract: A hammer wrench securing apparatus includes a collar having an elongate portion with a length and a first external perimeter as well as a base portion with a second external perimeter greater than the first external perimeter. A washer has a first internal perimeter extending around the elongate portion distal from the base portion and a spring extends around the elongate portion of the threaded collar between the base portion and the washer. In a method for removing at least one degree of freedom of a wrench, an internally threaded member is applied to an externally threaded member, a tool end of a wrench is applied to the internally threaded member, a threaded sleeve is applied to the externally threaded member adjacent to the internally threaded member and a washer is biased towards the tool end of the wrench.

Abstract: A power supply system for maintaining the efficiency of an AC/DC power conversion unit in relation to a load is disclosed. The load varies in response to power usage during operation of the power supply system. An AC power input and a DC power output of the power conversion unit direct DC power to attached components. A master controller disposed in the power supply system detects the load of an attached computer system through a DC meter and executes an algorithm to determine the values of circuit parameters of conversion circuits in the AC/DC power conversion unit. The master controller sends the values to a mode controller through a digital signal interface. The mode controller adjusts the operating mode of the conversion circuits and thus changes the efficiency of the AC/DC power conversion unit.

Abstract: A power supply system for maintaining the efficiency of an AC/DC power conversion unit in relation to a load is disclosed. The load varies in response to power usage during operation of the power supply system. An AC power input and a DC power output of the power conversion unit direct DC power to attached components. A master controller disposed in the power supply system detects the load of an attached computer system through a DC meter and executes an algorithm to determine the values of circuit parameters of conversion circuits in the AC/DC power conversion unit. The master controller sends the values to a mode controller through a digital signal interface. The mode controller adjusts the operating mode of the conversion circuits and thus changes the efficiency of the AC/DC power conversion unit.

Abstract: Virtual machines are managed on the basis of data obtained from a management information database of a network switch having a plurality of Ethernet links coupled to compute nodes running a plurality of virtual machines. A management entity, such as a provisioning manager, determines the amount of network bandwidth being utilized through each of the Ethernet links. Accordingly, an additional virtual machine may be provisioned to the compute node that is coupled to an Ethernet link identified as having the greatest amount of unutilized network bandwidth.

Abstract: A multi-pressure-quantity fan control system for a computer system is provided. The multi-pressure-quantity fan control system includes a controller. The controller provides a pressure-quantity control signal to a fan of the computer system, in order to set the fan to operate in one of a first pressure-quantity setting and a second pressure-quantity setting, wherein under a predetermined rotating speed, the fan has a first pressure-quantity curve for the first pressure-quantity setting and a second pressure-quantity curve for the second pressure-quantity setting.

Abstract: A hammer wrench securing apparatus includes a collar having an elongate portion with a length and a first external perimeter as well as a base portion with a second external perimeter greater than the first external perimeter. A washer has a first internal perimeter extending around the elongate portion distal from the base portion and a spring extends around the elongate portion of the threaded collar between the base portion and the washer. In a method for removing at least one degree of freedom of a wrench, an internally threaded member is applied to an externally threaded member, a tool end of a wrench is applied to the internally threaded member, a threaded sleeve is applied to the externally threaded member adjacent to the internally threaded member and a washer is biased towards the tool end of the wrench.

Abstract: Migrating virtual machines among networked servers, the servers coupled for data communications with a data communications network that includes a networking device, where migrating includes: establishing, by a virtual machine management module (‘VMMM’), one or more virtual machines on a particular server; querying, by the VMMM, the networking device for link statistics of a link coupling the network device to the particular server for data communications; determining, by the VMMM in dependence upon the link statistics, whether the link coupling the network device to the particular server is degrading; and if the link coupling the network device to the particular server is degrading, migrating a virtual machine executing on the particular server to a destination server. In some embodiments, migrating occurs is carried out only if non-degrading link is available. If no non-degrading links are available, the network device, rather than the link, may be failing.

Abstract: Virtual machines are managed on the basis of data obtained from a management information database of a network switch having a plurality of Ethernet links coupled to compute nodes running a plurality of virtual machines. A management entity, such as a provisioning manager, determines the amount of network bandwidth being utilized through each of the first and second Ethernet links and the amount of network bandwidth being utilized by the Internet Protocol addresses attributable to each of the virtual machines. Accordingly, one of the virtual machines may be migrated from one compute node to another compute node coupled to an Ethernet link having a greater amount of unutilized network bandwidth. Virtual machines may be dynamically migrated in order to provide each virtual machine with a required amount of network bandwidth.

Abstract: Virtual machines are managed on the basis of data obtained from a management information database of a network switch having a plurality of Ethernet links coupled to compute nodes running a plurality of virtual machines. A management entity, such as a provisioning manager, determines the amount of network bandwidth being utilized through each of the Ethernet links. Accordingly, an additional virtual machine may be provisioned to the compute node that is coupled to an Ethernet link identified as having the greatest amount of unutilized network bandwidth.