摘要:
One embodiment of the present invention provides a system that characterizes a computer system parameter by analyzing a target electromagnetic signal radiating from the computer system. First, the system monitors the target electromagnetic signal using a first directional antenna located outside of the computer system, wherein the first directional antenna is directed at a location inside the computer system. The system also monitors the target electromagnetic signal using a second directional antenna located outside of the computer system, wherein a receiving axis of the second antenna is oriented non-parallel to a receiving axis of the first antenna, and wherein the second directional antenna is directed at the location inside the computer system. Next, the system characterizes the computer system parameter based on the target electromagnetic signal received from the first antenna and the target electromagnetic signal received from the second antenna. Then, the system generates a request for an action based on the characterization of the computer system.
摘要:
A system for determining vibration of at least one hard disk drive includes one or more computers configured to command a plurality of reads from the at least one hard disk drive such that, for each of the plurality of reads, data stored on the at least one hard disk drive is retrieved directly from the at least one hard disk drive. The one or more computers are also configured to obtain read rate information related to the plurality of reads and to determine a vibration level experienced by the at least one hard disk drive based on the read rate information.
摘要:
Some embodiments of the present invention provide a system that estimates an ambient temperature of air outside of a computer system. During operation, a temperature inside the computer system is measured for different flow rates of air into the computer system. Next, the temperature measurements are used to determine a relationship between the temperature inside the computer system and a parameter related to the flow rate of air into the computer system. Then, the ambient temperature of air outside the computer system is estimated based on the relationship.
摘要:
One embodiment provides a system that analyzes telemetry data from a monitored system. During operation, the system periodically obtains the telemetry data as a set of telemetry variables from the monitored system and updates a multidimensional real-time distribution of the telemetry data using the obtained telemetry variables. Next, the system analyzes a statistical deviation of the multidimensional real-time distribution from a multidimensional reference distribution for the monitored system using a multivariate sequential probability ratio test (SPRT) and assesses the integrity of the monitored system based on the statistical deviation of the multidimensional real-time distribution. If the assessed integrity falls below a threshold, the system determines a fault in the monitored system corresponding to a source of the statistical deviation.
摘要:
One embodiment of the present invention provides a system that characterizes a computer system parameter by analyzing a target electromagnetic signal radiating from the computer system. First, the system monitors the target electromagnetic signal using a first directional antenna located outside of the computer system, wherein the first directional antenna is directed at a location inside the computer system. The system also monitors the target electromagnetic signal using a second directional antenna located outside of the computer system, wherein a receiving axis of the second antenna is oriented non-parallel to a receiving axis of the first antenna, and wherein the second directional antenna is directed at the location inside the computer system. Next, the system characterizes the computer system parameter based on the target electromagnetic signal received from the first antenna and the target electromagnetic signal received from the second antenna. Then, the system generates a request for an action based on the characterization of the computer system.
摘要:
Some embodiments of the present invention provide a system that generates a utilization charge for a computer system. First, a set of performance parameters of the computer system are monitored. Next, a power utilization of the computer system is inferred based on the set of performance parameters and a power-utilization model. Then, a utilization charge is generated based on the power utilization of the computer system.
摘要:
Embodiments of a system for regulating temperature in a computer system are described. During operation, the system estimates a thermal trajectory as a function of time in at least a portion of the computer system. Then, the system modifies a flow resistance of a cooling mechanism in a thermal-regulation system in the computer system based on the estimated thermal trajectory, where the flow resistance is modified to regulate a temperature of at least the portion of the computer system.
摘要:
A system that monitors electromagnetic interference (EMI) signals to facilitate proactive fault monitoring in a computer system is presented. During operation, the system receives EMI signals from one or more antennas located in close proximity to the computer system. The system then analyzes the received signals to proactively detect anomalies during operation of the computer system.
摘要:
Embodiments of the present invention provide a system for detecting vibrations from a component. The system operates by coupling vibrations from a component to a membrane using a flexible connecting line. The membrane converts the vibrations into acoustic waves that are transmitted through a medium. Finally, a microphone detects the acoustic waves in the medium and converts the acoustic waves into electrical signals.
摘要:
One embodiment of the present invention provides a system for predicting a remaining useful life (RUL) for a computer system. The system starts by collecting values for at least one telemetry metric from the computer system while the computer system is operating. The system then uses the collected values to generate a RUL prediction for the computer system or a component within the computer system