Abstract: Methods and apparatus for detecting a failed temperature sensor within a data storage device and for mitigating the loss of the sensor are provided. One such data storage device includes a non-volatile memory (NVM), a set of temperature sensors, and a processor coupled to the NVM and the temperature sensors. The processor is configured to detect failure of one of the temperature sensors and obtain temperature data from the other temperature sensors. The processor is further configured to estimate, based on the obtained temperature data, the temperature at the failed sensor, and then control at least one function of the data storage device based on the estimated temperature, such as controlling entry into a Read Only mode. In some examples, the processor estimates the temperature at the failed sensor or at various virtual sensor locations using pre-determined formulas having offsets and coefficients determined during an initial machine learning calibration procedure.

Abstract: Methods and apparatus for thermal management in data storage devices are provided. One such data storage device includes a non-volatile memory (NVM), at least one ambient temperature sensor configured to detect an ambient temperature of the data storage device, at least one component temperature sensor configured to detect one or more component temperatures of one or more components of the data storage device, and a processor coupled to the NVM, the at least one ambient temperature sensor, and the at least one component temperature sensor. The processor is configured to determine a composite temperature of the data storage device based on the one or more component temperatures and the ambient temperature. The processor is further configured to determine whether the composite temperature exceeds a threshold and perform a thermal management operation if the composite temperature exceeds the threshold.

Abstract: Methods and apparatus for thermal management in data storage devices are provided. One such data storage device includes a non-volatile memory (NVM), at least one ambient temperature sensor configured to detect an ambient temperature of the data storage device, at least one component temperature sensor configured to detect one or more component temperatures of one or more components of the data storage device, and a processor coupled to the NVM, the at least one ambient temperature sensor, and the at least one component temperature sensor. The processor is configured to determine a composite temperature of the data storage device based on the one or more component temperatures and the ambient temperature. The processor is further configured to determine whether the composite temperature exceeds a threshold and perform a thermal management operation if the composite temperature exceeds the threshold.