OPTIMIZATION OF FAN CONTROL FOR STORAGE DEVICE

摘要

The present invention provides a storage subsystem capable of preventing abnormal temperature rise within the subsystem and realizing an efficient cooling effect. Therefore, the storage subsystem has two or more controllers having two or more temperature sensors, and each controller determines a provisional rotational speed based on the value of the temperature sensors. One controller out of the multiple controllers operates as the master controller, and the other controllers (slave controllers) transmit a provisional rotational speed determined in its own system to the master controller. The master controller determines a greater value of the provisional rotational speed information received from the slave controllers and the provisional rotational speed determined in its own system as the final rotational speed of the fan.

主权项

1. A storage subsystem comprising:
a first controller having a first temperature sensor and a second temperature sensor; a first power supply having a first memory, a second memory, and a first FAN; a second controller having a third temperature sensor and a fourth temperature sensor; a second power supply having a third memory, a fourth memory, and a second FAN; and multiple storage media; wherein the storage subsystem is equipped with the multiple storage media from a front side to a rear side direction of the storage subsystem, and the first controller and the second controller are mounted in parallel behind the multiple storage media; the first FAN and the second FAN are provided to the rear side of the storage subsystem such that heat generated at the storage subsystem is discharged from the rear side of the storage subsystem; the first controller sets a higher temperature of the temperatures measured via the first temperature sensor and the second temperature sensor as a first temperature information, the second controller sets a higher temperature of the temperatures measured via the third temperature sensor and the fourth temperature sensor as a second temperature information, and the first controller or the second controller determines a rotational speed of the FAN based on the temperature information with larger value among the first temperature information and the second temperature information, and rotates the first FAN and the second FAN at the determined rotational speed of the FAN.