Controlling fan speed based on hard disk assembly position

Patent metadata

Field	Value
Publication number	US-10522191-B2
Application number	US-201715711020-A
Country	US
Kind code	B2
Filing date	Sep 21, 2017
Priority date	Sep 23, 2016
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

Abstract

Embodiments of the present disclosure provide a method for managing a storage device and a storage device, the storage device including a chassis and a hard disk assembly. The method comprises: receiving a signal indicating a position of the hard disk assembly relative to the chassis, the hard disk assembly being slidably coupled to the chassis, and the signal being generated by an electromechanical element disposed on the hard disk assembly; and controlling a rotating speed of a fan based at least in part on the signal, the fan being disposed in the chassis and configured to blow wind to the hard disk assembly.

First claim

We claim:

1. A method for managing a storage device, the storage device including a chassis and a hard disk assembly, the method comprising:
receiving a signal indicating a position of the hard disk assembly relative to the chassis, the hard disk assembly being slidably coupled to the chassis, and the signal being generated by an electromechanical element disposed on the hard disk assembly; and
controlling a rotating speed of a fan based at least in part on the signal, the fan being disposed within the chassis and configured to blow wind to the hard disk assembly;

wherein the controlling comprises:
in response to the signal indicating that the hard disk assembly is located within a predetermined position range, comparing a temperature of hard disks in the hard disk assembly with a target temperature; and
performing proportion-integration-differentiation (PID) control on the rotating speed of the fan based on a result of comparing the temperature of the hard disks and the target temperature.

2. The method according to claim 1 , wherein the controlling further comprises:
in response to the signal indicating that the hard disk assembly is located beyond the predetermined position range, comparing a temperature at a wind inlet side of the hard disk assembly with a first threshold; and
in response to the temperature at the wind inlet side being higher than the first threshold, adjusting the rotating speed of the fan to a first predetermined rotating speed, the first predetermined rotating speed being higher than the rotating speed of the fan when the hard disk assembly is located within the predetermined position range.

3. The method according to claim 2 , wherein the controlling further comprises:
in response to the temperature at the wind inlet side being lower than or equal to the first threshold, comparing the temperature of the hard disks with a second threshold, the second threshold being higher than the first threshold; and
in response to the temperature of the hard disks being higher than the second threshold, adjusting the rotating speed of the fan to a second predetermined rotating speed, the second predetermined rotating speed being higher than the rotating speed of the fan when the hard disk assembly is located within the predetermined position range and being lower than the first predetermined rotating speed.

4. The method according to claim 3 , wherein the controlling further comprises:
in response to the temperature of the hard disks being lower than or equal to the second threshold, comparing the temperature of the hard disks with the target temperature; and
performing the PID control on the rotating speed of the fan based on a result of comparing the temperature of the hard disks and the target temperature.

5. The method according to claim 1 , wherein the controlling further comprises:
in response to the signal indicating that the hard disk assembly is located beyond the predetermined position range, generating an alarm signal.

6. The method according to claim 1 , further comprising:
in response to the signal indicating that at least a part of hard disks in the hard disk assembly is located outside of the chassis, migrating key data stored in the hard disks outside of the chassis to the hard disks within the chassis.

7. The method according to claim 1 , the electromechanical element includes a plurality of elastic buttons.

8. The method according to claim 7 , wherein the hard disk assembly includes a hard disk drawer and a plurality of circuit boards, the plurality of circuit boards being arranged in the hard disk drawer at intervals for inserting hard disks, and
wherein the plurality of elastic buttons are arranged on a side wall of the hard disk drawer and electrically connected to corresponding circuit boards.

9. A method for managing a storage device, the storage device including a chassis and a hard disk assembly, the method comprising:
receiving a signal indicating a position of the hard disk assembly relative to the chassis, the hard disk assembly being slidably coupled to the chassis, and the signal being generated by an electromechanical element disposed on the hard disk assembly; and
controlling a rotating speed of a fan based at least in part on the signal, the fan being disposed within the chassis and configured to blow wind to the hard disk assembly;

wherein the controlling comprises:
in response to the signal indicating that the hard disk assembly is drawn out of the chassis, increasing the rotating speed of the fan; and
in response to the signal indicating that the hard disk assembly is pushed into the chassis, decreasing the rotating speed of the fan.

10. A storage device comprising:
a chassis;
a hard disk assembly being slidably coupled to the chassis and having an electromechanical element disposed thereon, the electromechanical element being configured to generate a signal indicating a position of the hard disk assembly relative to the chassis;
a fan disposed in the chassis and configured to blow wind to the hard disk assembly; and
a processor configured to:
receive the signal; and
control a rotating speed of the fan based at least in part on the signal;

wherein the processor is further configured to:
in response to the signal indicating that the hard disk assembly is located within a predetermined position range, compare a temperature of hard disks in the hard disk assembly with a target temperature; and
perform proportion-integration-differentiation (PID) control on the rotating speed of the fan based on a result of comparing the temperature of the hard disks and the target temperature.

11. The storage device according to claim 10 , wherein the processor is further configured to:
in response to the signal indicating that the hard disk assembly is located beyond the predetermined position range, compare a temperature at a wind inlet side of the hard disk assembly with a first threshold; and
in response to the temperature at the wind inlet side being higher than the first threshold, adjust the rotating speed of the fan to a first predetermined rotating speed, the first predetermined rotating speed being higher than the rotating speed of the fan when the hard disk assembly is located within the predetermined position range.

12. The storage device according to claim 11 , wherein the processor is further configured to:
in response to the temperature at the wind inlet side being lower than or equal to the first threshold, compare the temperature of the hard disks with a second threshold, the second threshold being higher than the first threshold; and
in response to the temperature of the hard disks being higher than the second threshold, adjust the rotating speed of the fan to a second predetermined rotating speed, the second predetermined rotating speed being higher than the rotating speed of the fan when the hard disk assembly is located within the predetermined position range and being lower than the first predetermined rotating speed.

13. The storage device according to claim 12 , wherein the processor is further configured to:
in response to the temperature of the hard disks being lower than or equal to the second threshold, compare the temperature of the hard disks with the target temperature; and
perform the PID control on the rotating speed of the fan based on a result of comparing the temperature of the hard disks and the target temperature.

14. The storage device according to claim 10 , wherein the processor is further configured to:
in response to the signal indicating that the hard disk assembly is located beyond the predetermine

Assignees

• Emc Ip Holding Co Llc

Inventors

• Zhai Haifang
• Zhou Yujie
• Wu Hendry Xiaoping
• Dong David
• Guo Qingqiang

Classifications

• G11B33/144 Primary

  by detection, control, regulation of the temperature · CPC title

• G11B33/142 Primary

  by air cooling · CPC title

• G11B33/125

  the apparatus comprising a plurality of recording/reproducing devices, e.g. modular arrangements, arrays of disc drives · CPC title

• G06F1/20

  Cooling means · CPC title

• G11B33/128

  of the plurality of recording/reproducing devices, e.g. disk drives, onto a chassis · CPC title