Control of solid state memory device temperature using queue depth management

Patent metadata

Field	Value
Publication number	US-2015261281-A1
Application number	US-201414207862-A
Country	US
Kind code	A1
Filing date	Mar 13, 2014
Priority date	Mar 13, 2014
Publication date	Sep 17, 2015
Grant date	—

Abstract

Embodiments relate to controlling a temperature of a solid state memory device using queue depth management by monitoring an operating temperature of each of a plurality of solid state drives of the solid state memory device. Based on a determination that the operating temperature of one of the plurality of solid state drives exceeds local device threshold values, the method includes receiving an indication that one or more local measures have been taken by the solid state memory device. Based on a determination that the operating temperature of one of the plurality of solid state drives exceeds a secondary global threshold value, the method includes reducing a queue length for the solid state memory device.

First claim

What is claimed is:

1 . A method for controlling a temperature of a solid state memory device using queue depth management, the method comprising:
monitoring, by a processor, an operating temperature of each of a plurality of solid state drives of the solid state memory device; based on determining that the operating temperature of one of the plurality of solid state drives exceeds a first threshold value, receiving an indication that one or more local measures have been taken by the solid state memory device; and based on determining that the operating temperature of one of the plurality of solid state drives exceeds a second threshold value, reducing a queue length the solid state memory device.

2 . The method of claim 1 , further comprising:
based on determining that the operating temperature of all of the plurality of solid state drives are below the a third threshold value, resuming normal operations of the solid state memory device, wherein the threshold value is less than the first threshold value.

3 . The method of claim 1 , wherein an amount of the reduction of the queue length is based on a rate of change of an ambient temperature of an environment of the solid state memory device.

4 . The method of claim 1 , wherein an amount of the reduction of the queue length is based on a rate of change of the operating temperature of each of a plurality of solid state drives.

5 . The method of claim 1 , wherein the first threshold value is less than the second threshold value.

6 . The method of claim 1 , wherein the second threshold value is less than a warranty limit temperature.

7 . The method of claim 1 , further comprising:
based on determining that the operating temperature of one of the plurality of solid state drives exceeds the second threshold value, generating an alert that the second threshold value was exceeded.

8 . A computer program product for controlling a temperature of a solid state memory device using queue depth management, the computer program product comprising:
a tangible storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising: monitoring an operating temperature of each of a plurality of solid state drives of the solid state memory device; based on determining that the operating temperature of one of the plurality of solid state drives exceeds a first threshold value, receiving an indication that one or more local measures have been taken by the solid state memory device; and based on determining that the operating temperature of one of the plurality of solid state drives exceeds a second threshold value, reducing a queue length the solid state memory device.

9 . The computer program product of claim 8 , wherein the method further comprises:
based on determining that the operating temperature of all of the plurality of solid state drives are below the a third threshold value, resuming normal operations of the solid state memory device, wherein the threshold value is less than the first threshold value.

10 . The computer program product of claim 8 , wherein an amount of the reduction of the queue length is based on a rate of change of an ambient temperature of an environment of the solid state memory device.

11 . The computer program product of claim 8 , wherein an amount of the reduction of the queue length is based on a rate of change of the operating temperature of each of a plurality of solid state drives.

12 . The computer program product of claim 8 , wherein the first threshold value is less than the second threshold value.

13 . The computer program product of claim 8 , wherein the second threshold value is less than a warranty limit temperature.

14 . The computer program product of claim 8 , wherein the method further comprises:
based on determining that the operating temperature of one of the plurality of solid state drives exceeds the second threshold value, generating an alert that the second threshold value was exceeded.

15 . A computer system comprising:
a solid state memory device comprising a plurality of solid state drives; and a host configured to store data on the solid state memory device, wherein the solid state memory device includes a controller configured to perform a method comprising: monitoring an operating temperature of each of the plurality of solid state drives of the solid state memory device; based on determining that the operating temperature of one of the plurality of solid state drives exceeds a first threshold value, receiving an indication that one or more local measures have been taken by the solid state memory device; and based on determining that the operating temperature of one of the plurality of solid state drives exceeds a second threshold value, reducing a queue length for the solid state memory device.

16 . The computer system of claim 15 , wherein the method further comprises:
based on determining that the operating temperature of all of the plurality of solid state drives are below the a third threshold value, resuming normal operations of the solid state memory device, wherein the threshold value is less than the first threshold value.

17 . The computer system of claim 15 , wherein an amount of the reduction of the queue length is based on a rate of change of an ambient temperature of an environment of the solid state memory device.

18 . The computer system of claim 15 , wherein an amount of the reduction of the queue length is based on a rate of change of the operating temperature of each of a plurality of solid state drives.

19 . The computer system of claim 15 , wherein the second threshold value is less than a warranty limit temperature.

20 . The computer system of claim 15 , wherein the method further comprises:
based on determining that the operating temperature of one of the plurality of solid state drives exceeds the second threshold value, transmitting an alert to the host that the second threshold value was exceeded.

Assignees

• IBM

Inventors

• Bickelman Craig A
• Chencinski Edward W
• Greenspan Seth R
• Sciacca M Dean
• Wei Xiaojin

Classifications

• G06F1/3225 Primary

  of memory devices · CPC title

• G06F1/324

  by lowering clock frequency · CPC title

• G06F1/3268

  Power saving in hard disk drive · CPC title

• Y02D10/00

  Energy efficient computing, e.g. low power processors, power management or thermal management · CPC title

• G06F1/206

  comprising thermal management · CPC title