SELECTING STORAGE LOCATION FOR FILE STORAGE BASED ON STORAGE LONGEVITY AND SPEED

• US 20090132621A1
• Filed: 01/06/2009
• Published: 05/21/2009
• Est. Priority Date: 07/28/2006
• Status: Abandoned Application

• Current Assignee: Condusiv Technologies Corporation
• Original Assignee: Condusiv Technologies Corporation
• Inventors: Quan, Gary, Jensen, Craig, Thomas, Basil
• Application Number:
  US12/349,457
• Publication Number:
  US 20090132621A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 16/185 Hierarchical storage management [HSM] systems, e.g. file migration or policies thereof details of archiving G06F16/11
• CPC Class Codes: G06F 3/061 Improving I/O performance
• CPC Class Codes: G06F 3/0616 in relation to life time, e.g. increasing Mean Time Between Failures [MTBF]
• CPC Class Codes: G06F 3/0643 Management of files
• CPC Class Codes: G06F 3/0644 Management of space entities, e.g. partitions, extents, pools
• CPC Class Codes: G06F 3/0653 Monitoring storage devices or systems
• CPC Class Codes: G06F 3/0673 Single storage device

Abstract

A method for selecting storage locations is provided. The method involves selecting storage locations for file storage by matching the speed and/or longevity of the storage locations with the frequency of access of the file type of the file, or the frequency of access of the file itself. The method allows for optimized usage of storage locations by matching frequently accessed files with higher performing storage locations, storage devices or storage systems.

Claims

1. A computer-implemented method comprising:

obtaining attributes for each of a plurality of storage locations;

obtaining a file and a file type of the file;

obtaining at least one usage statistic associated with the file type, wherein the at least one usage statistic was generated by monitoring usage of files having said file type;

selecting a first storage location of the plurality of storage locations to store the file based on the attributes of the first storage location and the at least one usage statistic associated with the file type of the file; and

causing the file to be stored to the first storage location.

2. The method of claim 1, further comprising:

responsive to termination of a predetermined time period, transferring the file from the first storage location to a second storage location,

wherein the second storage location has a lower performance than the first storage location.

3. The method of claim 1, further comprising:

storing a temporary filler file in each of the plurality of storage locations;

wherein causing the file to be stored to the first storage location comprises;

deleting or resizing the temporary filler file in the first storage location to free the first storage location for storage of the file.

4. The method of claim 1, wherein causing the file to be stored to the first storage location comprises:

receiving instructions from a file system to store the file to a second storage location;

determining that the first storage location is a more suitable location to store the file than the second storage location; and

instructing a storage driver to store the file in the first storage location instead of the second storage location.

5. The method of claim 4, further comprising:

recording that the file intended to be stored in the second storage location is stored in the first storage location.

6. The method of claim 5, further comprising:

receiving a request from the file system to retrieve the file from the second storage location; and

responsive to the request from the file system, retrieving the file from the first storage location.

7. The method of claim 1, further comprising:

wherein the file is obtained from a file system; and

wherein the file type of the file is obtained from a file system filter driver.

8. The method of claim 1, wherein the at least one usage statistic is a write frequency associated with the file type.

9. The method of claim 1, wherein the at least one usage statistic is a read frequency associated with the file type.

10. The method of claim 1, wherein selecting the first storage location based on the attributes of the first storage location comprises selecting the first storage location based on a write speed associated with the first storage location.

11. The method of claim 1, wherein selecting the first storage location based on the attributes of the first storage location comprises selecting the first storage location based on a read speed associated with the first storage location.

12. The method of claim 1, wherein selecting the first storage location based on the attributes of the first storage location comprises selecting the first storage location based on a number-of-writes-before-failure associated with the first storage location.

13. The method of claim 1, wherein selecting the first storage location based on the attributes of the first storage location comprises selecting the first storage location based on a number-of-reads-before-failure associated with the first storage location.

14. The method of claim 1, wherein selecting the first storage location based on the attributes of the first storage location comprises selecting the first storage location based on a number of input/output operations that can be performed per second (IOPS) at the first storage location.

15. The method of claim 1, wherein the plurality of storage locations are comprised in one or more secondary storage devices separate from a central processing unit.

16. The method of claim 1, wherein selecting a first storage location of the plurality of storage locations to store the file is further based on a relative usage percentage of each of the plurality of storage locations.

17. The method of claim 1, wherein causing the file to be stored to the first storage location comprises transferring the file from a second storage location where the file was originally stored.

18. A computer-implemented method comprising:

obtaining longevity information for each of a plurality of storage locations;

obtaining a file and a frequency of access of the file;

selecting a first storage location of the plurality of storage locations to store the file based on the longevity of the first storage location and the frequency of access of the file; and

causing the file to be stored to the first storage location.

19. The method of claim 18, wherein the first storage location has a relatively higher longevity than the second storage location.

20. The method of claim 18, wherein causing the file to be stored to the first storage location comprises:

receiving instructions from a file system to store the file to a second storage location;

determining that the first storage location is a more suitable location to store the file than the second storage location; and

instructing a storage driver to store the file in the first storage location instead of the second storage location.

21. The method of claim 18, further comprising:

storing a temporary filler file in each of the plurality of storage locations;

wherein causing the file to be stored to the first storage location comprises;

deleting or resizing the temporary filler file in the first storage location to free the first storage location for storage of the file.

22. A computer-implemented method comprising:

storing a temporary filler file in each of the plurality of storage locations;

selecting a storage location of the plurality of storage locations to store a file;

causing the file to be stored in the storage location of the plurality of storage locations by;

deleting or resizing the temporary filler file from the storage location of the plurality of storage locations; and

subsequently requesting storage of the file.

23. A computer-implemented method comprising:

receiving instructions from a file system to store the file to a first storage location;

determining that a second storage location is a more suitable location to store the file than the second storage location;

instructing a storage driver to store the file in the second storage location instead of the first storage location;

recording that the file intended to be stored in the first storage location is stored in the second storage location;

receiving a request from the file system to retrieve the file from the first storage location; and

responsive to the request from the file system to retrieve the file from the first storage location, retrieving the file from the second storage location.

24. A computer readable storage medium comprising one or more sequences of instructions, which when executed by one or more processors cause:

obtaining attributes for each of a plurality of storage locations;

obtaining a file and a file type of the file;

obtaining at least one usage statistic associated with the file type, wherein the at least one usage statistic was generated by monitoring usage of files having said file type;

selecting a first storage location of the plurality of storage locations to store the file based on the attributes of the first storage location and the at least one usage statistic associated with the file type of the file; and

causing the file to be stored to the first storage location.

25. The computer readable storage medium of claim 24, wherein the one or more sequences executed by the one or more processors further cause:

responsive to termination of a predetermined time period, transferring the file from the first storage location to a second storage location,

wherein the second storage location has a lower performance than the first storage location.

26. The computer readable storage medium of claim 24, wherein the one or more sequences executed by the one or more processors further cause:

storing a temporary filler file in each of the plurality of storage locations;

wherein causing the file to be stored to the first storage location comprises;

deleting or resizing the temporary filler file in the first storage location to free the first storage location for storage of the file.

27. The computer readable storage medium of claim 24, wherein causing the file to be stored to the first storage location comprises:

receiving instructions from a file system to store the file to a second storage location;

determining that the first storage location is a more suitable location to store the file than the second storage location; and

instructing a storage driver to store the file in the first storage location instead of the second storage location.

28. The computer readable storage medium of claim 27, wherein the one or more sequences executed by the one or more processors further cause:

recording that the file intended to be stored in the second storage location is stored in the first storage location.

29. The computer readable storage medium of claim 28, wherein the one or more sequences executed by the one or more processors further cause:

receiving a request from the file system to retrieve the file from the second storage location; and

responsive to the request from the file system, retrieving the file from the first storage location.

30. The computer readable storage medium of claim 24, wherein the one or more sequences executed by the one or more processors further cause:

wherein the file is obtained from a file system; and

wherein the file type of the file is obtained from a file system filter driver.

31. The computer readable storage medium of claim 24, wherein the at least one usage statistic is a write frequency associated with the file type.

32. The computer readable storage medium of claim 24, wherein the at least one usage statistic is a read frequency associated with the file type.

33. The computer readable storage medium of claim 24, wherein selecting the first storage location based on the attributes of the first storage location comprises selecting the first storage location based on a write speed associated with the first storage location.

34. The computer readable storage medium of claim 24, wherein selecting the first storage location based on the attributes of the first storage location comprises selecting the first storage location based on a read speed associated with the first storage location.

35. The computer readable storage medium of claim 24, wherein selecting the first storage location based on the attributes of the first storage location comprises selecting the first storage location based on a number-of-writes-before-failure associated with the first storage location.

36. The computer readable storage medium of claim 24, wherein selecting the first storage location based on the attributes of the first storage location comprises selecting the first storage location based on a number-of-reads-before-failure associated with the first storage location.

37. The computer readable storage medium of claim 24, wherein selecting the first storage location based on the attributes of the first storage location comprises selecting the first storage location based on a number of input/output operations that can be performed per second (IOPS) at the first storage location.

38. The computer readable storage medium of claim 24, wherein the plurality of storage locations are comprised in one or more secondary storage devices separate from a central processing unit.

39. The computer readable storage medium of claim 24, wherein selecting a first storage location of the plurality of storage locations to store the file is further based on a relative usage percentage of each of the plurality of storage locations.

40. The computer readable storage medium of claim 24, wherein causing the file to be stored to the first storage location comprises transferring the file from a second storage location where the file was originally stored.

41. A computer readable storage medium comprising one or more sequences of instructions, which when executed by one or more processors cause:

obtaining longevity information for each of a plurality of storage locations;

obtaining a file and a frequency of access of the file;

selecting a first storage location of the plurality of storage locations to store the file based on the longevity of the first storage location and the frequency of access of the file; and

causing the file to be stored to the first storage location.

42. The computer readable storage medium of claim 41, wherein the first storage location is within a rotating platter drive and a second storage location that was not selected for storage of the file is within a solid state drive, wherein the rotating platter drive has a relatively higher longetivity than the solid state drive.

43. The computer readable storage medium of claim 41, wherein causing the file to be stored to the first storage location comprises:

receiving instructions from a file system to store the file to a second storage location;

determining that the first storage location is a more suitable location to store the file than the second storage location; and

instructing a storage driver to store the file in the first storage location instead of the second storage location.

44. The computer readable storage medium of claim 41, wherein the one or more sequences executed by the one or more processors further cause:

storing a temporary filler file in each of the plurality of storage locations;

wherein causing the file to be stored to the first storage location comprises;

deleting or resizing the temporary filler file in the first storage location to free the first storage location for storage of the file.

45. A computer readable storage medium comprising one or more sequences of instructions, which when executed by one or more processors cause:

storing a temporary filler file in each of the plurality of storage locations;

selecting a storage location of the plurality of storage locations to store a file;

causing the file to be stored in the storage location of the plurality of storage locations by;

deleting or resizing the temporary filler file from the storage location of the plurality of storage locations; and

subsequently requesting storage of the file.

46. A computer readable storage medium comprising one or more sequences of instructions, which when executed by one or more processors cause:

receiving instructions from a file system to store the file to a first storage location;

determining that a second storage location is a more suitable location to store the file than the first storage location;

instructing a storage driver to store the file in the second storage location instead of the first storage location;

recording that the file intended to be stored in the first storage location is stored in the second storage location;

receiving a request from the file system to retrieve the file from the first storage location; and

responsive to the request from the file system to retrieve the file from the first storage location, retrieving the file from the second storage location.