Data recovery scheme based on data backup status

Patent metadata

Field	Value
Publication number	US-9286163-B2
Application number	US-201313740297-A
Country	US
Kind code	B2
Filing date	Jan 14, 2013
Priority date	Jan 14, 2013
Publication date	Mar 15, 2016
Grant date	Mar 15, 2016

Abstract

Machines, systems and methods for increasing data resiliency in a computing system, the method comprising distinguishing between first data and second data stored in one or more data storage mediums, wherein the first data is more vulnerable than the second data for the purpose of recovering lost data; and recovering the first data before recovering the second data. Increasing redundancy protection for the first data to increase chances for data recovery by way of data reconstruction; and decreasing redundancy protection for the first data, after the first data has been backed up at least once.

First claim

What is claimed is:

1. A method for increasing data resiliency in a computing system, the method comprising:
distinguishing between first data and second data stored in one or more data storage mediums, the distinguishing based on the first data being more vulnerable than the second data for the purpose of recovering lost data;
increasing, based on the distinguishing between the first data and the second data, redundancy protection for the first data to increase chances for data recovery by way of data reconstruction;
detecting a data failure affecting the first data and the second data;
recovering, based on the distinguishing between the first data and the second data and in response to the detecting the data failure, the first data prior to recovering the second data;
identifying tracked changes to data;
applying, in response to identifying the tracked changes, an increased data resiliency scheme to the tracked changes;
determining the tracked changes have been backed up; and
applying, in response to the determining the tracked changes have been backed up, a decreased data resiliency scheme to the tracked changes.

2. The method of claim 1 , wherein the second data is less vulnerable than the first data, due to the second data having been backed up more times than the first data.

3. The method of claim 1 , wherein the redundancy protection for the first data is increased by way of creating additional copies of the first data.

4. The method of claim 1 , wherein the redundancy protection for the first data is increased by way of associating additional parity information with the first data.

5. The method of claim 1 , wherein the distinguishing between the first data and the second data comprises determining that the first data has been backed up at least once.

6. The method of claim 1 , wherein the first data is recovered using data reconstruction.

7. A method for increasing data resiliency in a computing system, the method comprising:
distinguishing between first data and second data stored in one or more data storage mediums, the distinguishing based on the first data being more vulnerable than the second data for the purpose of recovering lost data;
increasing, based on the distinguishing between the first data and the second data, redundancy protection for the first data to increase chances for data recovery by way of data reconstruction;
detecting a data failure affecting third data and fourth data;
determining, in response to the detecting the data failure, the third data is more vulnerable than the fourth data for the purpose of recovering lost data;
recovering, based on the determining the third data is more vulnerable than the fourth data, the third data prior to recovering the fourth data:,
identifying tracked changes to data;
applying, in response to identifying the tracked changes, an increased data resiliency scheme to the tracked changes;
determining the tracked changes have been backed up; and
applying, in response to the determining the tracked changes have been backed up, a decreased data resiliency scheme to the tracked changes.

8. The method of claim 7 , wherein the distinguishing between the first data and the second data comprises determining that the first data has been backed up at least once.

9. The method of claim 7 , wherein the redundancy protection for the first data is increased by way of associating additional parity information with the first data.

10. A system for increasing data resiliency in a computing system, the system comprising:
a processor, a computer readable storage medium, and program instructions stored on the storage medium for execution by the processor, the program instructions configured to cause the system to perform a method, the method comprising:
distinguishing between first data and second data stored in one or more data storage mediums, the distinguishing based on the first data being more vulnerable than the second data for the purpose of recovering lost data;
increasing, based on the distinguishing between the first data and the second data, redundancy protection for the first data to increase chances for data recovery by way of data reconstruction;
detecting a data failure affecting the first data and the second data;
recovering, based on the distinguishing between the first data and the second data and in response to the detecting the data failure, the first data prior to recovering the second data;
identifying tracked changes to data;
applying, in response to identifying the tracked changes, an increased data resiliency scheme to the tracked changes;
determining the tracked changes have been backed up; and
applying, in response to the determining the tracked changes have been backed up, a decreased data resiliency scheme to the tracked changes.

11. The system of claim 10 , wherein the second data is less vulnerable than the first data, due to the second data having been backed up more times than the first data.

12. The system of claim 10 , wherein the redundancy protection for the first data is increased by way of creating additional copies of the first data.

13. The system of claim 10 , wherein the redundancy protection for the first data is increased by way of associating additional parity information with the first data.

14. The system of claim 10 , wherein the distinguishing between the first data and the second data comprises determining that the first data has been backed up at least once.

15. A computer program product comprising a non-transitory computer readable storage medium having a computer readable program, wherein the computer readable program when executed on a computer causes the computer to:
distinguish between first data and second data stored in one or more data storage mediums, the distinguishing based on the first data being more vulnerable than the second data for the purpose of recovering lost data;
increase, based on the distinguishing between the first data and the second data, redundancy protection for the first data to increase chances for data recovery by way of data reconstruction;
detect a data failure affecting the first data and the second data;
recover, based on the distinguishing between the first data and the second data and in response to the detecting the data failure, the first data prior to recovering the second data;
identify tracked changes to data;
apply, in response to identifying the tracked changes, an increased data resiliency scheme to the tracked changes;
determine the tracked changes have been backed up; and
apply, in response to the determining the tracked changes have been backed up, a decreased data resiliency scheme to the tracked changes.

16. The computer program product of claim 15 , wherein the second data is less vulnerable than the first data, due to the second data having been backed up more times than the first data.

17. The computer program product of claim 15 , wherein the redundancy protection for the first data is increased by way of creating additional copies of the first data.

18. The computer program product of claim 15 , wherein the redundancy protection for the first data is increased by way of associating additional parity information with the first data.

19. The computer program product of claim 15 , wherein the distinguishing between the first data and the second data comprises determining that the first data has been backed up at least once.

Assignees

• IBM

Inventors

• Factor Michael E
• Goldberg Itzhack
• Hirsch Michael
• Kat Ronen I
• Sondhi Neil

Classifications

• G06F11/1451 Primary

  by selection of backup contents · CPC title

• G06F11/1402 Primary

  Saving, restoring, recovering or retrying · CPC title

• G06F11/1092

  Rebuilding, e.g. when physically replacing a failing disk · CPC title

• G06F11/1458

  Management of the backup or restore process · CPC title

• G06F11/2094

  Redundant storage or storage space (G06F11/2056 takes precedence) · CPC title