RECOVERY OF TENANT DATA ACROSS TENANT MOVES

• US 20120254118A1
• Filed: 03/31/2011
• Published: 10/04/2012
• Est. Priority Date: 03/31/2011
• Status: Abandoned Application

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Shah, Siddharth Rajendra, Voronkov, Nikita, Taranov, Viktoriya, Blood, Daniel, Da Silva, Antonio Marco Jr.
• Application Number:
  US13/077,620
• Publication Number:
  US 20120254118A1
• Time in Patent Office: Days
• US Class Current: 707/645
• CPC Class Codes: G06F 11/1448 Management of the data involved in backup or backup restore
• CPC Class Codes: G06F 11/1464 for networked environments
• CPC Class Codes: G06F 11/1469 Backup restoration techniques

Abstract

A history of locations of tenant data is maintained. The tenant data comprises data that is currently being used by the tenant and the corresponding backup data. When a tenant'"'"'s data is changed from one location to another, a location and a time is stored within the history that may be accessed to determine a location of the tenant'"'"'s data at a specified time. Different operations trigger a storing of a location/time within the history. Generally, an operation that changes a location of the tenant'"'"'s data triggers the storing of the location within the history (e.g. upgrade of farm, move of tenant, adding a tenant, load balancing of the data, and the like). When tenant data is needed for an operation (e.g. restore), the history may be accessed to determine the location of the data.

Claims

1. A method for recovering tenant data across tenant moves, comprising:

determining an operation that changes a location of a tenant'"'"'s data;

in response to the operation that changes the location of the tenant'"'"'s data, updating a history of the tenant'"'"'s data by adding a current location of the tenant'"'"'s data; and

when requested, accessing the history to determine a previous location of the tenant'"'"'s data.

2. The method of claim 1, wherein the history is updated in response to a load balancing of at least one of:

tenant data and backup data.

3. The method of claim 1, wherein the history is updated in response to a tenant move.

4. The method of claim 1, wherein the history is updated in response to a farm upgrade.

5. The method of claim 1, wherein updating the history comprises storing a location of backup data that corresponds to the tenant'"'"'s data.

6. The method of claim 5, wherein the backup data comprises a full backup of the tenant'"'"'s data and incremental backups of the tenant'"'"'s data and transaction log backups of the tenant'"'"'s data.

7. The method of claim 1, wherein updating the history comprises including a time indicating when the tenant'"'"'s data is moved from the previous location the current location.

8. The method of claim 7, further comprising determining the previous location of the tenant'"'"'s data by accessing the location based upon a comparison of a specified time with the time within the history.

9. The method of claim 1, further comprising restoring the data to a temporary location and extracting requested data from the temporary location and placing the extracted data into the current location of the tenant'"'"'s data.

10. A computer-readable storage medium storing computer-executable instructions for recovering tenant data across tenant moves, comprising:

determining an operation that changes a location of a tenant'"'"'s data;

updating a history of the tenant'"'"'s data to include a current location of the tenant'"'"'s data, wherein the history includes a record for each location at which the tenant'"'"'s data has been stored and the current location, wherein each record comprises a tenant data location, a backup location for the tenant data, and time information indicating when the data was at each of the locations; and

when requested, accessing the history to determine a previous location of the tenant'"'"'s data.

11. The computer-readable storage medium of claim 10, wherein the history is updated in response to at least one of:

a load balancing on at least one of;

tenant data and backup data;

a tenant move; and

a farm upgrade.

12. The computer-readable storage medium of claim 10, further comprising providing each location of the backup of tenant'"'"'s data in response to the request.

13. The computer-readable storage medium of claim 12, wherein the backup data comprises a full backup of the tenant'"'"'s data, incremental backups of the tenant'"'"'s data, and transaction log data.

14. The computer-readable storage medium of claim 10, wherein updating the history comprises including a time indicating when the tenant'"'"'s data is moved from the previous location to the current location.

15. The computer-readable storage medium of claim 14, further comprising determining the previous location of the tenant'"'"'s data by accessing the location based upon a comparison of a specified time with the time within the history.

16. The computer-readable storage medium of claim 10, further comprising restoring the data to a temporary location and extracting requested data from the temporary location and placing the extracted data into the current location of the tenant'"'"'s data.

17. A system for recovering tenant data across tenant moves, comprising:

a network connection that is configured to connect to a network;

a processor, memory, and a computer-readable storage medium;

an operating environment stored on the computer-readable storage medium and executing on the processor;

a data store storing tenant data that is associated with different tenants; and

a backup manager operating that is configured to perform actions comprising;

receiving a request for a tenant'"'"'s data;

accessing a history of tenant data locations to determine a location of the requested tenant data, wherein the history includes a record for each location at which the tenant'"'"'s data has been stored and the current location, wherein the record comprises a tenant data location, a backup location for the tenant data, and time information indicating when the data was at each of the locations.

18. The system of claim 17, further comprising comparing a time specified within the request to determine the location of the requested tenant data.

19. The system of claim 17, further comprising examining each location within the history to determine the location of the requested tenant data.

20. The system of claim 17, further comprising restoring the tenant'"'"'s data to a temporary location and extracting the requested data from the temporary location and placing the extracted data into the current location of the tenant'"'"'s data.