Systems and methods for restoring data from network attached storage

Patent metadata

Field	Value
Publication number	US-9400803-B2
Application number	US-201514734282-A
Country	US
Kind code	B2
Filing date	Jun 9, 2015
Priority date	Dec 18, 2006
Publication date	Jul 26, 2016
Grant date	Jul 26, 2016

Abstract

A system and method for communicating, browsing, verifying and routing data in storage operation systems using network attached storage devices is provided. In some embodiments, the system may include a management module and a media management component connected to the management server, which interoperate with network attached storage devices to provide the communicating, browsing, verifying and routing functions.

First claim

What is claimed is:

1. A method for managing data in a storage system, the method comprising:
receiving at a media agent component comprising computer hardware, a request to restore at least one requested data file from a Network-Attached Storage (NAS) Device, wherein the at least one requested data file is restored to a first storage device with a first file management system, and the Network-Attached Storage (NAS) Device comprises a second file management system that is different than the first file management system;
directing with the media agent, a file processor to retrieve a data structure from the Network-Attached Storage (NAS) Device, wherein a first data structure is retrieved with the second file management system, the first data structure comprising at least a header, a chunk of data, and a trailer, the header comprising at least a set of file markers that identify a plurality of data files in a chunk of data in the data structure, the trailer comprising at least metadata about the plurality of data files in the chunk of data;
obtaining, with the file processor, the at least one requested data file based at least in part on accessing the set of file markers in the header and metadata in the trailer to identify the location of the requested data file in the chunk of data; and
restoring the at least one requested data file to the first storage device with the first file management system by transferring the at least one requested data files to the media agent.

2. The method of claim 1 wherein the data structure retrieved from the Network-Attached Storage (NAS) Device is verified by comparing the data structure to an index associated with the media agent.

3. The method of claim 1 wherein a file server receives the data structure from the Network-Attached Storage (NAS) Device via a first network protocol and restores the requested data file to the first storage device via a second network protocol.

4. The method of claim 3 wherein the first network protocol is a Network Data Management Protocol.

5. The method of claim 1 wherein the trailer further comprises a second set of set of file markers that identify the plurality of data files in the chunk of data.

6. The method of claim 1 further comprising browsing the plurality of files in the chunk of data.

7. The method of claim 1 , further comprising reconstructing an index cache with at least the metadata in the trailer.

8. The method of claim 1 , further comprising identifying the data structure stored on the Network-Attached Storage (NAS) Device based on index data associated with the media agent of a storage manager.

9. The method of claim 1 , further comprising determining whether the data structure stored on the Network-Attached Storage (NAS) Device is part of an incremental backup of the at least one requested data file.

10. The method of claim 1 , further creating an index that identifies the path of the data structure on Network-Attached Storage (NAS) Device that contains the at least one requested data file.

11. A system for managing data in a storage system, the system comprising:
a first storage device that stores multiple data files with a first file management system;
a media agent component comprising computer hardware that receives a request to restore at least one requested data file from a Network-Attached Storage (NAS) Device to the storage device, and the Network-Attached Storage (NAS) Device comprises a second file management system that is different than the first file management system;
a file server comprising computer hardware that is remotely located from a Network-Attached Storage (NAS) Device, the file server in communication with the media agent, the file server configured to:
retrieve a data structure from the Network-Attached Storage (NAS) Device, wherein a first data structure is retrieved with the second file management system, the first data structure comprising at least a header, a chunk of data, and a trailer, the header comprising at least a set of file markers that identify a plurality of data files in a chunk of data in the data structure, the trailer comprising at least metadata about the plurality of data files in the chunk of data;
obtain the at least one requested data file based at least in part on accessing the set of file markers in the header and metadata in the trailer to identify the location of the requested data file in the chunk of data; and
restore the at least one requested data file to the first storage device with the first file management system by transferring the at least one requested data file to the media agent.

12. The system of claim 11 further comprising a verification component comprising computer hardware that verifies the data structure retrieved from the Network-Attached Storage (NAS) Device by comparing the data structure to an index associated with the media agent.

13. The system of claim 11 wherein the file server receives the data structure from the Network-Attached Storage (NAS) Device via a first network protocol and restores the requested data file to the first storage device via a second network protocol.

14. The system of claim 13 wherein the first network protocol is a Network Data Management Protocol.

15. The system of claim 11 wherein the trailer further comprises a second set of set of file markers that identify the plurality of data files in the chunk of data.

16. The system of claim 11 wherein the media agent is in communication with a browsing component that browses the plurality of files in the chunk of data by accessing information.

17. The system of claim 11 , wherein the media agent is further configured to reconstruct an index cache with at least the metadata in the trailer.

18. The system of claim 11 , further comprising identifying the data structure stored on the Network-Attached Storage (NAS) Device based on index data associated with the media agent or a storage manager.

19. The system of claim 11 , wherein the media agent determines whether the data structure stored on the Network-Attached Storage (NAS) Device is part of an incremental backup of the at least one requested data file.

20. The system of claim 11 , wherein the media agent creates an index associated that identifies the path of the data structure on Network-Attached Storage (NAS) Device that contains the at least one requested data file.

Assignees

• Commvault Systems Inc

Inventors

• Littlefield Duncan
• Chen Ho-Chi
• Kottomtharayil Rajiv

Classifications

• G06F17/302 Primary

  Physics · mapped topic

• G06F2201/80

  Database-specific techniques · CPC title

• G06F11/1464 Primary

  for networked environments · CPC title

• G06F17/30126

  Physics · mapped topic

• H04L67/1097

  for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS] · CPC title