Systems and methods for information backup

• US 8,370,450 B2
• Filed: 05/18/2009
• Issued: 02/05/2013
• Est. Priority Date: 07/06/2001
• Status: Expired due to Fees

• Current Assignee: CA, Inc. (d/b/a CA Technologies) (Broadcom, Inc.)
• Original Assignee: CA, Inc. (d/b/a CA Technologies) (Broadcom, Inc.)
• Inventors: Venkatasubramanian, Krishnan
• Primary Examiner(s): BARQADLE, YASIN M
• Application Number:
  US12/467,695
• Publication Number:
  US 20100132022A1
• Time in Patent Office: 1,359 Days
• Field of Search: 709/203, 709213-227, 707644-653, 713/2, 714/4.11, 714/6.3, 714 11- 13
• US Class Current: 709/216
• CPC Class Codes: G06F 11/1456 Hardware arrangements for backup
• CPC Class Codes: G06F 11/1458 Management of the backup or restore process
• CPC Class Codes: G06F 11/1461 Backup scheduling policy
• CPC Class Codes: G06F 11/1464 for networked environments
• CPC Class Codes: G06F 11/1469 Backup restoration techniques
• CPC Class Codes: G06F 11/2056 by mirroring
• CPC Class Codes: G06F 2003/0697 device management, e.g. handlers, drivers, I/O schedulers
• CPC Class Codes: G06F 2201/84 Using snapshots, i.e. a logical point-in-time copy of the data
• CPC Class Codes: G06F 3/0601 Interfaces specially adapted for storage systems
• CPC Class Codes: Y10S 707/99938 Concurrency, e.g. lock management in shared database
• CPC Class Codes: Y10S 707/99953 Recoverability
• CPC Class Codes: Y10S 707/99955 Archiving or backup

Abstract

A system for granting or denying access to nodes on a network, includes a first node including a list of nodes that can be granted or denied access to the first node, and at least one other node. The first node and the at least one other node are connected across the network. When the at least one other node attempts to gain access to the first node, the first node reviews the list of nodes to determine whether access should be granted or denied to the at least one other node.

Claims

1. A system for information backup, comprising;

a plurality of backup servers operable to retrieve backup data from a plurality of nodes;

a plurality of backup storage devices operable to store the backup data retrieved from the plurality of nodes; and

a high-speed, storage area network coupling the plurality of backup servers to the plurality of backup storage devices; and

wherein each of the plurality of backup servers is further operable to;

locally maintain an internal table storing state information identifying a state of each of the plurality of backup storage devices;

check the internal table to determine based on the state information that a particular one of the plurality of backup storage devices is not locked by any other of the plurality of backup servers before initiating a change of state in the particular one of the plurality of backup storage devices; and

share any change of state in the particular backup storage device with every other of the plurality of backup servers, wherein each of the plurality of backup servers maintain up to date state information for all remotely located backup storage devices.

2. The system of claim 1, wherein each of the plurality of backup servers are further operable to:

request a global lock from a primary server within the plurality of backup servers before initiating a change of state in the particular backup storage device; and

initiate the change of state in the particular backup storage device in response to receiving the global lock.

3. The system of claim 1, wherein each one of the plurality of nodes comprises an agent operable to control access to data on the respective one of the nodes, the agent using a list of backup servers that are permitted to backup data on the respective one of the plurality of nodes.

4. The system as recited in claim 3, wherein the list of backup servers is modified by locally logging into the first node.

5. The system of claim 1, wherein, when a first one of the plurality of backup servers is identified on the list of backup servers, a user of the backup server is prompted for a user identification and a password for accessing the first one of the plurality of nodes.

6. The system as recited in claim 1, wherein the plurality of nodes comprise a plurality of servers.

7. The system as recited in claim 1, further comprising a Local Area Network (LAN) connecting the plurality of nodes with the plurality of backup servers.

8. The system as recited in claim 1, wherein each of the plurality of backup servers is operable to store, on the particular backup storage device, back up data for a plurality of nodes.

9. The system of claim 1, wherein the state information stored in the internal table identifies whether each of the plurality of backup storage devices has been locked by any other of the plurality of backup servers.

10. A system for information backup, comprising:

a plurality of backup servers operable to retrieve backup data from a plurality of nodes; and

a plurality of backup storage devices in communication with the plurality of backup servers, the plurality of backup storage devices storing the backup data retrieved from the plurality of nodes;

wherein each of the plurality of backup servers are operable to locally maintain an internal table storing state information identifying a state of each of the plurality of backup storage devices, check the internal table to determine based on the state information that a particular one of the plurality of backup storage devices is not locked by any other of the plurality of backup servers before initiating a change of state in the particular one of the plurality of backup storage devices, share any change of state in the particular backup storage device with every other of the plurality of backup servers; and

wherein each of the plurality of backup servers is assigned to one of a plurality of server groups, each server group comprising;

a primary server operable to control the flow of information between every other server in the server group, wherein each of the plurality of backup servers maintains up to date state information for all remotely located backup storage devices; and

at least one distributed server operable to receive information from the primary server.

11. The system of claim 10, wherein each of the plurality of backup servers are further operable to:

request a global lock from the primary server before initiating a change of state in the particular backup storage device; and

initiate the change of state in the particular backup storage device in response to receiving the global lock.

12. The system of claim 10, wherein each one of the plurality of nodes comprises an agent operable to control access to data on the respective one of the nodes, the agent using a list of backup servers that are permitted to backup data on the respective one of the plurality of nodes.

13. The system of claim 10, wherein, when a first one of the plurality of backup servers is identified on the list of backup servers, a user of the backup server is prompted for a user identification and a password for accessing the first one of the plurality of nodes.

14. The system as recited in claim 13, wherein the list of backup servers is modified by locally logging into the first node.

15. The system as recited in claim 10, wherein the plurality of nodes comprise a plurality of servers.

16. The system as recited in claim 10, further comprising a Local Area Network (LAN) connecting the plurality of nodes with the plurality of backup servers.

17. The system as recited in claim 10, further comprising a high-speed, storage area network coupling the plurality of backup servers to the plurality of backup storage devices.

18. The system as recited in claim 10, wherein each of the plurality of backup servers is operable to store, on the particular backup storage device, back up data for a plurality of nodes.

19. The system of claim 10, wherein the state information stored in the internal table identifies whether each of the plurality of backup storage devices has been locked by any other of the plurality of backup servers.

20. A method for information backup, comprising;

providing a plurality of backup servers operable to retrieve backup data from a plurality of nodes;

providing a plurality of backup storage devices operable to store the backup data retrieved from the plurality of nodes;

coupling the plurality of backup servers to the plurality of backup storage devices with a high-speed, storage area network;

locally maintaining, at each of the plurality of backup servers, an internal table storing state information identifying a state of each of the plurality of backup storage devices;

checking the internal table to determine based on the state information that a particular one of the plurality of backup storage devices is not locked by any other of the plurality of backup servers before initiating a change of state in the particular one of the plurality of backup storage devices; and

sharing any change of state in the particular backup storage device with every other of the plurality of backup servers wherein each of the plurality of backup servers maintain up to date state information for all remotely located backup storage devices.

21. The method of claim 20, further comprising:

requesting a global lock from a primary server within the plurality of backup servers before initiating a change of state in the particular backup storage device; and

initiating the change of state in the particular backup storage device in response to receiving the global lock.

22. The method of claim 20, further comprising:

providing an agent on each one of the plurality of nodes, the agent operable to control access to data on the respective one of the nodes, the agent operable to use a list of backup servers on the that are permitted to backup data on the respective one of the plurality of nodes.

23. The method of claim 20, further comprising:

when a first one of the plurality of backup servers is identified on the list of backup servers, prompting a user of the backup server for a user identification and a password for accessing the first one of the plurality of nodes.

24. The method as recited in claim 23, wherein the list of backup servers is modified by locally logging into the first node.

25. The method as recited in claim 20, wherein the plurality of nodes comprise a plurality of servers.

26. The method as recited in claim 20, further comprising:

providing a Local Area Network (LAN) connecting the plurality of nodes with the plurality of backup servers.

27. The method of claim 20, wherein the state information stored in the internal table identifies whether each of the plurality of backup storage devices has been locked by any other of the plurality of backup servers.