System and method for efficiently supporting multiple native network protocol implementations in a single system

• US 7,797,392 B2
• Filed: 11/26/2002
• Issued: 09/14/2010
• Est. Priority Date: 11/26/2002
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Hsu, Windsor Wee Sun, Young, Honesty Cheng, Menon, Jaishankar Moothedath
• Primary Examiner(s): Follansbee; John
• Assistant Examiner(s): Tran; Nghi V
• Application Number:
  US10/304,660
• Publication Number:
  US 20040103206A1
• Time in Patent Office: 2,849 Days
• Field of Search: 709/203, 709/229, 709/223, 709/213, 709/214, 709/215, 709/216
• US Class Current: 709/213
• CPC Class Codes: H04L 67/1001 for accessing one among a plurality of replicated servers
• CPC Class Codes: H04L 67/10015 Access to distributed or replicated servers, e.g. using brokers
• CPC Class Codes: H04L 67/1008 based on parameters of servers, e.g. available memory or workload monitoring of computer activity G06F11/30
• CPC Class Codes: H04L 67/1012 based on compliance of requirements or conditions with available server resources
• CPC Class Codes: H04L 67/1019 Random or heuristic server selection
• CPC Class Codes: H04L 67/1097 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 Class Codes: H04L 67/63 Routing a service request depending on the request content or context
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]

Abstract

An intelligent router routes a user request to a storage server that is capable of handling that request natively, without emulation. The request is routed automatically, without any instruction or interaction on the part of the user. The intelligent router includes a storage tank-like computing environment and a set of intelligent routers. The set of intelligent routers appears as a single entity to users by presenting a single network IP address. When the intelligent router receives a request, it examines the protocol type and routes the request to one of the appropriate storage tank clients. The intelligent router does not change the contents of the request message, and thus the storage tank system do not become aware of the existence of the intelligent router. Consequently, any return messages do not need to go through the intelligent router, unless desired.

Claims

1. A processor-implemented method for automatically performing protocol-based routing of an input command to access a file using an input protocol, to a file storage client capable of natively servicing the same protocol as the input protocol, comprising:

determining the input protocol of the input message;

identifying a plurality of protocols serviced by a plurality of file storage clients;

comparing the input protocol of the input command to the plurality of protocols serviced by the plurality of file storage clients;

selecting the file storage client that is capable of servicing the same protocol as the input protocol, natively without emulation;

automatically routing the input command to a selected file storage client; and

wherein the file is accessible through any one of the plurality of protocols.

2. The method of claim 1, wherein the plurality of protocols are serviced natively, without emulation.

3. The method of claim 1, wherein at least some of the plurality of protocols are different.

4. The method of claim 1, wherein automatically routing the input command comprises automatically routing the input command without interaction on the part of a user that issues the input command.

5. The method of claim 4, wherein the user comprises a computer program.

6. The method of claim 4, wherein automatically routing the input command comprises using a router system that appears as a single entity to the user.

7. The method of claim 6, wherein automatically routing the input command comprises establishing a connection to a file storage tank client using a single network address.

8. The method of claim 1, wherein if a plurality of file storage clients are determined to service the input protocol, selecting one of the file storage clients.

9. The method of claim 8, wherein selecting one of the file storage clients comprises randomly selecting a file storage client.

10. The method of claim 8, wherein selecting one of the file storage clients comprises selecting the same storage tank client that was last used by a user issuing the input command.

11. The method of claim 8, wherein selecting one of the file storage clients comprises sequentially selecting the file storage client.

12. The method of claim 1, further comprising storing a list of the plurality of protocols serviced by the file storage clients.

13. The method of claim 4, wherein automatically routing the input command comprises automatically routing the input command without changing the input command content.

14. A computer program product having a plurality of executable instruction codes stored on a computer-usable medium, for automatically performing protocol-based routing of an input command to access a file using an input protocol, to a file storage client capable of natively servicing the same protocol as the input protocol, comprising:

a first set of instruction codes that determines the input protocol of the input message;

the first set of instruction codes further identifies a plurality of protocols serviced by a plurality of file storage clients;

a second set of instruction codes that compares the input protocol of the input command to the plurality of protocols serviced by the plurality of file storage clients;

the second set of instruction codes further selects the file storage client that is capable of servicing the same protocol as the input protocol, natively without emulation;

a third set of instruction codes that automatically route the input command to the selected file storage client; and

wherein the file is accessible through any one of the plurality of protocols.

15. The computer program product of claim 14, wherein the plurality of protocols are serviced natively, without emulation.

16. The computer program product of claim 14, wherein at least some of the plurality of protocols are different.

17. The computer program product of claim 14, wherein the third set of instruction codes automatically routes the input command without interaction on the part of a user that issues the input command.

18. The computer program product of claim 17, wherein the user comprises a computer program.

19. The computer program product of claim 17, wherein the third set of instruction codes uses a router system that appears as a single entity to the user.

20. The computer program product of claim 19, wherein the third set of instruction codes further establishes a connection to the file storage tank client using a single network address.

21. The computer program product of claim 14, wherein if a plurality of file storage clients are determined to service the input protocol, the second set of instruction codes selects one of the file storage clients.

22. The computer program product of claim 21, wherein the second set of instruction codes randomly selects the file storage client.

23. The computer program product of claim 21, wherein the second set of instruction codes selects the same storage tank client that was last used by the user issuing the input command.

24. The computer program product of claim 21, wherein the second set of instruction codes selects the file storage client in a sequential order.

25. The computer program product of claim 14, further comprising a datastore that stores a list of the plurality of protocols serviced by the file storage clients.

26. The computer program product of claim 17, wherein the third set of instruction codes automatically routes the input command without changing the input command content.

27. A processor-implemented storage tank system for automatically performing protocol-based routing of an input command to access a file using an input protocol, to a file storage client capable of natively servicing the same protocol as the input protocol, comprising:

means for determining the input protocol of the input message;

means for identifying a plurality of protocols serviced by a plurality of file storage clients;

means for comparing the input protocol of the input command to the plurality of protocols serviced by the plurality of file storage clients;

means for selecting the file storage client that is capable of servicing the same protocol as the input protocol, natively without emulation;

means for automatically routing the input command to the selected file storage client; and

wherein the file is accessible through any one of the plurality of protocols.

28. The storage tank system of claim 27, wherein the plurality of protocols are serviced natively, without emulation.

29. The storage tank system of claim 27, wherein at least some of the plurality of protocols are different.

30. The storage tank system of claim 27, wherein the means for automatically routing the input command automatically routes the input command without interaction on the part of a user that issues the input command.

31. The storage tank system of claim 30, wherein the user comprises a computer program.

32. The storage tank system of claim 30, wherein the means for automatically routing the input command uses a router system that appears as a single entity to the user.

33. The storage tank system of claim 32, wherein the means for automatically routing the input command establishes a connection to the file storage tank client using a single network address.

34. The storage tank system of claim 27, wherein if a plurality of file storage clients are determined to service the input protocol, the selecting means selects one of the file storage clients.

35. The storage tank system of claim 34, wherein the selecting means randomly selecting the file storage client.

36. The storage tank system of claim 34, wherein the selecting means selecting the same storage tank client that was last used by the user issuing the input command.

37. The storage tank system of claim 34, wherein the selecting means sequentially selecting the file storage client.

38. The storage tank system of claim 27, further comprising a datastore that stores a list of the plurality of protocols serviced by the file storage clients.

39. The storage tank system of claim 30, wherein the means for automatically routing the input command automatically routes the input command without changing the input command content.