Integrated storage appliance

• US 7,624,170 B2
• Filed: 04/24/2007
• Issued: 11/24/2009
• Est. Priority Date: 09/26/2002
• Status: Active Grant

• Current Assignee: Hulu LLC (The Walt Disney Company)
• Original Assignee: International Business Machines Corporation
• Inventors: Aubert, Dante A., Nguyen, Lu, Das, Sanjoy, Hacigumus, Vahit H., Iyer, Balakrishna R., Flynn, John T.
• Primary Examiner(s): JEAN GILLES, JUDE
• Application Number:
  US11/739,369
• Publication Number:
  US 20070192475A1
• Time in Patent Office: 945 Days
• Field of Search: 709/223, 709/226, 709/232, 709/230
• US Class Current: 709/223
• CPC Class Codes: G06F 11/2023 Failover techniques
• CPC Class Codes: G06F 11/2038 with a single idle spare processing component
• CPC Class Codes: G06F 11/2046 where the redundant components share persistent storage G06F11/2043 takes precedence
• CPC Class Codes: G06F 11/2097 maintaining the standby controller/processing unit updated initialisation or re-synchronisation thereof G06F11/1658 and subgroups
• CPC Class Codes: Y10S 370/902 Packet switching

Abstract

A system and method for providing an integrated storage appliance is disclosed. The storage appliance includes a storage subsystem, a process cluster coupled to the storage subsystem, and a customizable software stack that includes storage-access application so executed by the processor cluster, wherein subsystem, processor cluster and software stack are integrated such that the storage appliance exhibits greater combined reliability, higher availability, and higher serviceability characteristics than would be provided by a sum of the characteristics unintegrated components.

Claims

1. A storage appliance comprising:

a storage subsystem;

at least three processor clusters coupled to the storage subsystem, wherein a first processor cluster enables functions of a data access server, a second processor cluster enables functions of a HyperText Transfer Protocol (HTTP) server, and a third processor cluster enables functions of a monitoring and backup server; and

a customizable software stack that includes storage-access application software executed by one of the processor clusters, wherein the customizable storage stack is distributed among the at least three processor clusters.

2. The storage appliance of claim 1, wherein each of the processor clusters includes a plurality of processors coupled to a data communications network.

3. The storage appliance of claim 2, wherein each of the processor clusters and the storage subsystem are interconnected by an internal storage area network.

4. The storage appliance of claim 3, wherein the storage subsystem includes a housing and an internal power distribution system and wherein the at least three processor clusters are physically located within the storage subsystem housing and integrated with the internal power distribution system.

5. The storage appliance of claim 4, wherein the internal power distribution system includes a first power supply that provides a first voltage appropriate to supply the storage subsystem and a second power supply that provides a second voltage appropriate to supply each of the processor clusters.

6. The storage appliance of claim 5, wherein the first power supply produces 220 V 3-phase power and the second power supply produces 110 V 2-phase power.

7. The storage appliance of claim 6, wherein components of the storage appliance are powered on in a sequence such that at the end of the sequence all of the components of the storage appliance are initialized and ready to deliver service.

8. The storage appliance of claim 6, wherein one or more of the processor clusters provides network access to data stored in the storage subsystem.

9. The storage appliance of claim 4, wherein the storage subsystem performs block storage serving, and wherein one or more of the processor clusters performs file serving and application serving for remote clients.

10. The storage appliance of claim 9, wherein the customizable software stack further includes HTTP, data management, and diagnostic and monitoring software.

11. An integrated storage appliance, comprising:

a storage subsystem to store data;

a plurality of processor clusters embedded within the storage subsystem;

a storage area network to interconnect the plurality of processor clusters and the storage subsystem;

a storage-access application executing on at least one of the plurality of processor clusters, the storage-access application to interface with the storage subsystem, wherein a first portion of the storage-access application executes on a first processor cluster to enable functions of a data access server, wherein a second portion of the storage-access application executes on a second processor to enable functions of a HyperText Transfer Protocol (HTTP) server, wherein a third portion of the storage-access application executes on a third processor cluster to enable functions of a monitoring and backup server; and

a data communications network coupled to the plurality of processor clusters, wherein the plurality of processor clusters receive and process input/output (I/O) requests from a plurality of clients, the I/O requests received via a data communications network.

12. The integrated storage appliance of claim 11, wherein the I/O requests are generated by the plurality of clients using a web-based interface that is supported by the data communications network.

13. The integrated storage appliance of claim 12 wherein each processor cluster includes a first processor and a second processor and wherein the first processor is a production processor and the second processor is a standby processor.

14. The integrated storage appliance of claim 13, wherein the storage subsystem includes a housing and an internal power distribution system, and the plurality of processor clusters are physically located within the storage subsystem housing and integrated with the internal power distribution system.

15. The integrated storage appliance of claim 14, wherein the internal power distribution system comprises a first power supply and a second power supply, wherein the first power supply powers the storage subsystem, and the second power supply powers the plurality of processor clusters at an appropriate voltage.

16. The integrated storage appliance of claim 15, wherein the first power supply produces 220 V 3-phase power and the second power supply produces 110 V 2-phase power.

17. The integrated storage appliance of claim 14 wherein the storage subsystem performs block storage serving, and the plurality of processor clusters provides file serving and application serving for remote clients.

18. The integrated storage appliance of claim 17, wherein the storage-access application includes HTTP, data management, and diagnostic and monitoring functionality.

19. A system comprising:

a storage server coupled to a network, the storage server to provide storage to a client coupled to the network and to allow the client to access data stored on the storage server using HyperText Transfer Protocol (HTTP) protocol,

wherein a file uploaded from the client to the storage server is encoded prior to transmission and decoded by the storage server to eliminate interference by HTTP protocol, and

wherein the storage server includes a first processor cluster to enable functions of a data access server, a second processor cluster to enable functions of an HTTP server, and a third processor cluster to enable functions of a monitoring and backup server.

20. The system of claim 19, wherein a software architecture of the storage server includes a presentation layer, an application layer, and a storage layer.

21. The system of claim 19, wherein a software application comprises a presentation tool in the presentation layer.

22. The system of claim 19, further comprising a web server to handle HTTP requests from the client and to deliver HTTP responses to the client from the storage server.

23. The system of claim 20, wherein the application layer is responsible for dynamic HTML generation, user authentication and session management.

24. The system of claim 23, wherein the application layer includes java servlets and a log database.

25. The system of claim 24, wherein transactions between the client and the storage server are recorded in the log database.

26. The system of claim 20, wherein the storage layer is located in the storage server and communicates with the application layer through SCSI protocol.

27. The system of claim 20, wherein a download request triggers a corresponding servlet request that issues a storage request to the storage layer, such that the storage layer reads a corresponding file and sends the corresponding file back to the application layer, which transforms the corresponding file to a servlet output stream and sends the servlet output stream to the client.

28. The system of claim 26, wherein the storage server includes a user interface that includes links that allow a user of the client to upload/download files, compress files, encrypt/decrypt files, delete files, and view information associated with the files.

29. The system of claim 28, wherein a file upload function reads a file from the client, transforms the file into an encoded ServletInputStream file, transfers the ServletInputStream file across the network to a file server, wherein the file server accepts the ServletInputStream file, decodes the ServeletInputStream file, and stores contents of the ServletInputStream file in the storage server.

30. The system of claim 28, wherein the files are encoded, compressed and encrypted prior to transmission.