System for bypassing a server to achieve higher throughput between data network and data storage system

• US 6,757,291 B1
• Filed: 02/10/2000
• Issued: 06/29/2004
• Est. Priority Date: 02/10/2000
• Status: Expired due to Term

• Current Assignee: Western Digital Technologies Incorporated (Western Digital Corporation)
• Original Assignee: Simpletech, Inc. (Western Digital Corporation)
• Inventors: Hu, Lee Chuan
• Primary Examiner(s): Ton, Dang
• Assistant Examiner(s): HOM, SHICK C
• Application Number:
  US09/501,189
• Time in Patent Office: 1,601 Days
• Field of Search: 370/229, 370/230, 370/231, 370/235, 370/236, 370/237, 370/238, 370/389, 370/394, 370/395, 370/396, 370/397, 370/401, 370/402, 370/403, 370/395.1, 370/395.2, 370/395.3, 370/395.31, 370/395.52, 370/395.7, 370/395.71
• US Class Current: 370/401
• CPC Class Codes: H04L 67/00 Network arrangements or protocols for supporting network services or applications user-to-user messaging H04L51/00; network arrangements, protocols or services for supporting real-time applications in data packet communications networks H04L65/00
• CPC Class Codes: H04L 67/01 Protocols
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

A networked system is described in which the majority of data bypass the server(s). This design improves the end-to-end performance of network access by achieving higher throughput between the network and storage system, improving reliability of the system, yet retaining the security, flexibility, and services that a server-based system provides. The apparatus that provides this improvement consists of a network interface, server computer interface, and storage interface. It also has a switching element and a high-layer protocol decoding and control unit. Incoming traffic (either from the network or storage system) is decoded and compared against a routing table. If there is a matching entry, it will be routed, according to the information to the network, the storage interface, or sent to the server for further processing (default). The routing table entries are set up by the server based on the nature of the applications when an application or user request initially comes in. Subsequently, barring any changes or errors, there will be no data exchange between the server and the device (although, a control message may still flow between them). There may also be a speed matching function between the network and storage, load balancing function for servers, and flow control for priority and QoS purposes. Because the majority of data traffic will bypass the bus and the operating system (OS) of the server(s), the reliability and throughput can also be significantly improved. Therefore, for a given capacity of a server, much more data traffic can be handled.

Claims

1. An apparatus for interconnecting at least one data network, at least one storage device, and at least one server, comprising:

a network interface;

a storage interface;

a server interface;

wherein said network interface, said storage interface, and said server interface are within a housing;

wherein said apparatus can transfer data between at least two of at least one data network, said at least one storage device and at least one server;

wherein said at least one server may be bypassed in serving said data to or receiving said data from said at least one data network, further comprising a control unit, which routes based at least in part on a routing table, said data coming into or being served from said at least one data network either to or from said at least one storage device or to or from said at least one server; and

a high-level protocol decoding unit which decodes high layer application information, wherein said decoded high layer application information is used by said control unit to direct and control said data in real time.

2. The apparatus as described in claim 1, further comprising means for speed matching between said interfaces.

3. The apparatus as described in claim 1, further comprising a speed matching manager configured to perform speed matching between said network interface, said storage interface, or said server interface.

4. The apparatus as described in claim 1, further comprising means for load balancing among said interfaces which are homogeneous.

5. The apparatus as described in claim 1, further comprising a load balancing manager configured to perform load balancing among said network interface, said storage interface, or said server interface, which are homogeneous.

6. A method of using the apparatus as described in claim 1 comprising concurrently fetching pipelined data from said at least one storage device, and performing request processes by said at least one server in order to further accelerate network data access speed.

7. A method of using the apparatus as described in claim 1 comprising:

decoding multiple path high layer protocols;

packaging said data into segments;

switching said data to said network interface, said storage interface, or said server interface; and

employing synchronization to interlock said decoding and switching.

8. A method of using the apparatus as described in claim 1 comprising employing base multiple segmentation (BMS), whereby said data is subdivided into segments which are each an internal multiple of a fixed base segment size.

19. The apparatus of claim 1 wherein the housing is a server housing.

20. The apparatus of claim 1 wherein the housing is an external unit.

9. An apparatus for interconnecting at least one data network, at least one storage device, and at least one server, comprising:

a network interface;

a storage interface;

a server interface, wherein said network interface, said storage interface, and said server interface are within a housing;

wherein said apparatus can transfer data between at least two of at least one data network, at least one storage device and at least one server;

wherein said at least one server may be bypassed in serving said data to or receiving said data from said at least one data network, further comprising a control unit, which routes based at least in part on a routing table, said data coming into or being served from said at least one data network either to or from said at least one storage device or to or from said at least one server; and

a high-level protocol decoding unit which decodes high layer application information, wherein said decoded high layer application information is used by said control unit to forward said data with flow control and quality of service (QOS) measure.

10. The apparatus as described in claim 9, further comprising means for speed matching between said interfaces.

11. The apparatus as described in claim 9, further comprising a speed matching manager configured to perform speed matching between said network interface, said storage interface, or said server interface.

12. The apparatus as described in claim 9, further comprising means for load balancing among said interfaces which are homogeneous.

13. The apparatus as described in claim 9, further comprising a load balancing manager configured to perform load balancing among said network interface, said storage interface, or said server interface, which are homogeneous.

14. A method of using the apparatus as described in claim 9 comprising concurrently fetching pipelined data from said at least one storage device, and performing request processes by said at least one server in order to further accelerate network data access speed.

15. A method of using the apparatus as described in claim 9 comprising:

decoding multiple path high layer protocols;

packaging said data into segments;

switching said data to said network interface, said storage interface, or said server interface; and

employing synchronization to interlock said decoding and switching.

16. A method of using the apparatus as described in claim 9 comprising employing base multiple segmentation (BMS), whereby said data is subdivided into segments which are each an integral multiple of a fixed base segment size.

21. The apparatus of claim 9 wherein the housing is a server housing.

22. The apparatus of claim 9 wherein the housing is an external unit.

17. A method of using an apparatus for interconnecting at least one data network, at least one storage device, and at least one server, comprising:

providing a network interface;

providing a storage interface;

providing a server interface;

wherein said network interface, said storage interface and said server interface are within a housing;

providing a routing element having a routing table;

transferring data between at least two of at least one data network, at least one storage device and at least one server, wherein said at least one server may be bypassed in serving said data to or receiving said data from said at least one data network;

providing a control unit in communication with said routing element, which routes said data coming into or being served from said at least one data network either to or from said at least one storage device or to or from said at least one server;

providing a high-level protocol decoding unit, wherein decoded high layer application information is used by said control unit to direct and control data traffic in real time;

decoding multiple path high layer protocols;

packaging said data into segments;

switching said data to said network interface, said storage interface, or said server interface; and

employing synchronization to interlock said decoding and switching.

18. A method of using an apparatus for interconnecting at least one data network, at least one storage device, and at least one server, comprising:

providing a network interface;

providing a storage interface;

providing a server interface;

wherein said network interface, said storage interface and said server interface are within a housing;

providing a routing element having a routing table;

transferring data between at least two of at least one data network, at least one storage device and at least one server;

wherein said at least one server may be bypassed in serving said data to or receiving said data from said at least one data network;

providing a control unit in communication with said routing element, which routes said data coming into or being served from said at least one data network either to or from said at least one storage device or to or from said at least one server;

providing a high-level protocol decoding unit, wherein decoded high layer application information is used by said control unit to forward data traffic with flow control and quality of service;

decoding multiple path high layer protocols;

packaging said data into segments;

switching said data to said network interface, said storage interface, or said server interface; and

employing synchronization to interlock said decoding and switching.