Method and system for networking computers having varying file architectures

• US 5,218,697 A
• Filed: 04/18/1990
• Issued: 06/08/1993
• Est. Priority Date: 04/18/1990
• Status: Expired due to Term

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Chung, William H.
• Primary Examiner(s): Shaw, Gareth D.
• Assistant Examiner(s): KATBAB, ABDOLLAH
• Application Number:
  US07/511,358
• Time in Patent Office: 1,147 Days
• Field of Search: 364/200 MS File, 364/900 MS File, 364/DIG. 1
• US Class Current: 709/230
• CPC Class Codes: G06F 16/258 Data format conversion from or to a database
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

An improved, distributed network comprising a central server and at least one foreign server, which provides a method and means for integrating multiple networks with varying file systems is provided. The present invention allows foreign servers to coexist on a single integrated file server while eliminating server-to-server translations, thus improving the performance of the network.

In a preferred embodiment, the central server communicates with central server clients in accordance with a central server network protocol, and converts central server network file service requests from the central server clients into central server file system commands. Foreign servers communicate with foreign server clients in accordance with a foreign server network protocol and convert foreign server network file service requests from foreign server clients into central server file system commands. The foreign servers also inform the central server of file system operations performed on the central server file system by the foreign file servers.

Claims

1. An improved, distributed network comprising:

(a) a central server having a central server file system, said central server including means for communicating with central server clients in accordance with a central server network protocol, means for converting central server network file service requests in said central server network protocol, communicated form said central server clients, into central server file system commands, and means for sending said central server file system commands to said central server file system; and

(b) a foreign server, said foreign server including means for communicating with foreign server clients in accordance with a foreign server network protocol, means for converting foreign server network file service requests in said foreign server network protocol, communicated from said foreign server clients, into central server file system commands, and means for sending said central server file system commands directly to said central server file system without routing the commands through the central server.

2. The distributed network of claim 1, further comprising means for informing said central server of central file system commands sent by said foreign file server to said central server file system, thereby operatively connecting said central server to said foreign server.

3. The distributed network of claim 2 wherein the central server further comprises a foreign server data structure containing status information from the informing means regarding central server file system commands.

4. The distributed network of claim 3 wherein the foreign server data structure includes connection information describing a connection between the foreign server and the central server file system.

5. The distributed network of claim 3 wherein the foreign server data structure includes file information describing central server files opened by foreign servers.

6. The distributed network of claim 3 wherein the foreign server data structure includes client information describing a client type.

7. The distributed network of claim 3 wherein the foreign server data structure includes session information describing periods during which foreign servers communicate with the central server file system.

8. The distributed network of claim 1 wherein the foreign server includes a mapping means for directly converting foreign server network file service requests in said foreign server protocol, communicated from foreign server clients, into central server file system commands.

9. A method for accessing files in a central server file system of a network, the network including a central server, central server clients, a foreign server, and foreign server clients, the method comprising the steps of:

communicating central server network file service requests in a central server network protocol from central server clients to the central server;

converting the central server network file service requests to central server file system commands;

sending the converted central server file system commands to the central server file system;

transferring foreign server network file service requests in a foreign server protocol to the foreign server;

translating the foreign server network file service requests into central server file system commands; and

forwarding the translated central server file system commands to the central server file system by the foreign server without routing the commands through the central server.

10. The method of claim 9 for accessing files in a central server file system, further comprising the step of informing the central server of central server file system commands forwarded by the foreign server to the central server file system.

11. The method of claim 9 wherein the step of translating further includes mapping foreign server network file service requests directly into central server file system commands.

12. The method of claim 9, further comprising the step of storing status information regarding central server file system commands in one of a foreign server table and a foreign server data structure in the central server.

13. The method of claim 9, further comprising the step of storing connection information describing a connection between the foreign server and the central server file system in one of a foreign server table and a foreign server data structure in the central server.

14. The method of claim 9, further comprising the step of storing file information describing central server files opened by foreign servers in one of a foreign server table and a foreign server data structure in the central server.

15. The method of claim 9, further comprising the step of storing client information describing a client type in one of a foreign server table and a foreign server data structure in the central server.

16. A method for accessing files in a central server file system of a network, the network including a central server, central server clients, a foreign server, and foreign server clients, the central server for receiving central server network file service requests in a central server network protocol from central server clients, for converting the central server network file service requests to central server file system commands, and for sending the converted central server file system commands to the central server file system, the method comprising the steps of:

transferring foreign server network file service requests in a foreign server protocol to the foreign server;

translating the foreign server network file service requests into central server file system commands; and

forwarding the translated central server file system commands to the central server file system by the foreign server without routing the commands through the central server.