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Method and data processing system providing file I/O across multiple heterogeneous computer systems

  • US 20030131109A1
  • Filed: 06/29/2001
  • Published: 07/10/2003
  • Est. Priority Date: 06/29/2001
  • Status: Active Grant
First Claim
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1. A method of accessing a first file on a disk system on one of a plurality of computer systems from a program executing on another of the plurality of computer systems, wherein:

  • the plurality of computer systems comprises;

    a first computer system containing the program communicating through an API with a first interface system, and a second computer system containing the disk system and a second interface system for communicating with the first interface system and for reading from and writing to the disk system;

    the first computer system and the second computer system are heterogeneous computer systems;

    said method comprising;

    A) opening a first session from the program via the API through the first interface system to the second interface system in order to access the first file on the disk system;

    B) blocking the first plurality of records into a first plurality of blocks;

    C) transmitting the first plurality of blocks over the first session from a first one of the plurality of computer systems to a second one of the plurality of computer systems;

    D) unblocking the first plurality of blocks into a second plurality of records on the second one of the plurality of computer systems; and

    E) closing the first session after completing the transmitting in step (C).

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