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Heterogeneous computer system, heterogeneous input/output system and data back-up method for the systems

  • US 20040117552A1
  • Filed: 09/17/2003
  • Published: 06/17/2004
  • Est. Priority Date: 04/01/1997
  • Status: Active Grant
First Claim
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1. A storage system comprising:

  • a disk controller coupled to a host computer;

    a plurality of disks coupled to said disk controller;

    wherein said storage system is coupled to another storage system, and wherein said disk controller receives an I/O request from said host computer, selects a storage system, in which a storage area accessed by said host computer exists, based on a disk address included in said I/O request, and sends said I/O request to said another storage system if said storage area exists in said another storage system.

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