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CONNECTING DEVICE OF STORAGE DEVICE AND COMPUTER SYSTEM INCLUDING THE SAME CONNECTING DEVICE

  • US 20080222356A1
  • Filed: 05/12/2008
  • Published: 09/11/2008
  • Est. Priority Date: 12/09/2002
  • Status: Active Grant
First Claim
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1. A switch device comprising:

  • a first interface to be coupled to a host computer via network;

    a plurality of virtual volumes to be provided for the host computer;

    a second interface to be coupled to a plurality of storage systems including data volumes for storing data; and

    a processor coupled to the first interface and the second interface,wherein the processor receives, through the first interface, a first instruction controlling a function of one of said plurality of storage systems from the host computer to a virtual function volume for controlling function and without storing data,wherein said first instruction including a virtual volume identifier identifying a virtual volume from the host computer, identifies at least one of data volumes corresponding to the virtual volume specified by the virtual volume identifier, and sends, through the second interface, at least one of a second instruction to at least one of the data volumes being included in at least one of either of a first storage system or a second storage system,wherein said function is a snapshot function or mirror function,wherein said host computer sends said first instruction as an Input/Output (I/O) command to said virtual function volume, andwherein the second instruction is based on a protocol for a storage system which is a destination of the second instruction.

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