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STORAGE SYSTEM, MANAGEMENT COMPUTER, AND VIRTUAL LOGICAL VOLUME MANAGEMENT METHOD

  • US 20150248245A1
  • Filed: 02/22/2013
  • Published: 09/03/2015
  • Est. Priority Date: 02/22/2013
  • Status: Active Grant
First Claim
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1. A storage system comprising:

  • multiple storage apparatuses configured to provide a virtual logical volume composed of multiple logical pages to a host computer, receive an I/O (Input/Output) request from the host computer, allocate a physical page to a logical pages identified on the basis of I/O request when the I/O request is a write request, and write target data of the write request in the allocated physical page; and

    a management computer configured to manage the multiple storage apparatuses, whereinthe management computer is configured to;

    determine a logical page that is a target of data migration to attain a volume goal performance on the basis of access path information that can identify a storage apparatus that receives an I/O request in which the virtual logical volume is specified by the host computer, an actual volume response performance of a processing target virtual logical volume, the volume goal performance to be attained, a page response performance of a logical page in the virtual logical volume, and storage destination information that can identify a storage apparatus in which a physical page allocated to the logical page is present, andmigrate data in the physical page allocated to the target logical page from the storage apparatus having the physical page allocated to the target logical page to a physical page of another storage apparatus.

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