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Disk storage accessing system and method for changing access path to storage devices

  • US 6,792,503 B2
  • Filed: 12/06/2001
  • Issued: 09/14/2004
  • Est. Priority Date: 12/06/2000
  • Status: Expired due to Fees
First Claim
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1. A disk storage accessing system for enabling a plurality of computers to share and access a plurality of disk storage, said system comprising:

  • a plurality of computers that refer to said disk storage, each of said computers including counting means for counting a frequency of accesses to each of said disk storages; and

    means for receiving an access path change command to change access paths for said computer to access a different disk storage according to said command; and

    instructing means for collecting and totaling a frequency of accesses to each disk storage, as counted by the counting means of each of said computers, as well as instructing a particular disk storage as a copy source disk storage to copy content in said copy source disk storage into one or more other disk storage as one or more target disk storages when said totaled access frequency is higher than a predetermined value, and for instructing the receiving means of a computer that accesses said copy source disk storage after receiving a report of copy completion, to change access paths so as to access a target disk storage instead of said copy source disk storage.

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