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DISK CONTROL APPARATUS, DISK CONTROL METHOD, REMOTE DISK CONTROL APPARATUS, AND REMOTE DISK CONTROL METHOD

  • US 20080301334A1
  • Filed: 08/08/2008
  • Published: 12/04/2008
  • Est. Priority Date: 08/18/2000
  • Status: Active Grant
First Claim
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1. A remote disk control apparatus for controlling input/output of data of a storage disk device according to an input/output request from a host, comprising:

  • a cache memory which stores a part of the data of said storage disk device;

    a management table which indicates whether a track of said storage disk device has been initialized to a predetermined track format;

    a control unit which creates said track format referring to said management table when an input/output request is received from said host; and

    a remote unit which transfers the initialization information of said management table to an another disk control apparatus of a secondary center according to a copy instruction from said host.

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