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System and method for management of mirrored storage devices storing device serial numbers

  • US 6,732,231 B1
  • Filed: 02/28/2001
  • Issued: 05/04/2004
  • Est. Priority Date: 02/28/2001
  • Status: Expired due to Term
First Claim
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1. In a computer system having a plurality of storage devices and a host computer which interacts with the storage devices, a method for managing identification of the storage devices for the host computer when data is replicated from a storage device of the plurality of storage devices to another storage device of the plurality of storage devices, the method comprising the steps of:

  • storing storage device identification information for a first storage device of the plurality of storage devices on a first predetermined area of the first storage device;

    storing the storage device identification information in a second predetermined location on a second storage device of the plurality of storage devices and that is used to copy the data from the first storage device; and

    in response to an inquiry from the host computer regarding the device identification information for the second storage device, selectively responding with either (i) the device identification information for the first storage device or (ii) with storage identification information for the second storage device, wherein such selectivity is based on a predetermined criterion.

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