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Virtual integrated cartridge loader for virtual tape storage system

  • US 5,805,864 A
  • Filed: 09/10/1996
  • Issued: 09/08/1998
  • Est. Priority Date: 09/10/1996
  • Status: Expired due to Term
First Claim
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1. In a data storage system that provides an interface between a host and a data storage device ("DSD"), said interface emulating a virtual cartridge data storage library in communicating with the host, said virtual cartridge data storage library including a plurality of virtual cartridges, a method for virtually pre-loading virtual cartridges comprising the steps of:

  • maintaining an available cartridge database containing a list of virtual cartridges, each virtual cartridge identified in the available cartridge database by a virtual cartridge identifier;

    maintaining an active cartridge map cross-referencing each item of data stored on the DSD with one of the virtual cartridges;

    selecting a virtual cartridge identifier from the available database;

    entering the selected virtual cartridge identifier in a pre-load map;

    receiving from a host a scratch mount request; and

    satisfying the scratch mount request by performing steps comprising;

    choosing one of the cartridge identifiers from the pre-load map; and

    removing the chosen virtual cartridge identifier from the pre-load map.

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