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Multi-tier data storage system

  • US 20060041719A1
  • Filed: 08/18/2004
  • Published: 02/23/2006
  • Est. Priority Date: 08/18/2004
  • Status: Abandoned Application
First Claim
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1. A multi-tier data storage system, comprising:

  • a first data storage unit for storing digital images uploaded over a network;

    a second data storage unit coupled to the first data storage unit for archiving digital images residing on the first data storage unit for more than a predetermined period; and

    a third data storage unit coupled to the second data storage unit, the third data storage unit caching a requested digital image from the second data storage unit if the requested digital image is unavailable on the first data storage unit.

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