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Integrated-circuit implementation of a storage-shelf router and a path controller card for combined use in high-availability mass-storage-device shelves that may be incorporated within disk arrays

  • US 20050204078A1
  • Filed: 12/13/2004
  • Published: 09/15/2005
  • Est. Priority Date: 01/13/2003
  • Status: Active Grant
First Claim
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1. A storage-shelf-router integrated circuit employed within a storage shelf that contains a number of data-storage devices interconnected to two communications media, the storage-shelf-router integrated circuit including:

  • a first communications-medium port;

    a second communications-medium port;

    one or more processors;

    a number of data-storage-device-link-port components that transmit data and commands to the number of data-storage devices through disk-drive links;

    routing logic for routing commands received through the first and second communications-medium ports to the one or more processors and for routing data received through the two or more communications-medium ports to the number of data-storage-device-link-port components; and

    a disk-drive adaptation layer that allows the storage-shelf router to interface to, and manage, different types of data-storage devices.

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