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
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United States of America Patent
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Jan 10, 2012
Grant Date -
Sep 15, 2005
app pub date -
Dec 13, 2004
filing date -
Jan 13, 2003
priority date (Note) -
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Abstract
One embodiment of the present invention is an integrated circuit implementing a storage-shelf router, used in combination with path controller cards and optionally with other storage-shelf routers, to interconnect SATA disks within a storage shelf or disk array to a high-bandwidth communications medium, such as an FC arbitrated loop. When two, four, six, or eight or more storage-shelf routers are used within a storage shelf, and the interconnections between the storage-shelf routers, disk drives, and external communications media are properly designed and configured, the resulting storage shelf constitutes a discrete, highly-available component that may be included in a disk array or in other types of electronic devices. The storage-shelf router features a disk-drive adaptation layer that allows a storage-shelf router to interface to, and manage, any of many different types of disk drives. The disk-drive adaptation layer includes a disk-profile table and associated firmware logic.
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