STORAGE DEVICE CONTROLLER ARCHITECTURE
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United States of America Patent
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app pub date -
Aug 19, 2015
filing date -
Aug 26, 2014
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Abandoned
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Abstract
Data storage apparatus includes a plurality of drive units, each of the drive units including a plurality of memory channels, and a plurality of storage medium controllers. Each storage medium controller addresses at least one of the memory channels. Each of the storage medium controllers is incapable of performing file system operations. An integrated storage controller connected to each of the drive units performs all file system operations of the data storage apparatus. The integrated storage controller includes a central processing unit, a host interface, and at least one storage medium interface for communicating with the plurality of storage medium controllers. A method for operating such data storage apparatus includes performing, in the integrated storage controller, error correction across all of the memory channels, as well as redundancy and wear-leveling. Each storage medium controller may perform error correction across all of the memory channels addressed by that controller.
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