Using spare capacity in solid state drives

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United States of America Patent

PATENT NO 9471428
APP PUB NO 20150324264A1
SERIAL NO

14270527

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Abstract

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An SSD has a plurality of dies, with each die having a storage capacity. The storage capacity of each die is divided into a primary capacity and a spare capacity. A primary die has a maximum primary capacity, and a sum of the spare capacities of the remaining dies is greater than the maximum primary capacity. Data stored on the SSD is distributed among the primary capacities of the dies. When a failure of a first die is detected, data stored on the failed first die is migrated to the spare capacity of at least one of the remaining dies.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chinnakkonda, Vidyapoornachary Diyanesh B Bangalore, IN 75 360
Daly, David M Croton-on-Hudson, US 40 522
Tressler, Gary A Sandy Hook, US 54 629

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