Systems and methods for read caching in flash storage

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United States of America Patent

PATENT NO 9223702
SERIAL NO

14457077

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Abstract

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A flash controller receives a read request for reading a page of data from the flash memory from a host system, and identifies, in a cache tag table stored in the random access memory, a virtual unit address associated with the page of data. In response to identifying the virtual unit address in the cache tag table, controller determines whether a valid tag line for the page of data is associated with the virtual unit address in the cache tag table. In response to determining that the valid tag line is associated with the virtual unit address in the cache tag table, the controller reads the page of data from the random access memory in accordance with the read request and returns the read data to the host system.

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Patent Owner(s)

  • HGST NETHERLANDS B.V.;HGST TECHNOLOGIES SANTA ANA, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hsueh, Po-Jen Kaohsiung, TW 9 178
Mataya, Richard A Rancho Santa Margarita, US 7 125
Moshayedi, Mark Newport Coast, US 80 2618

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