Disk array controller capable of preventing data distortion caused by an interruption of data write operation

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5664096
SERIAL NO

08442480

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Abstract

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A disk array controller is connected to both a host computer and a plurality of disk drives operating in parallel. The disk array controller is responsive to an output request from the host computer for dividing data supplied from the host computer and parallel writing the divided data in the plurality of disk drives. In response to an input request from the host computer, the disk array controller combines data parallelly read from the disk drives into a set of data. Responsive to the output request, a processor stores in a non-volatile memory a write status of each block within a data write area for each disk drive to which data is to be written. The write status includes a first status representing a write completed status of each disk drive, a second status representing a writing status of each disk drive, and a third status representing a no write indication status of each disk drive.

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Patent Owner(s)

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HITACHI LTD6-6 MARUNOUCHI 1-CHOME CHIYODA-KU TOKYO 100-8280

International Classification(s)

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  • 1995 Application Filing Year
  • G06F Class
  • 8529 Applications Filed
  • 5482 Patents Issued To-Date
  • 64.28 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances1995199619971998199920002001200220032004200520062007200820092010201120122013201420150255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ichinomiya, Hiroshi Kawasaki, JP 12 145
Satoh, Takao Sagamihara, JP 74 1974
Yamamoto, Akira Sagamihara, JP 924 13286

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Patent Citation Ranking

  • 28 Citation Count
  • G06F Class
  • 56.15 % this patent is cited more than
  • 28 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges9335313157110735025241974801 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9091 - 100100 +020406080100120140160180200220240260280300320340360

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