DE69408498D1 - Kodierung und Rekonstruktion des Dateninhaltes von bis zu zwei nichtverfügbaren DASDs in einer DASD-Anordnung - Google Patents

Kodierung und Rekonstruktion des Dateninhaltes von bis zu zwei nichtverfügbaren DASDs in einer DASD-Anordnung

Info

Publication number
DE69408498D1
DE69408498D1 DE69408498T DE69408498T DE69408498D1 DE 69408498 D1 DE69408498 D1 DE 69408498D1 DE 69408498 T DE69408498 T DE 69408498T DE 69408498 T DE69408498 T DE 69408498T DE 69408498 D1 DE69408498 D1 DE 69408498D1
Authority
DE
Germany
Prior art keywords
array
dasd
data
dasds
image
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69408498T
Other languages
English (en)
Inventor
Miguel Mario Blaum
Jim Brady
Jehoshua Bruck
Jaishankar M Menon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of DE69408498D1 publication Critical patent/DE69408498D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • G06F11/1076—Parity data used in redundant arrays of independent storages, e.g. in RAID systems
    • G06F11/1092—Rebuilding, e.g. when physically replacing a failing disk
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1833—Error detection or correction; Testing, e.g. of drop-outs by adding special lists or symbols to the coded information
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
    • H03M13/11—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits using multiple parity bits
DE69408498T 1993-06-30 1994-06-23 Kodierung und Rekonstruktion des Dateninhaltes von bis zu zwei nichtverfügbaren DASDs in einer DASD-Anordnung Expired - Lifetime DE69408498D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8570793A 1993-06-30 1993-06-30

Publications (1)

Publication Number Publication Date
DE69408498D1 true DE69408498D1 (de) 1998-03-19

Family

ID=22193429

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69408498T Expired - Lifetime DE69408498D1 (de) 1993-06-30 1994-06-23 Kodierung und Rekonstruktion des Dateninhaltes von bis zu zwei nichtverfügbaren DASDs in einer DASD-Anordnung

Country Status (3)

Country Link
EP (1) EP0632376B1 (de)
JP (1) JP2750316B2 (de)
DE (1) DE69408498D1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6247157B1 (en) * 1998-05-13 2001-06-12 Intel Corporation Method of encoding data signals for storage
KR100472079B1 (ko) * 2001-05-24 2005-02-21 에스케이케미칼주식회사 불소수지의 제조방법
JP4457019B2 (ja) 2005-01-05 2010-04-28 富士通株式会社 情報処理システム及び一次ストレージ装置
JP4754852B2 (ja) 2005-03-15 2011-08-24 富士通株式会社 ストレージ制御装置および方法
JP2008197886A (ja) * 2007-02-13 2008-08-28 Nec Corp ストレージ装置及びその制御方法
JP4499776B2 (ja) 2007-10-31 2010-07-07 富士通株式会社 ストレージ制御装置、方法、及びプログラム
US8433979B2 (en) * 2011-02-28 2013-04-30 International Business Machines Corporation Nested multiple erasure correcting codes for storage arrays

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5271012A (en) * 1991-02-11 1993-12-14 International Business Machines Corporation Method and means for encoding and rebuilding data contents of up to two unavailable DASDs in an array of DASDs
US5258984A (en) * 1991-06-13 1993-11-02 International Business Machines Corporation Method and means for distributed sparing in DASD arrays
EP0519669A3 (en) * 1991-06-21 1994-07-06 Ibm Encoding and rebuilding data for a dasd array

Also Published As

Publication number Publication date
EP0632376B1 (de) 1998-02-11
JPH0728710A (ja) 1995-01-31
EP0632376A2 (de) 1995-01-04
EP0632376A3 (de) 1995-03-01
JP2750316B2 (ja) 1998-05-13

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