DE69130279T2 - On-line Wiederherstellung eines fehlerhaften redundanten Gruppensystems - Google Patents

On-line Wiederherstellung eines fehlerhaften redundanten Gruppensystems

Info

Publication number
DE69130279T2
DE69130279T2 DE69130279T DE69130279T DE69130279T2 DE 69130279 T2 DE69130279 T2 DE 69130279T2 DE 69130279 T DE69130279 T DE 69130279T DE 69130279 T DE69130279 T DE 69130279T DE 69130279 T2 DE69130279 T2 DE 69130279T2
Authority
DE
Germany
Prior art keywords
storage unit
read
requested
data block
executed
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
DE69130279T
Other languages
English (en)
Other versions
DE69130279D1 (de
Inventor
David Charles Stallmo
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.)
EMC Corp
Original Assignee
EMC 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 EMC Corp filed Critical EMC Corp
Publication of DE69130279D1 publication Critical patent/DE69130279D1/de
Application granted granted Critical
Publication of DE69130279T2 publication Critical patent/DE69130279T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
    • G11C29/70—Masking faults in memories by using spares or by reconfiguring
    • 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
    • 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
    • G06F11/14—Error detection or correction of the data by redundancy in operation
DE69130279T 1990-10-23 1991-10-15 On-line Wiederherstellung eines fehlerhaften redundanten Gruppensystems Expired - Lifetime DE69130279T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/601,912 US5208813A (en) 1990-10-23 1990-10-23 On-line reconstruction of a failed redundant array system

Publications (2)

Publication Number Publication Date
DE69130279D1 DE69130279D1 (de) 1998-11-05
DE69130279T2 true DE69130279T2 (de) 1999-06-17

Family

ID=24409250

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69130279T Expired - Lifetime DE69130279T2 (de) 1990-10-23 1991-10-15 On-line Wiederherstellung eines fehlerhaften redundanten Gruppensystems

Country Status (6)

Country Link
US (2) US5208813A (de)
EP (2) EP0831400A3 (de)
JP (1) JP2959901B2 (de)
AU (1) AU8590491A (de)
CA (1) CA2053692A1 (de)
DE (1) DE69130279T2 (de)

Families Citing this family (340)

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US5390187A (en) 1995-02-14
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