DE69031443T2 - Verfahren und Anordnung zur Steuerung von Schattenspeichern - Google Patents

Verfahren und Anordnung zur Steuerung von Schattenspeichern

Info

Publication number
DE69031443T2
DE69031443T2 DE69031443T DE69031443T DE69031443T2 DE 69031443 T2 DE69031443 T2 DE 69031443T2 DE 69031443 T DE69031443 T DE 69031443T DE 69031443 T DE69031443 T DE 69031443T DE 69031443 T2 DE69031443 T2 DE 69031443T2
Authority
DE
Germany
Prior art keywords
data
written
locations
log
sources
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 - Fee Related
Application number
DE69031443T
Other languages
English (en)
Other versions
DE69031443D1 (de
Inventor
Scott H Davis
William L Goleman
David W Thiel
Robert G Bean
James A Zahrobsky
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.)
Digital Equipment Corp
Original Assignee
Digital Equipment 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 Digital Equipment Corp filed Critical Digital Equipment Corp
Application granted granted Critical
Publication of DE69031443D1 publication Critical patent/DE69031443D1/de
Publication of DE69031443T2 publication Critical patent/DE69031443T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/2053—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant
    • G06F11/2056—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring
    • G06F11/2082—Data synchronisation
    • 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
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/2053—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant
    • G06F11/2056—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring
    • G06F11/2064—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring while ensuring consistency
    • 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
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/2053—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant
    • G06F11/2056—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring
    • G06F11/2071—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring using a plurality of controllers

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Debugging And Monitoring (AREA)
  • Color Television Systems (AREA)
  • Communication Control (AREA)
DE69031443T 1989-06-30 1990-06-22 Verfahren und Anordnung zur Steuerung von Schattenspeichern Expired - Fee Related DE69031443T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US37425189A 1989-06-30 1989-06-30

Publications (2)

Publication Number Publication Date
DE69031443D1 DE69031443D1 (de) 1997-10-23
DE69031443T2 true DE69031443T2 (de) 1998-04-23

Family

ID=23475942

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69031443T Expired - Fee Related DE69031443T2 (de) 1989-06-30 1990-06-22 Verfahren und Anordnung zur Steuerung von Schattenspeichern

Country Status (8)

Country Link
US (1) US5546536A (de)
EP (1) EP0405859B1 (de)
JP (1) JPH07111689B2 (de)
AT (1) ATE158424T1 (de)
AU (1) AU622333B2 (de)
CA (1) CA2020269A1 (de)
DE (1) DE69031443T2 (de)
TW (1) TW285727B (de)

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US8655850B2 (en) 2005-12-19 2014-02-18 Commvault Systems, Inc. Systems and methods for resynchronizing information
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Also Published As

Publication number Publication date
EP0405859A3 (en) 1991-12-04
ATE158424T1 (de) 1997-10-15
AU5795490A (en) 1991-01-03
EP0405859A2 (de) 1991-01-02
TW285727B (de) 1996-09-11
CA2020269A1 (en) 1990-12-31
JPH03135638A (ja) 1991-06-10
JPH07111689B2 (ja) 1995-11-29
EP0405859B1 (de) 1997-09-17
DE69031443D1 (de) 1997-10-23
US5546536A (en) 1996-08-13
AU622333B2 (en) 1992-04-02

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