WO2000029952A3 - Method and system for incremental backup copying of data - Google Patents

Method and system for incremental backup copying of data Download PDF

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Publication number
WO2000029952A3
WO2000029952A3 PCT/US1999/027569 US9927569W WO0029952A3 WO 2000029952 A3 WO2000029952 A3 WO 2000029952A3 US 9927569 W US9927569 W US 9927569W WO 0029952 A3 WO0029952 A3 WO 0029952A3
Authority
WO
WIPO (PCT)
Prior art keywords
physical
logical object
storage locations
reference time
layer
Prior art date
Application number
PCT/US1999/027569
Other languages
French (fr)
Other versions
WO2000029952A9 (en
WO2000029952A2 (en
Inventor
Philip E Tamer
Terry Seto Lee
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
Priority to JP2000582895A priority Critical patent/JP3866038B2/en
Priority to DE19983713T priority patent/DE19983713T1/en
Priority to GB0109796A priority patent/GB2359159B/en
Publication of WO2000029952A2 publication Critical patent/WO2000029952A2/en
Publication of WO2000029952A3 publication Critical patent/WO2000029952A3/en
Priority to HK02101103.0A priority patent/HK1039665B/en
Publication of WO2000029952A9 publication Critical patent/WO2000029952A9/en

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
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1446—Point-in-time backing up or restoration of persistent data
    • G06F11/1448—Management of the data involved in backup or backup restore
    • G06F11/1451—Management of the data involved in backup or backup restore by selection of backup contents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S707/00—Data processing: database and file management or data structures
    • Y10S707/99951—File or database maintenance
    • Y10S707/99952—Coherency, e.g. same view to multiple users
    • Y10S707/99953—Recoverability
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S707/00—Data processing: database and file management or data structures
    • Y10S707/99951—File or database maintenance
    • Y10S707/99952—Coherency, e.g. same view to multiple users
    • Y10S707/99954—Version management

Abstract

A method and apparatus for identifying changes to a logical object on a host computer by examining information relating to a physical level in a data storage system wherein the logical object is stored. In one embodiment, a method for determining changes to a logical object subsequent to a reference time is described for a logical object that belongs to an application layer of a host computer in a computer system. The computer system includes the host computer, a storage system, and at least one mapping layer that maps the logical object to a physical layer relating to physical storage locations on the storage system. The physical layer includes physical change information relating to changes made to the physical storage locations on the storage system subsequent to the reference time. The method includes steps of mapping the logical object from the application layer to the physical layer to identify which physical storage locations include data corresponding to the logical object, examining the physical change information to identify any of the physical storage locations identified in the step of mapping that include data that has changed subsequent to the reference time, and determining that changes have been made to the logical object when any physical storage locations are identified in the step of examining as including data that has changed subsequent to the reference time.
PCT/US1999/027569 1998-11-19 1999-11-19 Method and system for incremental backup copying of data WO2000029952A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2000582895A JP3866038B2 (en) 1998-11-19 1999-11-19 Method and apparatus for identifying changes to logical objects based on changes to logical objects at the physical level
DE19983713T DE19983713T1 (en) 1998-11-19 1999-11-19 Method and apparatus for identifying changes to a logical object based on changes to the logical object on a physical level
GB0109796A GB2359159B (en) 1998-11-19 1999-11-19 Method and apparatus for identifying changes to a logical object based on changes to the logical object at a physical level
HK02101103.0A HK1039665B (en) 1998-11-19 2002-02-15 Method and apparatus for identifying changes to a logical object based on changes to the logical object at a physical level

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/196,651 US6385626B1 (en) 1998-11-19 1998-11-19 Method and apparatus for identifying changes to a logical object based on changes to the logical object at physical level
US09/196,651 1998-11-19

Publications (3)

Publication Number Publication Date
WO2000029952A2 WO2000029952A2 (en) 2000-05-25
WO2000029952A3 true WO2000029952A3 (en) 2000-08-03
WO2000029952A9 WO2000029952A9 (en) 2002-08-22

Family

ID=22726271

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/027569 WO2000029952A2 (en) 1998-11-19 1999-11-19 Method and system for incremental backup copying of data

Country Status (6)

Country Link
US (1) US6385626B1 (en)
JP (1) JP3866038B2 (en)
DE (1) DE19983713T1 (en)
GB (1) GB2359159B (en)
HK (1) HK1039665B (en)
WO (1) WO2000029952A2 (en)

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Also Published As

Publication number Publication date
DE19983713T1 (en) 2002-01-24
US6385626B1 (en) 2002-05-07
HK1039665A1 (en) 2002-05-03
JP3866038B2 (en) 2007-01-10
HK1039665B (en) 2004-01-02
GB0109796D0 (en) 2001-06-13
GB2359159A (en) 2001-08-15
WO2000029952A9 (en) 2002-08-22
JP2002530741A (en) 2002-09-17
WO2000029952A2 (en) 2000-05-25
GB2359159B (en) 2003-08-06

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