CA2153769A1 - Apparatus and method for transferring and storing data from an arbitrarily large number of networked computer storage devices - Google Patents

Apparatus and method for transferring and storing data from an arbitrarily large number of networked computer storage devices

Info

Publication number
CA2153769A1
CA2153769A1 CA002153769A CA2153769A CA2153769A1 CA 2153769 A1 CA2153769 A1 CA 2153769A1 CA 002153769 A CA002153769 A CA 002153769A CA 2153769 A CA2153769 A CA 2153769A CA 2153769 A1 CA2153769 A1 CA 2153769A1
Authority
CA
Canada
Prior art keywords
storage device
backup
file
disk
data
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.)
Granted
Application number
CA002153769A
Other languages
French (fr)
Other versions
CA2153769C (en
Inventor
Steven E. Kullick
Charles S. Spirakis
Diane J. Titus
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.)
Apple Inc
Original Assignee
Steven E. Kullick
Charles S. Spirakis
Diane J. Titus
Apple Computer, Inc.
Apple Inc.
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 Steven E. Kullick, Charles S. Spirakis, Diane J. Titus, Apple Computer, Inc., Apple Inc. filed Critical Steven E. Kullick
Publication of CA2153769A1 publication Critical patent/CA2153769A1/en
Application granted granted Critical
Publication of CA2153769C publication Critical patent/CA2153769C/en
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
    • G06F11/14—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
    • G06F11/1458—Management of the backup or restore process
    • G06F11/1464—Management of the backup or restore process for networked environments
    • 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
    • G06F11/1456—Hardware arrangements for backup
    • 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

Abstract

This invention provides a method and apparatus for storing on centralized mass storage devices archival data from multiple computers in a networked environment. In a networked computer system having a communication network interconnecting one or more computers and a storage unit, parallel processes are created to perform repeated backup operations for disks on computer devices on the communication network.
A
storage unit may be a single storage device capable of executing a plurality of processes or one or more primary storage devices connected to one or more secondary storage devices.
The backup operations for a disk include a backup initialization which occurs when a primary storage device does not have a full index or a backup data file for a disk but a secondary storage device does. During a backup initialization, data from the files and directories on that disk along with an index entry for each file or directory are passed to the primary storage device which directly passes that information directly through to the secondary storage device. The index entries are incorporated into a full index and the data is incorporated into a backup data file. An index entry contains, among other information, the location of a file or directory on the disk, the date the file or directory was last modified and the location of the associated data in the backup data file.
During a backup cycle, the computer device is incrementally backed up to a primary storage device such that the primary storage device contains a full index with an entry for each file and directory on the disk and a backup data file for the disk with data for the files and directories which have been changed or created since the last backup to the secondary storage device occurred. When a specified, predetermined time or event occurs or the transfer is otherwise indicated, the primary storage device transfers the full index and the backup data file to the secondary storage device.
CA002153769A 1993-01-21 1994-01-19 Apparatus and method for transferring and storing data from an arbitrarily large number of networked computer storage devices Expired - Lifetime CA2153769C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US715993A 1993-01-21 1993-01-21
US007,159 1993-01-21
PCT/US1994/000765 WO1994017474A1 (en) 1993-01-21 1994-01-19 Apparatus and method for backing up data from networked computer storage devices

Publications (2)

Publication Number Publication Date
CA2153769A1 true CA2153769A1 (en) 1994-08-04
CA2153769C CA2153769C (en) 2001-08-07

Family

ID=21724562

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002153769A Expired - Lifetime CA2153769C (en) 1993-01-21 1994-01-19 Apparatus and method for transferring and storing data from an arbitrarily large number of networked computer storage devices

Country Status (8)

Country Link
US (1) US5751997A (en)
EP (1) EP0680634B1 (en)
JP (1) JP3130536B2 (en)
AT (1) ATE153149T1 (en)
AU (1) AU6092894A (en)
CA (1) CA2153769C (en)
DE (1) DE69403192T2 (en)
WO (1) WO1994017474A1 (en)

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JPH08506200A (en) 1996-07-02
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US5751997A (en) 1998-05-12
EP0680634B1 (en) 1997-05-14

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