CA2376242A1 - Improved remote data copy using a prospective suspend command - Google Patents

Improved remote data copy using a prospective suspend command Download PDF

Info

Publication number
CA2376242A1
CA2376242A1 CA002376242A CA2376242A CA2376242A1 CA 2376242 A1 CA2376242 A1 CA 2376242A1 CA 002376242 A CA002376242 A CA 002376242A CA 2376242 A CA2376242 A CA 2376242A CA 2376242 A1 CA2376242 A1 CA 2376242A1
Authority
CA
Canada
Prior art keywords
controller
primary
remote data
data copy
recording devices
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
CA002376242A
Other languages
French (fr)
Other versions
CA2376242C (en
Inventor
Claus William Mikkelsen
William David Davenport
Michael John Dutch
Cynthia Anne Martinage
Richard Allan Ruehle
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.)
Hitachi Data System Corp
Original Assignee
Hitachi Data Systems Corporation
Claus William Mikkelsen
William David Davenport
Michael John Dutch
Cynthia Anne Martinage
Richard Allan Ruehle
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 Hitachi Data Systems Corporation, Claus William Mikkelsen, William David Davenport, Michael John Dutch, Cynthia Anne Martinage, Richard Allan Ruehle filed Critical Hitachi Data Systems Corporation
Publication of CA2376242A1 publication Critical patent/CA2376242A1/en
Application granted granted Critical
Publication of CA2376242C publication Critical patent/CA2376242C/en
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
    • G06F11/2071—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
    • G06F11/2074—Asynchronous techniques
    • 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
    • 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
    • Y10S707/99955—Archiving or backup

Abstract

In a computer system, the controller of one or more primary data recording devices sends update information to the controller of one or more secondary data recording devices to maintain a remote copy of data stored on the primary data recording devices. The primary controller receives a command from a computer that specifies a prospective suspend time after which remote copy operation is to be suspended. After the suspend time passes, the primary controller stops sending the update information to the secondary controller and begins storing indicators of the updated information in the cache
CA002376242A 1999-07-12 2000-07-07 Improved remote data copy using a prospective suspend command Expired - Fee Related CA2376242C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/352,549 US6539462B1 (en) 1999-07-12 1999-07-12 Remote data copy using a prospective suspend command
US09/352,549 1999-07-12
PCT/US2000/040330 WO2001004754A2 (en) 1999-07-12 2000-07-07 Remote data copy using a prospective suspend command

Publications (2)

Publication Number Publication Date
CA2376242A1 true CA2376242A1 (en) 2001-01-18
CA2376242C CA2376242C (en) 2009-01-13

Family

ID=23385590

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002376242A Expired - Fee Related CA2376242C (en) 1999-07-12 2000-07-07 Improved remote data copy using a prospective suspend command

Country Status (7)

Country Link
US (2) US6539462B1 (en)
EP (1) EP1204923B1 (en)
JP (1) JP2003504756A (en)
AU (1) AU6953600A (en)
CA (1) CA2376242C (en)
DE (1) DE60001460T2 (en)
WO (1) WO2001004754A2 (en)

Families Citing this family (101)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7114049B2 (en) * 1997-01-08 2006-09-26 Hitachi, Ltd. Adaptive remote copy in a heterogeneous environment
US6665781B2 (en) * 2000-10-17 2003-12-16 Hitachi, Ltd. Method and apparatus for data duplexing in storage unit system
US6988176B2 (en) * 1997-09-12 2006-01-17 Hitachi, Ltd. Method and apparatus for data duplexing in storage unit system
JP4689137B2 (en) * 2001-08-08 2011-05-25 株式会社日立製作所 Remote copy control method and storage system
JP2000305856A (en) 1999-04-26 2000-11-02 Hitachi Ltd Disk subsystems and integration system for them
US7167962B2 (en) 1999-08-19 2007-01-23 Hitachi, Ltd. Remote copy for a storage controller with reduced data size
FI19991811A (en) * 1999-08-25 2001-02-26 Nokia Networks Oy Method and system for backup
JP4434407B2 (en) * 2000-01-28 2010-03-17 株式会社日立製作所 Subsystem and integrated system thereof
JP4044717B2 (en) 2000-03-31 2008-02-06 株式会社日立製作所 Data duplication method and data duplication system for storage subsystem
KR100551669B1 (en) * 2000-05-29 2006-02-13 캐논 가부시끼가이샤 A method for enabling file format compatibility
US6766430B2 (en) * 2000-07-06 2004-07-20 Hitachi, Ltd. Data reallocation among storage systems
US6691245B1 (en) * 2000-10-10 2004-02-10 Lsi Logic Corporation Data storage with host-initiated synchronization and fail-over of remote mirror
US7194590B2 (en) * 2001-02-28 2007-03-20 Hitachi, Ltd. Three data center adaptive remote copy
EP1255198B1 (en) 2001-02-28 2006-11-29 Hitachi, Ltd. Storage apparatus system and method of data backup
US7164676B1 (en) * 2001-03-21 2007-01-16 Cisco Technology, Inc. Method and apparatus for a combined bulk and transactional database synchronous scheme
US7213114B2 (en) * 2001-05-10 2007-05-01 Hitachi, Ltd. Remote copy for a storage controller in a heterogeneous environment
US7143252B2 (en) * 2001-05-10 2006-11-28 Hitachi, Ltd. Storage apparatus system and method of data backup
JP2003006020A (en) * 2001-06-26 2003-01-10 Hitachi Ltd Duplicate data base access device and its accessing method
JP4175789B2 (en) * 2001-07-05 2008-11-05 株式会社日立製作所 File level remote copy method for storage device
US6640291B2 (en) * 2001-08-10 2003-10-28 Hitachi, Ltd. Apparatus and method for online data migration with remote copy
US6976139B2 (en) * 2001-11-14 2005-12-13 Emc Corporation Reversing a communication path between storage devices
US6862632B1 (en) 2001-11-14 2005-03-01 Emc Corporation Dynamic RDF system for transferring initial data between source and destination volume wherein data maybe restored to either volume at same time other data is written
US7406574B1 (en) * 2002-02-25 2008-07-29 Emc Corporation Management of invalid tracks
US7315960B2 (en) * 2002-05-31 2008-01-01 Hitachi, Ltd. Storage area network system
US7546482B2 (en) * 2002-10-28 2009-06-09 Emc Corporation Method and apparatus for monitoring the storage of data in a computer system
JP4136615B2 (en) 2002-11-14 2008-08-20 株式会社日立製作所 Database system and database access method
JP2004178254A (en) * 2002-11-27 2004-06-24 Hitachi Ltd Information processing system, storage system, storage device controller and program
JP4704660B2 (en) * 2002-12-18 2011-06-15 株式会社日立製作所 Storage device control device control method, storage device control device, and program
FI20022297A (en) * 2002-12-31 2004-07-01 Nokia Corp A method for comparing the contents of memory components
US7024584B2 (en) * 2003-01-09 2006-04-04 International Business Machines Corporation Method, system, and article of manufacture for maintaining data integrity
JP3974538B2 (en) * 2003-02-20 2007-09-12 株式会社日立製作所 Information processing system
JP4165747B2 (en) * 2003-03-20 2008-10-15 株式会社日立製作所 Storage system, control device, and control device program
JP2004303122A (en) * 2003-04-01 2004-10-28 Hitachi Ltd Data transfer control system
US7111004B2 (en) * 2003-06-18 2006-09-19 International Business Machines Corporation Method, system, and program for mirroring data between sites
US20050015416A1 (en) 2003-07-16 2005-01-20 Hitachi, Ltd. Method and apparatus for data recovery using storage based journaling
US7111136B2 (en) * 2003-06-26 2006-09-19 Hitachi, Ltd. Method and apparatus for backup and recovery system using storage based journaling
US20050022213A1 (en) 2003-07-25 2005-01-27 Hitachi, Ltd. Method and apparatus for synchronizing applications for data recovery using storage based journaling
US7398422B2 (en) * 2003-06-26 2008-07-08 Hitachi, Ltd. Method and apparatus for data recovery system using storage based journaling
JP4124348B2 (en) * 2003-06-27 2008-07-23 株式会社日立製作所 Storage system
US7240080B2 (en) * 2003-07-30 2007-07-03 International Business Machines Corporation Method and apparatus for determining using least recently used protocol if one or more computer files should be written to one or more information storage media and synchronously providing one or more computer files between first and storage devices
US7219201B2 (en) * 2003-09-17 2007-05-15 Hitachi, Ltd. Remote storage disk control device and method for controlling the same
JP4598387B2 (en) * 2003-09-17 2010-12-15 株式会社日立製作所 Storage system
CA2548542C (en) * 2003-11-13 2011-08-09 Commvault Systems, Inc. System and method for performing a snapshot and for restoring data
JP2005157712A (en) 2003-11-26 2005-06-16 Hitachi Ltd Remote copy network
US7724599B2 (en) * 2003-12-03 2010-05-25 Hitachi, Ltd. Remote copy system
US7478211B2 (en) * 2004-01-09 2009-01-13 International Business Machines Corporation Maintaining consistency for remote copy using virtualization
US20050154786A1 (en) * 2004-01-09 2005-07-14 International Business Machines Corporation Ordering updates in remote copying of data
JP4551096B2 (en) * 2004-02-03 2010-09-22 株式会社日立製作所 Storage subsystem
US7363541B2 (en) * 2004-02-23 2008-04-22 Hewlett-Packard Development Company, L.P. Command management using task attributes
JP4512386B2 (en) * 2004-03-05 2010-07-28 株式会社日立製作所 Backup system and method
US7120769B2 (en) * 2004-03-08 2006-10-10 Hitachi, Ltd. Point in time remote copy for multiple sites
US7739352B2 (en) * 2004-04-23 2010-06-15 Oracle America, Inc. System and method for facilitating a consistent point-in time copy
US7360123B1 (en) 2004-06-30 2008-04-15 Symantec Operating Corporation Conveying causal relationships between at least three dimensions of recovery management
US7325161B1 (en) * 2004-06-30 2008-01-29 Symantec Operating Corporation Classification of recovery targets to enable automated protection setup
US7360110B1 (en) 2004-06-30 2008-04-15 Symantec Operating Corporation Parameterization of dimensions of protection systems and uses thereof
GB0416074D0 (en) * 2004-07-17 2004-08-18 Ibm Controlling data consistency guarantees in storage apparatus
JP4575059B2 (en) * 2004-07-21 2010-11-04 株式会社日立製作所 Storage device
JP4508798B2 (en) * 2004-08-09 2010-07-21 株式会社日立製作所 Storage remote copy method
JP4646574B2 (en) * 2004-08-30 2011-03-09 株式会社日立製作所 Data processing system
US7139782B2 (en) * 2004-09-21 2006-11-21 Hitachi, Ltd. Method of and system for testing remote storage
US7606844B2 (en) 2005-12-19 2009-10-20 Commvault Systems, Inc. System and method for performing replication copy storage operations
US7617262B2 (en) * 2005-12-19 2009-11-10 Commvault Systems, Inc. Systems and methods for monitoring application data in a data replication system
US8661216B2 (en) 2005-12-19 2014-02-25 Commvault Systems, Inc. Systems and methods for migrating components in a hierarchical storage network
US7651593B2 (en) 2005-12-19 2010-01-26 Commvault Systems, Inc. Systems and methods for performing data replication
AU2006331932B2 (en) 2005-12-19 2012-09-06 Commvault Systems, Inc. Systems and methods for performing data replication
US7636743B2 (en) * 2005-12-19 2009-12-22 Commvault Systems, Inc. Pathname translation in a data replication system
US7962709B2 (en) * 2005-12-19 2011-06-14 Commvault Systems, Inc. Network redirector systems and methods for performing data replication
JP4920291B2 (en) 2006-04-18 2012-04-18 株式会社日立製作所 Computer system, access control method, and management computer
US8726242B2 (en) 2006-07-27 2014-05-13 Commvault Systems, Inc. Systems and methods for continuous data replication
WO2008039057A1 (en) * 2006-09-25 2008-04-03 Intellimagic Optimising remote mirroring resynchronisation
US8290808B2 (en) * 2007-03-09 2012-10-16 Commvault Systems, Inc. System and method for automating customer-validated statement of work for a data storage environment
JP2009211343A (en) * 2008-03-04 2009-09-17 Kddi Corp Server device and communication system
DE102008025502A1 (en) * 2008-05-28 2009-12-03 Ab Skf Bearing i.e. single row angular ball bearing, mounting device for differential gearbox in motor vehicle, has inner ring and roller bodies arranged in cage, where ring and bodies in cage are connected with each other in loss-proof manner
US8204859B2 (en) 2008-12-10 2012-06-19 Commvault Systems, Inc. Systems and methods for managing replicated database data
US9495382B2 (en) * 2008-12-10 2016-11-15 Commvault Systems, Inc. Systems and methods for performing discrete data replication
JP4990332B2 (en) * 2009-08-25 2012-08-01 株式会社日立製作所 Data backup management system, computer system and program recording medium
US8504517B2 (en) * 2010-03-29 2013-08-06 Commvault Systems, Inc. Systems and methods for selective data replication
US8352422B2 (en) 2010-03-30 2013-01-08 Commvault Systems, Inc. Data restore systems and methods in a replication environment
US8725698B2 (en) 2010-03-30 2014-05-13 Commvault Systems, Inc. Stub file prioritization in a data replication system
US8504515B2 (en) 2010-03-30 2013-08-06 Commvault Systems, Inc. Stubbing systems and methods in a data replication environment
US8489656B2 (en) 2010-05-28 2013-07-16 Commvault Systems, Inc. Systems and methods for performing data replication
US9298715B2 (en) 2012-03-07 2016-03-29 Commvault Systems, Inc. Data storage system utilizing proxy device for storage operations
US9471578B2 (en) 2012-03-07 2016-10-18 Commvault Systems, Inc. Data storage system utilizing proxy device for storage operations
US9342537B2 (en) 2012-04-23 2016-05-17 Commvault Systems, Inc. Integrated snapshot interface for a data storage system
US9886346B2 (en) 2013-01-11 2018-02-06 Commvault Systems, Inc. Single snapshot for multiple agents
US9262435B2 (en) 2013-01-11 2016-02-16 Commvault Systems, Inc. Location-based data synchronization management
US11176111B2 (en) * 2013-03-15 2021-11-16 Nuodb, Inc. Distributed database management system with dynamically split B-tree indexes
US9639426B2 (en) 2014-01-24 2017-05-02 Commvault Systems, Inc. Single snapshot for multiple applications
US9632874B2 (en) 2014-01-24 2017-04-25 Commvault Systems, Inc. Database application backup in single snapshot for multiple applications
US9753812B2 (en) 2014-01-24 2017-09-05 Commvault Systems, Inc. Generating mapping information for single snapshot for multiple applications
US9495251B2 (en) 2014-01-24 2016-11-15 Commvault Systems, Inc. Snapshot readiness checking and reporting
US10042716B2 (en) 2014-09-03 2018-08-07 Commvault Systems, Inc. Consolidated processing of storage-array commands using a forwarder media agent in conjunction with a snapshot-control media agent
US9774672B2 (en) 2014-09-03 2017-09-26 Commvault Systems, Inc. Consolidated processing of storage-array commands by a snapshot-control media agent
US9648105B2 (en) 2014-11-14 2017-05-09 Commvault Systems, Inc. Unified snapshot storage management, using an enhanced storage manager and enhanced media agents
US9448731B2 (en) 2014-11-14 2016-09-20 Commvault Systems, Inc. Unified snapshot storage management
US10496320B2 (en) * 2015-12-28 2019-12-03 Netapp Inc. Synchronous replication
US10503753B2 (en) 2016-03-10 2019-12-10 Commvault Systems, Inc. Snapshot replication operations based on incremental block change tracking
US9933953B1 (en) * 2016-06-30 2018-04-03 EMC IP Holding Company LLC Managing copy sessions in a data storage system to control resource consumption
US10740022B2 (en) 2018-02-14 2020-08-11 Commvault Systems, Inc. Block-level live browsing and private writable backup copies using an ISCSI server
US11042318B2 (en) 2019-07-29 2021-06-22 Commvault Systems, Inc. Block-level data replication
US11809285B2 (en) 2022-02-09 2023-11-07 Commvault Systems, Inc. Protecting a management database of a data storage management system to meet a recovery point objective (RPO)

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5051887A (en) 1987-08-25 1991-09-24 International Business Machines Corporation Maintaining duplex-paired storage devices during gap processing using of a dual copy function
US5155845A (en) 1990-06-15 1992-10-13 Storage Technology Corporation Data storage system for providing redundant copies of data on different disk drives
US5544347A (en) 1990-09-24 1996-08-06 Emc Corporation Data storage system controlled remote data mirroring with respectively maintained data indices
US5263154A (en) 1992-04-20 1993-11-16 International Business Machines Corporation Method and system for incremental time zero backup copying of data
US5448718A (en) 1992-04-20 1995-09-05 International Business Machines Corporation Method and system for time zero backup session security
US5241669A (en) 1992-04-20 1993-08-31 International Business Machines Corporation Method and system for sidefile status polling in a time zero backup copy process
US5241670A (en) 1992-04-20 1993-08-31 International Business Machines Corporation Method and system for automated backup copy ordering in a time zero backup copy session
JP2888401B2 (en) 1992-08-03 1999-05-10 インターナショナル・ビジネス・マシーンズ・コーポレイション Synchronization method for redundant disk drive arrays
US5375232A (en) 1992-09-23 1994-12-20 International Business Machines Corporation Method and system for asynchronous pre-staging of backup copies in a data processing storage subsystem
US5497483A (en) 1992-09-23 1996-03-05 International Business Machines Corporation Method and system for track transfer control during concurrent copy operations in a data processing storage subsystem
US5404508A (en) 1992-12-03 1995-04-04 Unisys Corporation Data base backup and recovery system and method
US5446871A (en) 1993-03-23 1995-08-29 International Business Machines Corporation Method and arrangement for multi-system remote data duplexing and recovery
US5555371A (en) 1992-12-17 1996-09-10 International Business Machines Corporation Data backup copying with delayed directory updating and reduced numbers of DASD accesses at a back up site using a log structured array data storage
US5577222A (en) 1992-12-17 1996-11-19 International Business Machines Corporation System for asynchronously duplexing remote data by sending DASD data grouped as a unit periodically established by checkpoint based upon the latest time value
US5579474A (en) * 1992-12-28 1996-11-26 Hitachi, Ltd. Disk array system and its control method
US5504883A (en) * 1993-02-01 1996-04-02 Lsc, Inc. Method and apparatus for insuring recovery of file control information for secondary storage systems
KR0128271B1 (en) * 1994-02-22 1998-04-15 윌리암 티. 엘리스 Remote data duplexing
US5615329A (en) 1994-02-22 1997-03-25 International Business Machines Corporation Remote data duplexing
US5504861A (en) * 1994-02-22 1996-04-02 International Business Machines Corporation Remote data duplexing
US5574950A (en) 1994-03-01 1996-11-12 International Business Machines Corporation Remote data shadowing using a multimode interface to dynamically reconfigure control link-level and communication link-level
JP2894676B2 (en) 1994-03-21 1999-05-24 インターナショナル・ビジネス・マシーンズ・コーポレイション Asynchronous remote copy system and asynchronous remote copy method
US5623599A (en) 1994-07-29 1997-04-22 International Business Machines Corporation Method and apparatus for processing a synchronizing marker for an asynchronous remote data copy
US5692155A (en) * 1995-04-19 1997-11-25 International Business Machines Corporation Method and apparatus for suspending multiple duplex pairs during back up processing to insure storage devices remain synchronized in a sequence consistent order
US5720029A (en) 1995-07-25 1998-02-17 International Business Machines Corporation Asynchronously shadowing record updates in a remote copy session using track arrays
JP3414218B2 (en) * 1997-09-12 2003-06-09 株式会社日立製作所 Storage controller
US6301643B1 (en) * 1998-09-03 2001-10-09 International Business Machines Corporation Multi-environment data consistency

Also Published As

Publication number Publication date
WO2001004754A3 (en) 2001-09-13
AU6953600A (en) 2001-01-30
EP1204923A2 (en) 2002-05-15
EP1204923B1 (en) 2003-02-19
US20030182526A1 (en) 2003-09-25
DE60001460D1 (en) 2003-03-27
WO2001004754A2 (en) 2001-01-18
US6789178B2 (en) 2004-09-07
US6539462B1 (en) 2003-03-25
JP2003504756A (en) 2003-02-04
DE60001460T2 (en) 2003-10-23
CA2376242C (en) 2009-01-13

Similar Documents

Publication Publication Date Title
CA2376242A1 (en) Improved remote data copy using a prospective suspend command
EP1039387A3 (en) System and method for replicating data
EP0825535A3 (en) A server controller for storing and retrieving sequences of video screens forwarded by a server host computer
EP1538527A3 (en) Remote copy system
EP0902370A3 (en) Dual storage controllers
EP0810580A3 (en) Data conversion apparatus for pseudo-interactive data communication system
EP1505504A3 (en) Remote copy system
EP1435575A3 (en) Method and apparatus for maintaining consistency of data stored in a group of mirroring devices
TW200622619A (en) Fat analysis for optimized sequential cluster management
EP1510921A3 (en) Remote copy storage system
EP1058190A3 (en) Data backup method
EP0997817A3 (en) Information storage system
EP1804165A3 (en) Snapshot system
EP2254053A3 (en) Fat analysis for optimized sequential cluster management
EP1251700A3 (en) Content-data management system
EP0825536A3 (en) A server controller configured to snoop and receive a duplicate copy of display data presented to a video controller
EP1569119A3 (en) Remote mirroring system, device, and method
BR0317999A (en) Information security and retrieval communication system and method
DE69224775T2 (en) Computer system administrator
EP1669849A3 (en) Copy controller and method thereof
JP2004185349A5 (en)
EP0375141A3 (en) Remote display control
GB2382899B (en) A data queue system
DE60205809D1 (en) Data control system, electronic device and data transfer control method
EP1115050A3 (en) General purpose computer and copyright management method for use therein

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20160707