US Patent No: 5,901,327

Number of patents in Portfolio can not be more than 2000

Bundling of write data from channel commands in a command chain for transmission over a data link between data storage systems for remote data mirroring

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Abstract

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Two data storage systems are interconnected by a data link for remote mirroring of data. Each volume of data is configured as local, primary in a remotely mirrored volume pair, or secondary in a remotely mirrored volume pair. Normally, a host computer directly accesses either a local or a primary volume, and data written to a primary volume is automatically sent over the data link to a corresponding secondary volume. The host computer sends chains of channel commands to the data storage system containing a primary (R1) volume of a remotely mirrored volume pair. In order to more effectively use the capacity of the data link, the data storage system containing the primary (R1) volume bundles the write data for all write commands in the chain into a single write command for transmission over the data link to the secondary data storage system containing the secondary (R2) volume. The data storage system containing the primary (R1) volume decodes the channel commands to determine when it has received the last channel command in the chain, and once the last channel command in the chain is received, it transmits the bundle of write data for the chain over the data link to the data storage system containing the secondary (R2) volume. In a preferred implementation, the write data is stored in a cache memory in the data storage system containing the primary (R1) volume, and the data storage system containing the primary (R1) volume bundles the write data by accumulating, in a buffer, pointers to the write data in the cache memory.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
EMC CORPORATIONHOPKINTON, MA4254

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ofek, Yuval Hopkinton, MA 73 5780

Cited Art Landscape

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Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
COMMVAULT SYSTEMS, INC. (298)
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7,003,641 Logical view with granular access to exchange data managed by a modular data and storage management system 126 2001
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7,401,154 Pipelined high speed data transfer mechanism 32 2002
7,346,623 System and method for generating and managing quick recovery volumes 190 2002
7,107,298 System and method for archiving objects in an information store 151 2002
7,287,047 Selective data replication system and method 120 2002
7,130,970 Dynamic storage device pooling in a computer system 203 2003
8,370,542 Combined stream auxiliary copy system and method 1 2003
7,162,496 System and method for blind media support 46 2003
7,568,080 Snapshot storage and management system with indexing and user interface 36 2003
7,447,692 Logical view and access to data managed by a modular data and storage management system 34 2003
7,631,351 System and method for performing storage operations through a firewall 12 2004
7,596,586 System and method for extended media retention 90 2004
7,246,207 System and method for dynamically performing storage operations in a computer network 198 2004
7,174,433 System and method for dynamically sharing media in a computer network 60 2004
7,454,569 Hierarchical system and method for performing storage operations in a computer network 145 2004
7,546,324 Systems and methods for performing storage operations using network attached storage 79 2004
7,539,707 System and method for performing an image level snapshot and for restoring partial volume data 41 2004
7,529,782 System and method for performing a snapshot and for restoring data 56 2004
7,440,982 System and method for stored data archive verification 73 2004
7,315,923 System and method for combining data streams in pipelined storage operations in a storage network 81 2004
7,277,941 System and method for providing encryption in a storage network by storing a secured encryption key with encrypted archive data in an archive storage device 40 2004
7,581,077 Method and system for transferring data in a storage operation 69 2005
7,346,751 Systems and methods for generating a storage-related metric 91 2005
7,343,356 Systems and methods for storage modeling and costing 85 2005
7,343,453 Hierarchical systems and methods for providing a unified view of storage information 85 2005
7,343,459 Systems and methods for detecting & mitigating storage risks 94 2005
7,975,061 System and method for performing multistream storage operations 21 2005
7,809,914 Methods and system of pooling storage devices 58 2005
7,765,369 Method and system for selectively deleting stored data 37 2005
7,500,053 Method and system for grouping storage system components 119 2005
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7,490,207 System and method for performing auxillary storage operations 118 2005
7,315,924 Logical view with granular access to exchange data managed by a modular data and storage management system 29 2005
7,620,710 System and method for performing multi-path storage operations 42 2005
7,613,748 Stored data reverification management system and method 101 2005
7,606,844 System and method for performing replication copy storage operations 68 2005
7,603,518 System and method for improved media identification in a storage device 18 2005
7,584,227 System and method for containerized data storage and tracking 36 2005
7,543,125 System and method for performing time-flexible calendric storage operations 65 2005
7,457,790 Extensible configuration engine system and method 17 2005
7,472,142 System and method for archiving objects in an information store 11 2006
7,409,509 Dynamic storage device pooling in a computer system 86 2006
8,271,548 Systems and methods for using metadata to enhance storage operations 5 2006
7,937,393 Systems and methods for classifying and transferring information in a storage network 26 2006
7,849,059 Data classification systems and methods for organizing a metabase 21 2006
7,831,795 Systems and methods for classifying and transferring information in a storage network 34 2006
7,822,749 Systems and methods for classifying and transferring information in a storage network 16 2006
7,801,864 Systems and methods for using metadata to enhance data identification operations 34 2006
7,747,579 Metabase for facilitating data classification 48 2006
7,734,593 Systems and methods for classifying and transferring information in a storage network 31 2006
7,725,671 System and method for providing redundant access to metadata over a network 17 2006
7,707,178 Systems and methods for classifying and transferring information in a storage network 17 2006
7,668,884 Systems and methods for classifying and transferring information in a storage network 50 2006
7,660,800 Systems and methods for classifying and transferring information in a storage network 16 2006
7,660,807 Systems and methods for cataloging metadata for a metabase 32 2006
7,657,550 User interfaces and methods for managing data in a metabase 50 2006
7,631,151 Systems and methods for classifying and transferring information in a storage network 16 2006
7,613,752 Systems and methods for using metadata to enhance data management operations 39 2006
7,844,676 Email attachment management in a computer system 29 2006
7,603,386 Systems and methods for managing location of media in a storage system 14 2006
8,661,216 Systems and methods for migrating components in a hierarchical storage network 0 2006
8,655,850 Systems and methods for resynchronizing information 1 2006
8,572,330 Systems and methods for granular resource management in a storage network 0 2006
8,266,406 System and method for allocation of organizational resources 12 2006
8,677,091 Writing data and storage system specific metadata to network attached storage device 0 2006
7,962,709 Network redirector systems and methods for performing data replication 43 2006
7,870,355 Log based data replication system with disk swapping below a predetermined rate 37 2006
7,818,262 System and method for providing a flexible licensing system for digital content 9 2006
7,661,028 Rolling cache configuration for a data replication system 74 2006
7,651,593 Systems and methods for performing data replication 81 2006
7,636,743 Pathname translation in a data replication system 59 2006
7,617,253 Destination systems and methods for performing data replication 58 2006
7,617,262 Systems and methods for monitoring application data in a data replication system 66 2006
8,726,242 Systems and methods for continuous data replication 1 2006
8,719,809 Point in time rollback and un-installation of software 0 2006
7,380,072 Systems and methods for sharing media in a computer network 95 2007
8,655,914 System and method for storage operation access security 1 2007
8,346,733 Systems and methods of media management, such as management of media to and from a media storage library 2 2007
7,882,077 Method and system for offline indexing of content and classifying stored data 37 2007
7,734,669 Managing copies of data 26 2007
7,539,783 Systems and methods of media management, such as management of media to and from a media storage library, including removable media 17 2007
8,112,605 System and method for allocation of organizational resources 12 2007
7,802,067 Interface systems and methods for accessing stored data 20 2007
7,484,054 System and method for performing storage operations in a computer network 79 2007
7,739,381 System and method for providing encryption in storage operations in a storage network, such as for use by application service providers that provide data storage services 8 2007
7,792,789 Method and system for collaborative searching 17 2007
7,831,566 Systems and methods of hierarchical storage management, such as global management of storage operations 17 2007
8,140,786 Systems and methods for creating copies of data, such as archive copies 34 2007
8,832,706 Systems and methods of data storage management, such as dynamic data stream allocation 0 2007
8,312,323 Systems and methods for remote monitoring in a computer network and reporting a failed migration operation without accessing the data being moved 1 2007
7,840,537 System and method for storing redundant information 138 2007
8,775,823 System and method for encrypting secondary copies of data 0 2007
7,765,167 Systems and methods for storage modeling and costing 31 2008
7,644,245 Systems and methods for detecting and mitigating storage risks 24 2008
8,055,625 System and method for generating and managing quick recovery volumes 6 2008
8,296,301 Systems and methods for probabilistic data classification 0 2008
7,836,174 Systems and methods for grid-based data scanning 4 2008
8,290,808 System and method for automating customer-validated statement of work for a data storage environment 4 2008
8,170,995 Method and system for offline indexing of content and classifying stored data 8 2008
8,108,427 System and method for storage operation access security 10 2008
8,037,028 System and method for storing redundant information 23 2008
7,953,706 System and method for storing redundant information 15 2008
7,937,365 Method and system for searching stored data 20 2008
7,882,098 Method and system for searching stored data 6 2008
7,657,666 Systems and methods of media management, such as management of media to and from a media storage library, including removable media 12 2008
8,510,573 System and method for encrypting secondary copies of data 0 2008
8,484,165 Systems and methods of media management, such as management of media to and from a media storage library 2 2008
8,468,538 Systems and methods of data storage management, such as dynamic data stream allocation 0 2008
8,402,000 Systems and methods of media management, such as management of media to and from a media storage library 4 2008
8,346,734 Systems and methods of media management, such as management of media to and from a media storage library 2 2008
8,341,182 Systems and methods of media management, such as management of media to and from a media storage library 0 2008
7,917,473 Systems and methods of hierarchical storage management, such as global management of storage operations 15 2008
7,865,517 Managing copies of data 13 2008
7,814,118 Managing copies of data 16 2008
7,877,351 Hierarchical systems and methods for performing data storage operations 30 2008
7,769,961 Systems and methods for sharing media in a computer network 32 2008
8,433,679 Modular systems and methods for managing data storage operations 3 2008
8,769,048 Data protection scheduling, such as providing a flexible backup window in a data protection system 0 2008
8,352,954 Data storage resource allocation by employing dynamic methods and blacklisting resource request pools 1 2008
8,219,524 Application-aware and remote single instance data management 47 2008
7,962,642 Pipeline systems and method for transferring data in a network environment 5 2008
8,335,776 Distributed indexing system for data storage 12 2008
8,166,263 Continuous data protection over intermittent connections, such as continuous data backup for laptops or wireless devices 27 2008
7,827,363 Systems and methods for allocating control of storage media in a network environment 18 2008
8,707,070 Power management of data processing resources, such as power adaptive management of data storage operations 1 2008
7,937,702 Storage of application specific profiles correlating to document versions 13 2008
8,706,976 Parallel access virtual tape library and drives 0 2008
8,156,086 Systems and methods for stored data verification 1 2008
8,055,627 System and method for archiving objects in an information store 11 2008
8,103,670 Systems and methods for retrieving data in a computer network 7 2008
7,757,043 Hierarchical systems and methods for performing storage operations in a computer network 28 2008
7,873,802 Systems and methods for recovering electronic information from a storage medium 30 2008
7,962,714 System and method for performing auxiliary storage operations 6 2008
7,739,459 Systems and methods for performing storage operations in a computer network 30 2009
7,739,450 System and method for improved media identification in a storage device 16 2009
7,849,266 Method and system for grouping storage system components 33 2009
8,161,003 Selective data replication system and method 7 2009
8,195,623 System and method for performing a snapshot and for restoring data 19 2009
8,204,859 Systems and methods for managing replicated database data 23 2009
7,949,512 Systems and methods for performing virtual storage operations 15 2009
7,840,533 System and method for performing an image level snapshot and for restoring partial volume data 35 2009
7,890,719 System and method for performing time-flexible calendric storage operations 5 2009
7,877,362 System and method for containerized data storage and tracking 17 2009
7,873,806 Snapshot storage and management system with indexing and user interface 18 2009
8,019,963 Systems and methods for transferring data in a block-level storage operation 9 2009
8,370,442 Method and system for leveraging identified changes to a mail server 1 2009
8,209,293 System and method for extended media retention 7 2009
8,725,688 Image level copy or restore, such as image level restore without knowledge of data object metadata 0 2009
8,307,177 Systems and methods for management of virtualization data 6 2009
7,844,573 Systems and methods for managing location of media in a storage system 0 2009
8,024,294 Systems and methods for performing replication copy storage operations 27 2009
8,121,983 Systems and methods for monitoring application data in a data replication system 24 2009
8,346,825 Stored data reverification management system and method 0 2009
8,131,680 Systems and methods for using metadata to enhance data management operations 6 2009
8,296,475 Systems and methods for performing multi-path storage operations 1 2009
8,412,677 Systems and methods for byte-level or quasi byte-level single instancing 1 2009
7,962,455 Pathname translation in a data replication system 34 2009
8,271,830 Rolling cache configuration for a data replication system 21 2009
8,434,131 Managing connections in a data storage system 1 2009
8,578,120 Block-level single instancing 0 2009
7,861,011 Systems and methods of media management, such as management of media to and from a media storage library, including removable media 11 2009
8,401,996 Storing a variable number of instances of data objects 5 2009
8,285,684 Systems and methods for performing data replication 13 2010
8,051,095 Systems and methods for classifying and transferring information in a storage network 8 2010
7,831,553 Systems and methods for classifying and transferring information in a storage network 61 2010
8,352,433 Modular backup and retrieval system used in conjunction with a storage area network 4 2010
8,484,162 De-duplication systems and methods for application-specific data 3 2010
8,504,517 Systems and methods for selective data replication 10 2010
8,725,698 Stub file prioritization in a data replication system 0 2010
8,504,515 Stubbing systems and methods in a data replication environment 9 2010
8,352,422 Data restore systems and methods in a replication environment 16 2010
8,849,955 Cloud storage and networking agents, including agents for utilizing multiple, different cloud storage sites 0 2010
8,612,439 Performing data storage operations in a cloud storage environment, including searching, encryption and indexing 2 2010
8,407,190 Performing data storage operations with a cloud environment, including containerized deduplication, data pruning, and data transfer 5 2010
8,285,681 Data object store and server for a cloud storage environment, including data deduplication and data management across multiple cloud storage sites 20 2010
7,831,622 Systems and methods for classifying and transferring information in a storage network 41 2010
8,073,969 Systems and methods for facilitating storage operations using network attached storage devices 4 2010
7,979,389 System and method for performing integrated storage operations 9 2010
7,882,093 Managing copies of data 13 2010
8,429,428 System and method for providing encryption in storage operations in a storage network, such as for use by application service providers that provide data storage services 1 2010
7,987,319 System and method for improved media identification in a storage device 15 2010
8,103,829 Hierarchical systems and methods for performing storage operations in a computer network 6 2010
8,285,685 Metabase for facilitating data classification 3 2010
8,032,718 Systems and methods for sharing media in a computer network 12 2010
8,306,926 Systems and methods for storage modeling and costing 5 2010
8,396,838 Legal compliance, electronic discovery and electronic document handling of online and offline copies of data 3 2010
8,131,725 Systems and methods for using metadata to enhance data identification operations 7 2010
8,086,809 Interface systems and methods for accessing stored data 8 2010
8,074,042 Methods and system of pooling storage devices 13 2010
8,041,905 Systems and methods for allocating control of storage media in a network environment 12 2010
8,010,769 Systems and methods for classifying and transferring information in a storage network 10 2010
8,356,018 Systems and methods for grid-based data scanning 0 2010
8,190,565 System and method for performing an image level snapshot and for restoring partial volume data 17 2010
7,958,086 Systems and methods for managing location of media in a storage system 0 2010
8,214,444 Email attachment management in a computer system 8 2010
7,958,307 Method and system for grouping storage system components 14 2010
8,131,964 Systems and methods for combining data streams in a storage operation 6 2010
8,234,417 Systems and methods of media management, such as management of media to and from a media storage library, including removable media 8 2010
8,037,031 Method and system for offline indexing of content and classifying stored data 8 2010
8,442,983 Asynchronous methods of data classification using change journals and other data structures 3 2010
8,595,191 Systems and methods for performing data management operations using snapshots 0 2010
8,433,682 Systems and methods for analyzing snapshots 2 2010
8,577,851 Content aligned block-based deduplication 0 2010
8,578,109 Systems and methods for retaining and using data block signatures in data protection operations 0 2010
8,572,340 Systems and methods for retaining and using data block signatures in data protection operations 0 2010
8,364,652 Content aligned block-based deduplication 4 2010
8,140,794 Snapshot storage and management system with indexing and user interface 10 2011
8,041,673 Hierarchical systems and methods for performing data storage operations 12 2011
7,984,063 Managing copies of data 11 2011
8,832,031 Systems and methods of hierarchical storage management, such as global management of storage operations 0 2011
8,505,010 Storage of application specific profiles correlating to document versions 2 2011
8,099,428 Managing copies of data 4 2011
8,849,762 Restoring computing environments, such as autorecovery of file systems at certain points in time 0 2011
8,719,264 Creating secondary copies of data based on searches for content 0 2011
8,719,767 Utilizing snapshots to provide builds to developer computing devices 0 2011
8,706,867 Realtime streaming of multimedia content from secondary storage devices 0 2011
8,234,249 Method and system for searching stored data 5 2011
8,230,195 System and method for performing auxiliary storage operations 4 2011
8,589,347 Systems and methods for performing data replication 8 2011
8,572,038 Systems and methods for performing data replication 7 2011
8,489,656 Systems and methods for performing data replication 11 2011
8,443,142 Method and system for grouping storage system components 3 2011
8,131,780 Systems and methods for managing location of media in a storage system 0 2011
8,326,915 Pipeline systems and method for transferring data in a network environment 2 2011
8,112,543 System and method for performing multistream storage operations 1 2011
8,285,671 System and method for performing integrated storage operations 3 2011
8,230,171 System and method for improved media identification in a storage device 7 2011
8,285,964 Systems and methods for classifying and transferring information in a storage network 6 2011
8,239,654 Systems and methods for transferring data in a block-level storage operation 4 2011
8,463,751 Systems and methods for performing replication copy storage operations 13 2011
8,620,870 Efficient data management improvements, such as docking limited-feature data management modules to a full-featured data management system 1 2011
8,612,394 System and method for archiving objects in an information store 0 2011
8,447,728 System and method for storage operation access security 2 2011
8,442,944 System and method for generating and managing quick recovery volumes 2 2011
8,285,683 System and method for storing redundant information 4 2011
8,341,359 Systems and methods for sharing media and path management in a computer network 4 2011
8,566,278 Hierarchical systems and methods for performing data storage operations 2 2011
8,291,177 Systems and methods for allocating control of storage media in a network environment 1 2011
8,266,106 Systems and methods for performing storage operations using network attached storage 5 2011
8,402,244 Methods and system of pooling storage devices 3 2011
8,266,397 Interface systems and methods for accessing stored data 5 2011
8,229,954 Managing copies of data 8 2012
8,725,731 Systems and methods for retrieving data in a computer network 0 2012
8,402,219 Hierarchical systems and methods for performing storage operations in a computer network 2 2012
8,281,028 System and method for performing multistream storage operations 1 2012
8,417,908 Systems and methods for combining data streams in a storage operation 0 2012
8,352,472 Systems and methods for using metadata to enhance data identification operations 2 2012
8,433,872 Snapshot storage and management system with indexing and user interface 2 2012
8,392,677 Systems and methods for creating copies of data, such as archive copies 1 2012
8,380,957 Continuous data protection over intermittent connections, such as continuous data backup for laptops or wireless devices 1 2012
8,364,914 Systems and methods for performing storage operations in a computer network 4 2012
8,645,320 System and method for performing an image level snapshot and for restoring partial volume data 1 2012
8,504,634 Email attachment management in a computer system 2 2012
8,666,942 Systems and methods for managing snapshots of replicated databases 1 2012
8,463,753 System and method for extended media retention 3 2012
8,539,118 Systems and methods of media management, such as management of media to and from a media storage library, including removable media 0 2012
8,782,064 Managing copies of data 0 2012
8,725,964 Interface systems and methods for accessing stored data 0 2012
8,725,980 System and method for allocation of organizational resources 0 2012
8,577,844 Systems and methods for performing storage operations using network attached storage 2 2012
8,428,995 System and method for automating customer-validated statement of work for a data storage environment 1 2012
8,725,737 Systems and methods for using metadata to enhance data identification operations 1 2012
8,793,221 Systems and methods for performing data replication 0 2012
8,656,218 Memory configuration for data replication system including identification of a subsequent log entry by a destination computer 1 2012
8,650,445 Systems and methods for remote monitoring in a computer network 0 2012
8,849,761 Data object store and server for a cloud storage environment, including data deduplication and data management across multiple cloud storage sites 0 2012
8,712,969 System and method for storing redundant information 0 2012
8,706,993 Systems and methods for storage modeling and costing 0 2012
8,612,714 Systems and methods for classifying and transferring information in a storage network 0 2012
8,583,594 System and method for performing integrated storage operations 0 2012
8,510,516 Systems and methods for sharing media in a computer network 3 2012
8,504,741 Systems and methods for performing multi-path storage operations 0 2012
8,725,973 Systems and methods for management of virtualization data 0 2012
8,805,807 Distributed indexing system for data storage 0 2012
8,756,203 Systems and methods of media management, such as management of media to and from a media storage library 0 2012
8,667,189 Combined stream auxiliary copy system and method 0 2013
8,688,931 Systems and methods for performing storage operations in a computer network 1 2013
8,612,707 Continuous data protection over intermittent connections, such as continuous data backup for laptops or wireless devices 0 2013
8,799,613 Methods and system of pooling storage devices 0 2013
8,799,051 System and method for automating customer-validated statement of work for a data storage environment 0 2013
8,725,687 Systems and methods for byte-level or quasi byte-level single instancing 0 2013
8,769,635 Managing connections in a data storage system 0 2013
8,725,694 Systems and methods for performing replication copy storage operations 0 2013
8,655,846 System and method for generating and managing quick recovery volumes 0 2013
8,762,335 System and method for storage operation access security 1 2013
8,656,068 Systems and methods of media management, such as management of media to and from a media storage library, including removable media 0 2013
8,868,494 Systems and methods for selective data replication 0 2013
8,886,853 Systems and methods for uniquely identifying removable media by its manufacturing defects wherein defects includes bad memory or redundant cells or both 0 2013
8,745,105 Systems and methods for performing data replication 0 2013
8,838,923 Continuous data protection over intermittent connections, such as continuous data backup for laptops or wireless devices 0 2013
8,832,406 Systems and methods for classifying and transferring information in a storage network 0 2013
8,886,595 System and method for performing an image level snapshot and for restoring partial volume data 0 2013
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (66)
6,526,492 Method of allowing a volume manager to release and regain reserve 5 1998
6,330,585 Transfer information using optical fiber connections 7 1998
6,185,631 Program for transferring execution of certain channel functions to a control unit and having means for combining certain commands and data packets in one sequence 9 1998
6,473,782 Method and apparatus for transfer information using optical fiber connections 3 1999
6,338,083 Method and apparatus for transfer of information using optical fiber connections 7 1999
6,609,165 Method and apparatus for using fibre channel extended link service commands in a point-to-point configuration 38 1999
6,499,066 Method and apparatus for using fibre channel test extended link service commands for interprocess communication 5 1999
7,404,005 Method, system, and program for selecting one of multiple paths to communicate with a device 4 2000
6,732,193 Method, system, and program for determining a number of write operations to execute 6 2000
6,526,419 Method, system, and program for remote copy in an open systems environment 35 2000
6,954,752 Methods and apparatus for clustering and prefetching data objects 9 2001
6,829,659 Method, system and program product for logically disconnecting in fibre channel communication without closing the exchange 6 2001
7,082,445 Fast data copy using a data copy track table 0 2002
7,376,862 Multiple sourcing storage devices for ultra reliable mirrored storage subsystems 6 2004
8,307,109 Methods and systems for real time integration services 1 2004
7,398,354 Achieving data consistency with point-in-time copy operations in a parallel I/O environment 2 2005
7,877,628 Mirroring data between primary and secondary sites 1 2006
8,478,915 Determining extended capability of a channel path 0 2008
8,312,189 Processing of data to monitor input/output operations 0 2008
8,214,562 Processing of data to perform system changes in an input/output processing system 2008
8,196,149 Processing of data to determine compatability in an input/output processing system 1 2008
8,176,222 Early termination of an I/O operation in an I/O processing system 0 2008
8,166,206 Cancel instruction and command for determining the state of an I/O operation 0 2008
8,117,347 Providing indirect data addressing for a control block at a channel subsystem of an I/O processing system 0 2008
8,108,570 Determining the state of an I/O operation 0 2008
8,082,481 Multiple CRC insertion in an output data stream 0 2008
8,001,298 Providing extended measurement data in an I/O processing system 0 2008
7,941,570 Bi-directional data transfer within a single I/O operation 26 2008
7,937,507 Extended measurement word determination at a channel subsystem of an I/O processing system 0 2008
7,917,813 Exception condition determination at a control unit in an I/O processing system 0 2008
7,908,403 Reserved device access contention reduction 1 2008
7,904,605 Computer command and response for determining the state of an I/O operation 0 2008
7,899,944 Open exchange limiting in an I/O processing system 0 2008
7,890,668 Providing indirect data addressing in an input/output processing system where the indirect data address list is non-contiguous 0 2008
7,840,717 Processing a variable length device command word at a control unit in an I/O processing system 35 2008
7,840,718 Processing of data to suspend operations in an input/output processing log-out system 35 2008
7,886,184 Multiple sourcing storage devices for ultra reliable mirrored storage subsystems 0 2008
8,037,171 System and program for selecting one of multiple paths to communicate with a device 2 2008
7,930,477 Achieving data consistency with point-in-time copy operations in a parallel I/O environment 2 2008
7,856,511 Processing of data to suspend operations in an input/output processing system 34 2008
8,055,807 Transport control channel program chain linking including determining sequence order 0 2008
7,937,504 Transport control channel program message pairing 2 2008
7,904,606 Transport control channel program chain linked branching 0 2008
7,984,198 System and program products for facilitating access to status and measurement data associated with input/output processing 0 2009
7,840,719 System and program products for facilitating input/output processing by using transport control words to reduce input/output communications 30 2009
8,332,542 Communication with input/output system devices 0 2009
8,140,713 System and program products for facilitating input/output processing by using transport control words to reduce input/output communications 0 2010
8,392,619 Providing indirect data addressing in an input/output processing system where the indirect data address list is non-contiguous 0 2011
8,495,253 Bi-directional data transfer within a single I/O operation 2 2011
8,738,811 Fibre channel input/output data routing system and method 0 2011
8,677,027 Fibre channel input/output data routing system and method 0 2011
8,583,988 Fibre channel input/output data routing system and method 0 2011
8,364,853 Fibre channel input/output data routing system and method 0 2011
8,364,854 Fibre channel input/output data routing system and method 0 2011
8,549,185 Facilitating transport mode input/output operations between a channel subsystem and input/output devices 0 2011
8,473,641 Facilitating transport mode input/output operations between a channel subsystem and input/output devices 0 2011
8,346,978 Facilitating transport mode input/output operations between a channel subsystem and input/output devices 0 2011
8,312,176 Facilitating transport mode input/output operations between a channel subsystem and input/output devices 0 2011
8,516,161 Providing indirect data addressing for a control block at a channel subsystem of an I/O processing system 0 2012
8,769,253 Fibre channel input/output data routing system and method 0 2012
8,417,973 Using a control policy to implement power saving features 1 2012
8,683,083 Fibre channel input/output data routing system and method 0 2012
8,583,989 Fibre channel input/output data routing system and method 0 2012
8,683,084 Fibre channel input/output data routing system and method 0 2012
8,631,175 Facilitating transport mode input/output operations between a channel subsystem and input/output devices 0 2013
8,838,860 Determining extended capability of a channel path 0 2013
 
HITACHI, LTD. (61)
6,539,461 Data saving method and external storage device 15 1999
6,041,391 Storage device and method for data sharing 13 1999
6,275,910 Storage device and method for data sharing 5 1999
6,976,103 Data migration method using storage area network 44 2000
6,647,476 Subsystem replacement method 56 2000
7,058,692 Computer, computer system, and data transfer method 1 2001
7,188,149 Storage operating data control system 0 2001
6,470,432 External storage control device and data transfer method between external storage control devices 9 2001
7,082,506 Remote copy control method, storage sub-system with the method, and large area data storage system using them 27 2002
6,816,951 Remote mirroring with write ordering sequence generators 29 2002
6,772,306 Data saving method and external storage device 19 2003
6,748,500 Storage device and method for data sharing 0 2003
6,950,917 Subsystem replacement method 9 2003
7,076,620 Data processing system including storage systems 36 2003
RE43600 External storage control device and data transfer method between external storage control devices 0 2003
7,152,079 Data replication among storage systems 6 2003
7,143,252 Storage apparatus system and method of data backup 1 2003
7,194,590 Three data center adaptive remote copy 4 2003
7,114,049 Adaptive remote copy in a heterogeneous environment 1 2003
7,219,201 Remote storage disk control device and method for controlling the same 16 2003
7,216,209 Data processing system having a plurality of storage systems 2 2004
7,130,975 Data processing system 36 2004
7,117,314 Storage device and method for data sharing 1 2004
7,093,068 Storage control system and method that reduces consumption of logical device storage capacity 12 2004
7,020,756 Data saving method and external storage device 1 2004
7,246,214 Remote copy for a storage controller with reduced data size 2 2004
7,213,114 Remote copy for a storage controller in a heterogeneous environment 1 2004
7,159,088 Storage system and data processing system 24 2004
7,725,445 Data replication among storage systems 3 2004
7,398,367 Storage subsystem that connects fibre channel and supports online backup 1 2004
7,200,729 Subsystem replacement method 0 2005
7,167,962 Remote copy for a storage controller with reduced data size 1 2005
7,143,254 Remote copy system 7 2006
8,037,239 Storage controller 5 2006
7,418,565 Remote e copy system and a remote copy method utilizing multiple virtualization apparatuses 4 2006
7,310,702 Storage control system and control method for the same 2 2006
7,296,126 Storage system and data processing system 0 2006
8,285,824 Storage system and data replication method that refuses one or more requests for changing the first logical configuration information until the first storage apparatus and second storage apparatus are synchronized 0 2006
7,447,855 Data processing method providing remote copy in a system having first, second, and third storage systems 3 2006
7,421,614 Data synchronization of multiple remote storage after remote copy suspension 11 2006
7,313,663 Storage system and data processing system 0 2007
8,239,344 Data replication among storage systems 2 2007
8,135,671 Data replication among storage systems 0 2007
7,673,107 Storage system and storage control device 0 2007
7,529,901 Storage system and data processing system 1 2007
7,555,601 Storage control system including virtualization and control method for same 8 2007
7,904,646 Storage subsystem that connects fibre channel and supports online backup 1 2008
7,617,334 Data processing system, data processing method and program 0 2008
7,882,277 Processor, data transfer unit, multicore processor system 0 2008
7,757,114 Data synchronization of multiple remote storage after remote copy suspension 1 2008
8,074,036 Data processing system having first, second and third storage systems that are arranged to be changeable between a first status and a second status in response to a predetermined condition at the first storage system 0 2008
8,595,431 Storage control system including virtualization and control method for same 0 2009
8,082,394 Computer system, storage system and method for extending volume capacity 1 2009
8,234,471 Remote copy method and remote copy system 0 2009
8,234,449 Storage subsystem that connects fibre channel and supports online backup 0 2011
8,131,956 Virtual storage system and method for allocating storage areas and releasing storage areas from allocation based on certain commands 2 2011
8,352,678 Storage controller 0 2011
8,495,319 Data processing system providing remote copy in a system having first, second and third storage systems and establishing first, second and third copy pairs 0 2011
8,806,119 Storage subsystem that connects fibre channel and supports online backup 0 2012
8,566,284 Data replication among storage systems 0 2012
8,838,917 Storage control system and control method for the same 0 2013
 
EMC CORPORATION (60)
6,044,444 Remote data mirroring having preselection of automatic recovery or intervention required when a disruption is detected 242 1997
6,182,166 Method/apparatus for interfacing two remotely disposed devices coupled via transmission medium with first and second commands transmitted without first checking receiving device for readiness 9 1997
6,088,814 Method and apparatus for reading a non-configured disc drive in an AS/400 system 13 1997
6,324,654 Computer network remote data mirroring system 226 1998
6,247,046 Method and apparatus for interfacing two remotely disposed devices coupled via a transmission medium 13 1998
6,438,595 Load balancing using directory services in a data processing system 110 1998
6,195,703 Dynamic routing for performance partitioning in a data processing network 96 1998
6,421,711 Virtual ports for data transferring of a data storage system 583 1998
6,260,120 Storage mapping and partitioning among multiple host processors in the presence of login state changes and host controller replacement 223 1998
6,151,665 Method and apparatus for mirroring blocks of information in a disc drive storage system 23 1999
6,493,796 Method and apparatus for maintaining consistency of data stored in a group of mirroring devices 22 1999
6,938,039 Concurrent file across at a target file server during migration of file systems between file servers using a network file system access protocol 95 2000
6,823,336 Data storage system and method for uninterrupted read-only access to a consistent dataset by one host processor concurrent with read-write access by another host processor 90 2000
6,442,706 Resource allocation throttle for remote data mirroring system 120 2000
6,502,205 Asynchronous remote data mirroring system 219 2000
6,574,667 Dynamic routing for performance partitioning in a data processing network 59 2001
6,799,255 Storage mapping and partitioning among multiple host processors 136 2001
7,082,100 Storage system adapter and method of using same 5 2001
6,718,352 Methods and apparatus for managing a data set stored on a data storage device 30 2001
7,149,787 Apparatus and method for mirroring and restoring data 20 2001
6,968,369 Remote data facility over an IP network 3 2001
6,988,130 Virtual ports for partitioning of data storage 61 2002
7,546,364 Replication of remote copy data for internet protocol (IP) transmission 36 2002
7,073,090 Remote data mirroring system having a remote link adapter 33 2002
6,647,474 Remote data mirroring system using local and remote write pending indicators 126 2002
6,625,705 Remote data mirroring system having a service processor 35 2002
7,024,528 Storage automated replication processing 29 2002
6,618,818 Resource allocation throttling in remote data mirroring system 50 2002
6,889,288 Reducing data copy operations for writing data from a network to storage of a cached data storage system by organizing cache blocks as linked lists of data fragments 1 2002
7,055,059 Remote data mirroring 34 2002
6,898,685 Ordering data writes from a local storage device to a remote storage device 50 2003
7,567,991 Replication of snapshot using a file system copy differential 28 2003
7,275,177 Data recovery with internet protocol replication with or without full resync 61 2003
7,380,082 Reading virtual ordered writes at local storage device 2 2003
7,051,176 Reading data provided to a remote storage device 15 2003
7,103,797 Resource allocation throttling in remote data mirroring system 15 2003
7,051,182 Mapping of hosts to logical storage units and data storage ports in a data processing system 87 2003
7,228,456 Data recovery for virtual ordered writes for multiple storage devices 34 2003
8,544,096 On-access and on-demand distributed virus scanning 1 2003
7,639,713 Database block network attached storage packet joining 0 2004
7,383,463 Internet protocol based disaster recovery of a server 54 2004
7,228,396 Switching between virtual ordered writes mode and synchronous or semi-synchronous RDF transfer mode 0 2004
7,783,798 System and method for managing use of available bandwidth for a link used for movement of data being copied in a data storage environment 2 2004
7,000,086 Virtual ordered writes 12 2005
7,430,589 Remote data facility over an IP network 0 2005
7,765,187 Replication of a consistency group of data storage objects from servers in a data network 18 2005
7,634,617 Methods, systems, and computer program products for optimized copying of logical units (LUNs) in a redundant array of inexpensive disks (RAID) environment using buffers that are larger than LUN delta map chunks 0 2006
7,634,618 Methods, systems, and computer program products for optimized copying of logical units (LUNs) in a redundant array of inexpensive disks (RAID) environment using buffers that are smaller than LUN delta map chunks 0 2006
8,170,985 Primary stub file retention and secondary retention coordination in a hierarchical storage system 2 2006
7,444,420 Apparatus and method for mirroring and restoring data 3 2006
7,945,726 Pre-allocation and hierarchical mapping of data blocks distributed from a first processor to a second processor for use in a file system 9 2006
7,676,514 Distributed maintenance of snapshot copies by a primary processor managing metadata and a secondary processor providing read-write access to a production dataset 25 2006
7,653,832 Storage array virtualization using a storage block mapping protocol client and server 15 2006
7,546,432 Pass-through write policies of files in distributed storage management 4 2006
8,706,833 Data storage server having common replication architecture for multiple storage object types 0 2006
7,769,722 Replication and restoration of multiple data storage object types in a data network 27 2006
8,352,435 Continuous data reduction for highly available synchronous mirrors 0 2011
8,805,786 Replicating selected snapshots from one storage array to another, with minimal data transmission 0 2011
8,745,004 Reverting an old snapshot on a production volume without a full sweep 0 2011
8,521,691 Seamless migration between replication technologies 0 2011
 
GOOGLE INC. (11)
6,745,303 Data synchronization of multiple remote storage 65 2002
7,127,568 Throttling in storage systems 9 2003
6,996,688 Method, system, and program for improved throughput in remote mirroring systems 2 2003
7,210,011 Information processing system, storage system, storage device controller and program that enable facilitating the recovery work of remote copying 2 2003
7,171,517 Storage apparatus 2 2004
7,139,782 Method of and system for testing remote storage 29 2004
7,581,063 Method, system, and program for improved throughput in remote mirroring systems 2 2005
7,328,373 Data processing system 24 2006
7,600,089 Storage apparatus for asynchronous remote copying 1 2006
7,698,521 Data synchronization of multiple remote storage 0 2007
7,802,137 Journaling system switching to another logical volume to store subsequently received update history 3 2007
 
COMM VAULT SYSTEMS, INC. (7)
7,209,972 High speed data transfer mechanism 80 2000
7,734,578 System and method for performing integrated storage operations 18 2004
7,861,050 Systems and methods for combining data streams in a storage operation 9 2007
7,831,766 Systems and methods of data storage management, such as pre-allocation of storage space 0 2007
8,078,583 Systems and methods for performing storage operations using network attached storage 11 2009
7,890,718 System and method for performing time-flexible calendric storage operations 5 2009
8,176,268 Systems and methods for performing storage operations in a computer network 8 2010
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (7)
7,386,610 Internet protocol data mirroring 22 2000
6,977,927 Method and system of allocating storage resources in a storage area network 47 2000
6,804,819 Method, system, and computer program product for a data propagation platform and applications of same 12 2000
6,606,690 System and method for accessing a storage area network as network attached storage 298 2001
7,149,919 Disaster recovery system with cascaded resynchronization 17 2003
7,103,826 Memory system and controller for same 6 2003
8,850,073 Data mirroring using batch boundaries 0 2007
 
MICRON TECHNOLOGY, INC. (5)
8,078,848 Memory controller having front end and back end channels for modifying commands 0 2009
8,055,816 Memory controllers, memory systems, solid state drives and methods for processing a number of commands 2 2009
8,260,973 Memory controllers, memory systems, solid state drives and methods for processing a number of commands 0 2011
8,396,995 Memory controllers, memory systems, solid state drives and methods for processing a number of commands 1 2012
8,751,700 Memory controllers, memory systems, solid state drives and methods for processing a number of commands 0 2013
 
INTEL CORPORATION (4)
7,007,142 Network data storage-related operations 19 2002
8,214,902 Determination by circuitry of presence of authorized and/or malicious data 1 2009
8,307,175 Data recovery and overwrite independent of operating system 0 2009
8,856,534 Method and apparatus for secure scan of data storage device from remote server 0 2010
 
CISCO TECHNOLOGY, INC. (2)
7,260,601 Methods and apparatus for transmitting media programs 13 2002
7,222,185 Methods and apparatus for distributing content within a content delivery system 15 2002
 
INTELLECTUAL VENTURES II LLC (2)
7,203,732 Flexible remote data mirroring 43 2001
7,941,501 Flexible remote data mirroring 10 2007
 
INTELLECTUAL VENTURES II LLC (2)
8,856,202 Flexible remote data mirroring 0 2009
8,762,328 Flexible remote data mirroring 0 2009
 
ORACLE INTERNATIONAL CORPORATION (2)
7,143,122 Data replication in data storage systems 9 2003
7,685,176 Systems and methods of asynchronous data replication 1 2006
 
SONY UNITED KINGDOM LIMITED (2)
6,115,784 Data storage apparatus and method allocating sets of data 7 1999
6,317,807 Data storage apparatus and method allocating sets of data 2 2000
 
YAHOO! INC. (2)
7,334,001 Method and system for data collection for alert delivery 7 2004
7,765,228 Method and system for data collection for alert delivery 0 2007
 
BROCADE COMMUNICATIONS SYSTEMS, INC. (1)
7,433,299 Fault-tolerant updates to a distributed fibre channel database 0 2002
 
CA, INC. (1)
6,178,427 Method of mirroring log datasets using both log file data and live log data including gaps between the two data logs 53 1998
 
CALIFORNIA MICRO DEVICES CORPORATION (1)
7,711,700 Systems and methods for classifying and transferring information in a storage network 18 2006
 
Chung, Keicy K. (1)
7,444,393 Read-only storage device having network interface, a system including the device, and a method of distributing files over a network 20 2001
 
HGST NETHERLANDS B.V. (1)
6,591,334 Method and apparatus for reducing space allocation failures in storage management systems 13 2000
 
HTC CORPORATION (1)
7,366,857 Internal disk array mirror architecture 1 2004
 
KOM NETWORKS INC. (1)
8,234,477 Method and system for providing restricted access to a storage medium 2 2009
 
NETWORK DISK, INC. (1)
8,225,002 Data storage and data sharing in a network of heterogeneous computers 1 2003
 
NOKIA SIEMENS NETWORKS GMBH & CO. KG (1)
7,171,395 Method for operating a secondary computer, switching devices for flawless operation and corresponding programme 1 2000
 
SANBOLIC, INC. (1)
7,765,378 Utilization of memory storage 0 2002
 
SEAGATE TECHNOLOGY LLC (1)
7,031,085 Version tracking of disk write operations 1 2002
 
SLATER TECHNOLOGY FUND, INC. (1)
7,370,163 Adaptive cache engine for storage area network including systems and methods related thereto 8 2005
 
SONY ERICSSON MOBILE COMMUNICATIONS AB (1)
8,463,994 System and method for improved media identification in a storage device 2 2012
 
SUN MICROSYSTEMS, INC. (1)
7,020,743 Atomic remote memory operations in cache mirroring storage systems 15 2003
 
TRANSPACIFIC OPTICS LLC (1)
6,141,704 Parallel port for connecting multiple devices and the method for controlling the same 10 1998
 
XYRATEX TECHNOLOGY LIMITED (1)
6,212,531 Method for implementing point-in-time copy using a snapshot function 84 1998
 
Other [Check patent profile for assignment information] (9)
6,598,129 Storage device and method for data sharing 16 2001
7,069,351 Computer storage device having network interface 5 2003
8,769,185 Computer storage device having separate read-only space and read-write space, removable media component, system management interface, and network interface 0 2008
8,145,729 Read-only storage device having network interface, a system including the device, and a method of distributing files over a network 0 2008
8,886,768 Read-only storage device having network interface, a system including the device and a method of distributing files over a network 0 2012
8,892,523 Auto summarization of content 0 2012
8,898,411 Snapshot storage and management system with indexing and user interface 0 2013
8,892,781 Bi-directional data transfer within a single I/O operation 0 2013
8,892,826 Systems and methods for performing storage operations in a computer network 0 2014