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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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
EMC CORPORATIONHOPKINTON, MA4438

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ofek, Yuval Hopkinton, MA 71 6103

Cited Art Landscape

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Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
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8,972,615 Communication with input/output system devices 0 2012
8,631,175 Facilitating transport mode input/output operations between a channel subsystem and input/output devices 0 2013
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7,546,324 Systems and methods for performing storage operations using network attached storage 98 2004
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7,315,923 System and method for combining data streams in pipelined storage operations in a storage network 102 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 48 2004
* 2005/0246,376 System and method for stored data archive verification 49 2004
* 2005/0246,510 System and method for combining data streams in pipelined storage operations in a storage network 79 2004
* 2005/0187,992 System and method for performing a snapshot and for restoring data 89 2004
7,581,077 Method and system for transferring data in a storage operation 91 2005
7,346,751 Systems and methods for generating a storage-related metric 110 2005
7,343,356 Systems and methods for storage modeling and costing 104 2005
7,343,453 Hierarchical systems and methods for providing a unified view of storage information 107 2005
7,343,459 Systems and methods for detecting & mitigating storage risks 115 2005
7,975,061 System and method for performing multistream storage operations 25 2005
7,809,914 Methods and system of pooling storage devices 68 2005
7,765,369 Method and system for selectively deleting stored data 47 2005
7,500,053 Method and system for grouping storage system components 141 2005
7,472,238 Systems and methods for recovering electronic information from a storage medium 124 2005
7,490,207 System and method for performing auxillary storage operations 150 2005
7,315,924 Logical view with granular access to exchange data managed by a modular data and storage management system 40 2005
7,620,710 System and method for performing multi-path storage operations 56 2005
7,613,748 Stored data reverification management system and method 130 2005
7,606,844 System and method for performing replication copy storage operations 90 2005
7,603,518 System and method for improved media identification in a storage device 21 2005
7,584,227 System and method for containerized data storage and tracking 42 2005
7,543,125 System and method for performing time-flexible calendric storage operations 83 2005
7,457,790 Extensible configuration engine system and method 27 2005
7,472,142 System and method for archiving objects in an information store 17 2006
7,409,509 Dynamic storage device pooling in a computer system 105 2006
8,271,548 Systems and methods for using metadata to enhance storage operations 8 2006
7,937,393 Systems and methods for classifying and transferring information in a storage network 39 2006
7,849,059 Data classification systems and methods for organizing a metabase 24 2006
7,831,795 Systems and methods for classifying and transferring information in a storage network 48 2006
7,822,749 Systems and methods for classifying and transferring information in a storage network 19 2006
7,801,864 Systems and methods for using metadata to enhance data identification operations 49 2006
7,747,579 Metabase for facilitating data classification 69 2006
7,734,593 Systems and methods for classifying and transferring information in a storage network 40 2006
7,725,671 System and method for providing redundant access to metadata over a network 20 2006
7,707,178 Systems and methods for classifying and transferring information in a storage network 21 2006
7,668,884 Systems and methods for classifying and transferring information in a storage network 68 2006
7,660,800 Systems and methods for classifying and transferring information in a storage network 19 2006
7,660,807 Systems and methods for cataloging metadata for a metabase 41 2006
7,657,550 User interfaces and methods for managing data in a metabase 69 2006
7,631,151 Systems and methods for classifying and transferring information in a storage network 20 2006
7,613,752 Systems and methods for using metadata to enhance data management operations 49 2006
7,844,676 Email attachment management in a computer system 35 2006
7,603,386 Systems and methods for managing location of media in a storage system 20 2006
8,930,496 Systems and methods of unified reconstruction in storage systems 0 2006
8,661,216 Systems and methods for migrating components in a hierarchical storage network 5 2006
8,655,850 Systems and methods for resynchronizing information 7 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 18 2006
9,009,076 Systems and methods for dynamic digital asset resource management 0 2006
8,677,091 Writing data and storage system specific metadata to network attached storage device 1 2006
7,962,709 Network redirector systems and methods for performing data replication 53 2006
7,870,355 Log based data replication system with disk swapping below a predetermined rate 50 2006
7,818,262 System and method for providing a flexible licensing system for digital content 12 2006
7,661,028 Rolling cache configuration for a data replication system 98 2006
7,651,593 Systems and methods for performing data replication 104 2006
7,636,743 Pathname translation in a data replication system 76 2006
7,617,253 Destination systems and methods for performing data replication 75 2006
7,617,262 Systems and methods for monitoring application data in a data replication system 88 2006
8,726,242 Systems and methods for continuous data replication 7 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 114 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 4 2007
7,882,077 Method and system for offline indexing of content and classifying stored data 59 2007
7,734,669 Managing copies of data 37 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 22 2007
8,112,605 System and method for allocation of organizational resources 18 2007
7,802,067 Interface systems and methods for accessing stored data 31 2007
7,484,054 System and method for performing storage operations in a computer network 99 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 10 2007
7,792,789 Method and system for collaborative searching 28 2007
7,831,566 Systems and methods of hierarchical storage management, such as global management of storage operations 21 2007
8,140,786 Systems and methods for creating copies of data, such as archive copies 52 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 173 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 38 2008
7,644,245 Systems and methods for detecting and mitigating storage risks 28 2008
8,055,625 System and method for generating and managing quick recovery volumes 8 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 5 2008
8,170,995 Method and system for offline indexing of content and classifying stored data 16 2008
8,108,427 System and method for storage operation access security 14 2008
8,037,028 System and method for storing redundant information 36 2008
7,953,706 System and method for storing redundant information 22 2008
7,937,365 Method and system for searching stored data 26 2008
7,882,098 Method and system for searching stored data 9 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 15 2008
8,510,573 System and method for encrypting secondary copies of data 1 2008
8,484,165 Systems and methods of media management, such as management of media to and from a media storage library 4 2008
8,468,538 Systems and methods of data storage management, such as dynamic data stream allocation 1 2008
8,402,000 Systems and methods of media management, such as management of media to and from a media storage library 7 2008
8,346,734 Systems and methods of media management, such as management of media to and from a media storage library 4 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 18 2008
7,865,517 Managing copies of data 19 2008
7,814,118 Managing copies of data 24 2008
7,877,351 Hierarchical systems and methods for performing data storage operations 38 2008
7,769,961 Systems and methods for sharing media in a computer network 39 2008
8,433,679 Modular systems and methods for managing data storage operations 8 2008
8,769,048 Data protection scheduling, such as providing a flexible backup window in a data protection system 1 2008
8,352,954 Data storage resource allocation by employing dynamic methods and blacklisting resource request pools 2 2008
9,098,495 Application-aware and remote single instance data management 0 2008
8,219,524 Application-aware and remote single instance data management 75 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 15 2008
8,166,263 Continuous data protection over intermittent connections, such as continuous data backup for laptops or wireless devices 42 2008
7,827,363 Systems and methods for allocating control of storage media in a network environment 19 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 21 2008
8,706,976 Parallel access virtual tape library and drives 0 2008
8,156,086 Systems and methods for stored data verification 6 2008
8,055,627 System and method for archiving objects in an information store 22 2008
8,103,670 Systems and methods for retrieving data in a computer network 12 2008
7,757,043 Hierarchical systems and methods for performing storage operations in a computer network 39 2008
7,873,802 Systems and methods for recovering electronic information from a storage medium 35 2008
7,962,714 System and method for performing auxiliary storage operations 7 2008
7,739,459 Systems and methods for performing storage operations in a computer network 37 2009
7,739,450 System and method for improved media identification in a storage device 19 2009
7,849,266 Method and system for grouping storage system components 37 2009
8,161,003 Selective data replication system and method 11 2009
8,195,623 System and method for performing a snapshot and for restoring data 28 2009
8,204,859 Systems and methods for managing replicated database data 35 2009
7,949,512 Systems and methods for performing virtual storage operations 18 2009
7,840,533 System and method for performing an image level snapshot and for restoring partial volume data 43 2009
7,890,719 System and method for performing time-flexible calendric storage operations 10 2009
8,930,306 Synchronized data deduplication 4 2009
7,877,362 System and method for containerized data storage and tracking 20 2009
7,873,806 Snapshot storage and management system with indexing and user interface 25 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 10 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 19 2009
8,959,299 Using a snapshot as a data source 0 2009
9,015,181 Systems and methods for managing single instancing data 0 2009
7,844,573 Systems and methods for managing location of media in a storage system 1 2009
8,024,294 Systems and methods for performing replication copy storage operations 34 2009
8,121,983 Systems and methods for monitoring application data in a data replication system 36 2009
8,346,825 Stored data reverification management system and method 1 2009
8,131,680 Systems and methods for using metadata to enhance data management operations 11 2009
8,296,475 Systems and methods for performing multi-path storage operations 2 2009
8,412,677 Systems and methods for byte-level or quasi byte-level single instancing 6 2009
7,962,455 Pathname translation in a data replication system 45 2009
8,271,830 Rolling cache configuration for a data replication system 35 2009
8,434,131 Managing connections in a data storage system 4 2009
8,578,120 Block-level single instancing 5 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 15 2009
8,401,996 Storing a variable number of instances of data objects 8 2009
8,285,684 Systems and methods for performing data replication 19 2010
8,051,095 Systems and methods for classifying and transferring information in a storage network 11 2010
7,831,553 Systems and methods for classifying and transferring information in a storage network 71 2010
8,352,433 Modular backup and retrieval system used in conjunction with a storage area network 9 2010
8,484,162 De-duplication systems and methods for application-specific data 9 2010
8,504,517 Systems and methods for selective data replication 16 2010
8,725,698 Stub file prioritization in a data replication system 8 2010
8,504,515 Stubbing systems and methods in a data replication environment 18 2010
8,352,422 Data restore systems and methods in a replication environment 28 2010
8,849,955 Cloud storage and networking agents, including agents for utilizing multiple, different cloud storage sites 7 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 14 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 39 2010
7,831,622 Systems and methods for classifying and transferring information in a storage network 50 2010
8,073,969 Systems and methods for facilitating storage operations using network attached storage devices 6 2010
7,979,389 System and method for performing integrated storage operations 11 2010
7,882,093 Managing copies of data 19 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 2 2010
7,987,319 System and method for improved media identification in a storage device 18 2010
* 8,103,829 Hierarchical systems and methods for performing storage operations in a computer network 11 2010
8,285,685 Metabase for facilitating data classification 5 2010
8,032,718 Systems and methods for sharing media in a computer network 13 2010
8,306,926 Systems and methods for storage modeling and costing 9 2010
8,396,838 Legal compliance, electronic discovery and electronic document handling of online and offline copies of data 6 2010
8,131,725 Systems and methods for using metadata to enhance data identification operations 11 2010
8,086,809 Interface systems and methods for accessing stored data 13 2010
8,074,042 Methods and system of pooling storage devices 14 2010
8,041,905 Systems and methods for allocating control of storage media in a network environment 13 2010
8,010,769 Systems and methods for classifying and transferring information in a storage network 13 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 23 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 13 2010
7,958,307 Method and system for grouping storage system components 15 2010
8,131,964 Systems and methods for combining data streams in a storage operation 7 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 11 2010
8,037,031 Method and system for offline indexing of content and classifying stored data 11 2010
8,442,983 Asynchronous methods of data classification using change journals and other data structures 6 2010
8,595,191 Systems and methods for performing data management operations using snapshots 2 2010
8,433,682 Systems and methods for analyzing snapshots 4 2010
8,577,851 Content aligned block-based deduplication 6 2010
8,578,109 Systems and methods for retaining and using data block signatures in data protection operations 6 2010
8,572,340 Systems and methods for retaining and using data block signatures in data protection operations 6 2010
8,364,652 Content aligned block-based deduplication 14 2010
8,140,794 Snapshot storage and management system with indexing and user interface 11 2011
9,021,198 System and method for sharing SAN storage 0 2011
8,041,673 Hierarchical systems and methods for performing data storage operations 17 2011
7,984,063 Managing copies of data 17 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 5 2011
8,099,428 Managing copies of data 6 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 1 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 8 2011
8,230,195 System and method for performing auxiliary storage operations 9 2011
8,589,347 Systems and methods for performing data replication 14 2011
8,572,038 Systems and methods for performing data replication 13 2011
8,489,656 Systems and methods for performing data replication 17 2011
8,443,142 Method and system for grouping storage system components 4 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 4 2011
8,230,171 System and method for improved media identification in a storage device 10 2011
8,285,964 Systems and methods for classifying and transferring information in a storage network 9 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 19 2011
8,935,492 Archiving data objects using secondary copies 0 2011
8,620,870 Efficient data management improvements, such as docking limited-feature data management modules to a full-featured data management system 3 2011
8,612,394 System and method for archiving objects in an information store 1 2011
8,447,728 System and method for storage operation access security 3 2011
8,442,944 System and method for generating and managing quick recovery volumes 3 2011
8,285,683 System and method for storing redundant information 7 2011
8,341,359 Systems and methods for sharing media and path management in a computer network 5 2011
8,566,278 Hierarchical systems and methods for performing data storage operations 7 2011
8,291,177 Systems and methods for allocating control of storage media in a network environment 2 2011
8,266,106 Systems and methods for performing storage operations using network attached storage 10 2011
8,402,244 Methods and system of pooling storage devices 4 2011
9,104,623 Client-side repository in a networked deduplicated storage system 0 2011
9,020,900 Distributed deduplicated storage system 0 2011
8,266,397 Interface systems and methods for accessing stored data 10 2011
8,229,954 Managing copies of data 15 2012
8,725,731 Systems and methods for retrieving data in a computer network 5 2012
8,402,219 Hierarchical systems and methods for performing storage operations in a computer network 7 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 4 2012
8,433,872 Snapshot storage and management system with indexing and user interface 4 2012
8,392,677 Systems and methods for creating copies of data, such as archive copies 6 2012
8,380,957 Continuous data protection over intermittent connections, such as continuous data backup for laptops or wireless devices 2 2012
8,364,914 Systems and methods for performing storage operations in a computer network 5 2012
8,645,320 System and method for performing an image level snapshot and for restoring partial volume data 2 2012
8,504,634 Email attachment management in a computer system 7 2012
8,892,523 Auto summarization of content 0 2012
8,666,942 Systems and methods for managing snapshots of replicated databases 7 2012
8,463,753 System and method for extended media retention 6 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 1 2012
8,725,964 Interface systems and methods for accessing stored data 5 2012
8,725,980 System and method for allocation of organizational resources 1 2012
8,577,844 Systems and methods for performing storage operations using network attached storage 7 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 3 2012
8,793,221 Systems and methods for performing data replication 6 2012
8,656,218 Memory configuration for data replication system including identification of a subsequent log entry by a destination computer 7 2012
9,020,990 Stored data reverification management system and method 0 2012
8,930,319 Modular backup and retrieval system used in conjunction with a storage area network 0 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 1 2012
8,712,969 System and method for storing redundant information 0 2012
8,706,993 Systems and methods for storage modeling and costing 1 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 4 2012
8,504,741 Systems and methods for performing multi-path storage operations 0 2012
* 2013/0019,068 SYSTEMS AND METHODS FOR SHARING MEDIA IN A COMPUTER NETWORK 1 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
8,924,428 Systems and methods of media management, such as management of media to and from a media storage library 0 2012
9,069,799 Restoration of centralized data storage manager, such as data storage manager in a hierarchical data storage system 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
9,110,602 Content aligned block-based deduplication 0 2013
8,688,931 Systems and methods for performing storage operations in a computer network 2 2013
8,612,707 Continuous data protection over intermittent connections, such as continuous data backup for laptops or wireless devices 1 2013
9,021,452 Automatic identification of storage requirements, such as for use in selling data storage management solutions 0 2013
8,909,881 Systems and methods for creating copies of data, such as archive copies 0 2013
8,799,613 Methods and system of pooling storage devices 1 2013
9,003,117 Hierarchical systems and methods for performing storage operations in a computer network 0 2013
8,950,009 Information management of data associated with multiple cloud services 0 2013
9,092,500 Utilizing snapshots for access to databases and other applications 0 2013
9,063,938 Search filtered file system using secondary storage, including multi-dimensional indexing and searching of archived files 0 2013
9,020,890 Smart archiving and data previewing for mobile 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
8,966,288 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 0 2013
8,898,411 Snapshot storage and management system with indexing and user interface 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 6 2013
9,047,296 Asynchronous methods of data classification using change journals and other data structures 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
9,098,514 Efficient data management improvements, such as docking limited-feature data management modules to a full-featured data management system 0 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
9,002,785 Stubbing systems and methods in a data replication environment 0 2013
8,868,494 Systems and methods for selective data replication 6 2013
9,021,213 System and method for sharing media in a computer network 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
9,104,340 Systems and methods for performing storage operations using network attached storage 0 2013
8,745,105 Systems and methods for performing data replication 6 2013
9,058,117 Block-level single instancing 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
9,021,282 Power management of data processing resources, such as power adaptive management of data storage operations 0 2013
8,996,823 Parallel access virtual tape library and drives 0 2013
8,886,595 System and method for performing an image level snapshot and for restoring partial volume data 0 2013
9,002,799 Systems and methods for resynchronizing information 0 2014
8,892,826 Systems and methods for performing storage operations in a computer network 0 2014
9,047,357 Systems and methods for managing replicated database data in dirty and clean shutdown states 0 2014
9,003,137 Interface systems and methods for accessing stored data 0 2014
9,111,220 Systems and methods for storage modeling and costing 0 2014
8,935,210 Systems and methods for performing replication copy storage operations 1 2014
9,003,374 Systems and methods for continuous data replication 0 2014
9,098,542 Systems and methods for using metadata to enhance data identification operations 0 2014
9,020,898 Systems and methods for performing data replication 0 2014
9,092,378 Restoring computing environments, such as autorecovery of file systems at certain points in time 0 2014
 
INTELLECTUAL VENTURES II LLC (4)
7,203,732 Flexible remote data mirroring 48 2001
7,941,501 Flexible remote data mirroring 11 2007
8,856,202 Flexible remote data mirroring 0 2009
8,762,328 Flexible remote data mirroring 0 2009
 
EMC CORPORATION (62)
6,044,444 Remote data mirroring having preselection of automatic recovery or intervention required when a disruption is detected 245 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 247 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 126 1998
* 6,195,703 Dynamic routing for performance partitioning in a data processing network 99 1998
* 6,421,711 Virtual ports for data transferring of a data storage system 636 1998
6,260,120 Storage mapping and partitioning among multiple host processors in the presence of login state changes and host controller replacement 228 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 23 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 104 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 96 2000
6,442,706 Resource allocation throttle for remote data mirroring system 132 2000
6,502,205 Asynchronous remote data mirroring system 241 2000
6,574,667 Dynamic routing for performance partitioning in a data processing network 62 2001
6,799,255 Storage mapping and partitioning among multiple host processors 142 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 32 2001
* 7,149,787 Apparatus and method for mirroring and restoring data 34 2001
6,968,369 Remote data facility over an IP network 5 2001
6,988,130 Virtual ports for partitioning of data storage 63 2002
* 7,546,364 Replication of remote copy data for internet protocol (IP) transmission 46 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 129 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 51 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
* 2004/0107,318 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 4 2002
7,055,059 Remote data mirroring 36 2002
* 6,898,685 Ordering data writes from a local storage device to a remote storage device 52 2003
7,567,991 Replication of snapshot using a file system copy differential 32 2003
7,275,177 Data recovery with internet protocol replication with or without full resync 70 2003
* 7,380,082 Reading virtual ordered writes at local storage device 5 2003
* 7,051,176 Reading data provided to a remote storage device 16 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 89 2003
* 7,228,456 Data recovery for virtual ordered writes for multiple storage devices 40 2003
8,544,096 On-access and on-demand distributed virus scanning 3 2003
7,639,713 Database block network attached storage packet joining 0 2004
7,383,463 Internet protocol based disaster recovery of a server 61 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 3 2004
* 7,000,086 Virtual ordered writes 13 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 22 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
8,914,596 Virtual ordered writes for multiple storage devices 0 2006
8,170,985 Primary stub file retention and secondary retention coordination in a hierarchical storage system 4 2006
* 7,444,420 Apparatus and method for mirroring and restoring data 4 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 13 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 31 2006
7,653,832 Storage array virtualization using a storage block mapping protocol client and server 18 2006
7,546,432 Pass-through write policies of files in distributed storage management 8 2006
8,706,833 Data storage server having common replication architecture for multiple storage object types 3 2006
7,769,722 Replication and restoration of multiple data storage object types in a data network 39 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 6 2011
* 8,745,004 Reverting an old snapshot on a production volume without a full sweep 6 2011
* 8,521,691 Seamless migration between replication technologies 7 2011
 
INTEL CORPORATION (4)
* 7,007,142 Network data storage-related operations 21 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
 
TRANSPACIFIC OPTICS LLC (1)
* 6,141,704 Parallel port for connecting multiple devices and the method for controlling the same 10 1998
 
HTC CORPORATION (1)
* 7,366,857 Internal disk array mirror architecture 1 2004
 
BROCADE COMMUNICATIONS SYSTEMS, INC. (1)
* 7,433,299 Fault-tolerant updates to a distributed fibre channel database 0 2002
 
CITRIX SYSTEMS, INC. (1)
* 7,765,378 Utilization of memory storage 2 2002
 
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
* Cited By Examiner