1
Yuval Ofek: 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. EMC Corporation, Arnold White & Durkee, May 4, 1999: US05901327 (741 worldwide citation)

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 vo ...


2
Yuval Ofek, Zoran Cakeljic, Samuel Krikler, Sharon Galtzur, Michael Hirsch, Dan Arnon, Peter Kamvysselis: Apparatus and methods for copying, backing up, and restoring data using a backup segment size larger than the storage block size. EMC Corporation, Wolf Greenfield & Sacks P C, November 26, 2002: US06487561 (728 worldwide citation)

Method and apparatus for copying, transferring, backing up and restoring data are disclosed. The data can be copied, backed up or restored in segments sizes larger than the data blocks which comprise a logical object. In some embodiments, the segment can correspond to a track of a primary storage de ...


3
Moshe Yanai, Natan Vishlitzky, Bruno Alterescu, Daniel Castel, Gadi Shklarsky, Yuval Ofek: Asynchronous remote data mirroring system. EMC Corporation, Howrey Simon Arnold & White, December 31, 2002: US06502205 (300 worldwide citation)

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 vo ...


4
Yuval Ofek: Method and apparatus for performing point in time backup operation in a computer system. EMC Corporation, Pearson & Pearson, January 5, 1999: US05857208 (294 worldwide citation)

A data network with a remote data facility for providing redundant data storage and for enabling concurrent point-in-time backup operations. A local data processing system with a data facility stores a data base and processes applications. A second system, physically separated from the first system, ...


5
Moshe Yanai, Natan Vishlitzky, Bruno Alterescu, Daniel D C Castel, Gadi G Shklarsky, Yuval Ofek: Remote data mirroring. EMC Corporation, Howrey Simon Arnold & White, January 9, 2001: US06173377 (264 worldwide citation)

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 vo ...


6
Mathieu Gagne, Yuval Ofek: Data processing method and apparatus for enabling independent access to replicated data. EMC Corporation, George A Herbster, June 17, 2003: US06581143 (246 worldwide citation)

A data storage facility that allows data on a standard device to be replicated to other storage devices for independent and concurrent access. The standard device includes first and second tables for monitoring the operation of the standard device. The other storage device that receive the copies ha ...


7
Yuval Ofek, Zoran Cakeljic, Mathieu Gagne: Apparatus and method for differential backup and restoration of data in a computer storage system. EMC Corporation, Wolf Greenfield & Sacks P C, May 28, 2002: US06397308 (225 worldwide citation)

Method and apparatus for generating partial backups of logical objects in a computer storage system are disclosed. Changed data blocks are identified and stored as differential abstract block sets. The differential abstract block set may include data blocks in any order and metadata identifying the ...


8
Yuval Ofek: Remote data mirroring having preselection of automatic recovery or intervention required when a disruption is detected. EMC Corporation, Arnold White & Durkee, March 28, 2000: US06044444 (220 worldwide citation)

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 vo ...


9
Yuval Ofek: Method and apparatus for independent and simultaneous access to a common data set. EMC Corporation, George A Pearson & Pearson Herbster, August 8, 2000: US06101497 (211 worldwide citation)

A data network with data storage facilities for providing redundant data storage and for enabling concurrent access to the data for multiple purposes. A first data processing system with a first data facility stores a data base and processes transactions or other priority applications. A second data ...


10
Yuval Ofek, Moshe Yanai: System and method for on-line, real time, data migration. EMC Corporation, George A Pearson & Pearson Herbster, August 22, 2000: US06108748 (203 worldwide citation)

A system and method for providing on-line, real-time, transparent data migration from an existing storage device to a replacement storage device. The existing and replacement storage devices are connected as a composite storage device that is coupled to a host, network or other data processing syste ...