Inventor
OFEK YUVAL
US68 patents
Patents
50 patentsUS7240238B2Jul 3, 2007
Remote data mirroring
EMC CORP68 citations99
US7055059B2May 30, 2006
Remote data mirroring
EMC CORP110 citations99
US6598134B2Jul 22, 2003
System and method for on-line, real time, data migration
EMC CORP214 citations99
US6581143B2Jun 17, 2003
Data processing method and apparatus for enabling independent access to replicated data
EMC CORP404 citations99
US6502205B1Dec 31, 2002
Asynchronous remote data mirroring system
EMC CORP603 citations99
US6356977B2Mar 12, 2002
System and method for on-line, real time, data migration
EMC CORP186 citations99
US6240486B1May 29, 2001
System and method for on-line, real time, data migration
EMC CORP175 citations99
US6209002B1Mar 27, 2001
Method and apparatus for cascading data through redundant data storage units
EMC CORP322 citations99
US6108748AAug 22, 2000
System and method for on-line, real time, data migration
EMC CORP386 citations99
US6101497AAug 8, 2000
Method and apparatus for independent and simultaneous access to a common data set
EMC CORP421 citations99
US6092066AJul 18, 2000
Method and apparatus for independent operation of a remote data facility
EMC CORP209 citations99
US6052797AApr 18, 2000
Remotely mirrored data storage system with a count indicative of data consistency
EMC CORP416 citations99
US6044444AMar 28, 2000
Remote data mirroring having preselection of automatic recovery or intervention required when a disruption is detected
EMC CORP453 citations99
US5987566ANov 16, 1999
Redundant storage with mirroring by logical volume with diverse reading process
EMC CORP147 citations99
US5933653AAug 3, 1999
Method and apparatus for mirroring data in a remote data storage system
EMC CORP226 citations99
US5901327AMay 4, 1999
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 CORP1,543 citations99
US5896548AApr 20, 1999
Data transferring system having foreground and background modes and upon detecting significant pattern of access in foreground mode to change background mode control parameters
EMC CORP141 citations99
US5889935AMar 30, 1999
Disaster control features for remote data mirroring
EMC CORP327 citations99
US5857208AJan 5, 1999
Method and apparatus for performing point in time backup operation in a computer system
EMC CORP479 citations99
US5819310AOct 6, 1998
Method and apparatus for reading data from mirrored logical volumes on physical disk drives
EMC CORP164 citations99
US5680640AOct 21, 1997
System for migrating data by selecting a first or second transfer means based on the status of a data element map initialized to a predetermined state
EMC CORP314 citations99
US7107395B1Sep 12, 2006
Apparatus and methods for operating a computer storage system
EMC CORP327 citations98
US6920537B2Jul 19, 2005
Apparatus and methods for copying, backing up and restoring logical objects in a computer storage system by transferring blocks out of order or in parallel
EMC CORP146 citations98
US6654752B2Nov 25, 2003
Method and apparatus for independent and simultaneous access to a common data set
EMC CORP88 citations98
US6587935B2Jul 1, 2003
Method and apparatus for mirroring data in a remote data storage system
EMC CORP105 citations98
US6557079B1Apr 29, 2003
Remote data facility prefetch
EMC CORP97 citations98
US6549921B1Apr 15, 2003
Method and apparatus for performing point in time backup operation in a computer system
EMC CORP81 citations98
US6487561B1Nov 26, 2002
Apparatus and methods for copying, backing up, and restoring data using a backup segment size larger than the storage block size
EMC CORP1,370 citations98
US6487562B1Nov 26, 2002
Dynamically modifying system parameters in data storage system
EMC CORP98 citations98
US6397308B1May 28, 2002
Apparatus and method for differential backup and restoration of data in a computer storage system
EMC CORP441 citations98
US6385706B1May 7, 2002
Apparatus and methods for copying a logical object to a primary storage device using a map of storage locations
EMC CORP205 citations98
US6173377B1Jan 9, 2001
Remote data mirroring
EMC CORP523 citations98
US6112257AAug 29, 2000
Dynamic adjustment of mirror service policy for logical volumes in a disk drive system based on collected statistics
EMC CORP98 citations98
US5592432AJan 7, 1997
Cache management system using time stamping for replacement queue
EMC CORP101 citations98
US6711649B1Mar 23, 2004
Load balancing on disk array storage device
EMC CORP100 citations97
US6308284B1Oct 23, 2001
Method and apparatus for maintaining data coherency
EMC CORP113 citations97
US5960216ASep 28, 1999
Method and apparatus for interfacing two remotely disposed devices coupled via a transmission medium
EMC CORP55 citations97
US6728836B1Apr 27, 2004
Segmenting cache to provide varying service levels
EMC CORP47 citations96
US6493796B1Dec 10, 2002
Method and apparatus for maintaining consistency of data stored in a group of mirroring devices
EMC CORP63 citations96
US6477627B1Nov 5, 2002
Method and apparatus for mirroring data in a remote data storage system
EMC CORP63 citations96
US6457102B1Sep 24, 2002
Cache using multiple LRU's
EMC CORP67 citations96
US6442650B1Aug 27, 2002
Maximizing sequential output in a disk array storage device
EMC CORP46 citations96
US6442551B1Aug 27, 2002
Method and apparatus for independent and simultaneous access to a common data set
EMC CORP62 citations96
US6370626B1Apr 9, 2002
Method and apparatus for independent and simultaneous access to a common data set
EMC CORP62 citations96
US6237063B1May 22, 2001
Load balancing method for exchanging data in different physical disk storage devices in a disk array storage device independently of data processing system operation
EMC CORP71 citations96
US6185661B1Feb 6, 2001
Worm magnetic storage device
EMC CORP73 citations96
US5787473AJul 28, 1998
Cache management system using time stamping for replacement queue
EMC CORP57 citations96
US5751993AMay 12, 1998
Cache management system
EMC CORP86 citations96
US5706467AJan 6, 1998
Sequential cache management system utilizing the establishment of a microcache and managing the contents of such according to a threshold comparison
EMC CORP57 citations96
US6341333B1Jan 22, 2002
Method for transparent exchange of logical volumes in a disk array storage device
EMC CORP68 citations95
Showing the top 50 of 68 patents by PatentIndex Score.