1
Assaf Natanzon, Eran Weiss: Cloud snapshots. EMC IP Holding Company, Krishnendu Gupta, Joseph J D Angelo, February 7, 2017: US09563517 (25 worldwide citation)

A computer implemented method, system, and program product for creating snapshots instructions at a replication site, the method comprising determining the differences between a first snapshot at a first time of a LUN and a second snapshot at a second time of the LUN, determining the differences bet ...


2
Assaf Natanzon, Saar Cohen, David Black, Erin Bournival: Maintaining consistent point-in-time in asynchronous replication during virtual machine relocation. EMC IP HOLDING COMPANY, Daly Crowley Mofford & Durkee, December 27, 2016: US09529885 (17 worldwide citation)

In one aspect, a method includes pausing write I/Os for a second virtual machine running at a second site, generating a snapshot of a first virtual machine running at a first site after pausing the write I/Os for the second virtual machine, generating a bookmark for the second virtual machine, resum ...


3
Assaf Natanzon, Saar Cohen, Anestis Panidis: Recovering corrupt virtual machine disks. EMC IP Holding Company, Staniford Tomita, March 7, 2017: US09588847 (17 worldwide citation)

A method and system for recovering a corrupt virtual disk is discussed. A request to recover the disk may be received. A recovery snapshot for the last point-in-time the system was stable may be synthesized. A difference may be identified between that recovery snapshot and the corrupt disk. A virtua ...


4
Assaf Natanzon, Saar Cohen: Virtual splitter. EMC IP Holding Company, Krishnendu Gupta, Joseph D Angelo, November 29, 2016: US09507845 (17 worldwide citation)

A system, program product, and computer implemented method for replicating a consistency group comprising monitoring the latency between one or more splitters of the consistency group and replication appliances in the replication cluster for the consistency group (CG); wherein each replication appli ...


5
Marik Marshak, Dan Aharoni, Adnan Sahin, Arieh Don, Alexandr Veprinsky, Assaf Natanzon: Intelligent migration of a virtual storage unit to another data storage system. EMC IP Holding Company, Krishnendu Gupta, Daniel P McLoughlin, October 25, 2016: US09477407 (17 worldwide citation)

A virtual storage unit from one data storage system may be migrated to another data storage system. Utilization impacts on system resources by one or more virtual storage units on multiple data storage systems may be quantified, for each data storage system as a whole, or for a functional component ...


6
Assaf Natanzon, Benny Assouline, Igor Borodin: Xcopy in journal based replication. EMC IP Holding Company, Krishnendu Gupta, Joseph D Angelo, January 3, 2017: US09535801 (17 worldwide citation)

A method, system, and program product for data replication, comprising reading do metadata, xcopying data from a storage medium to an undo stream, xcopying data from a do stream to the storage medium, and updating do meta data and the undo meta data.


7
Assaf Natanzon, Saar Cohen, Lev Ayzenberg, Ariel Kulik: Method and apparatus for replicating the punch command. EMC IP Holding Company, Krishnendu Gupta, Robert Kevin Perkins, Andre Gibbs, March 7, 2017: US09588703 (16 worldwide citation)

The punch command may be replicated in a replication environment including a production site and a replication site. The solution includes implementing a punch command to free storage received at a replication site in a replication environment by applying the punch command to storage at the replicat ...


8
Gabriel BenHanokh, Assaf Natanzon, Arieh Don, Eitan Ben Amos, Erez Sde Or: Techniques for data relocation based on access patterns. EMC IP Holding Company, Muirhead and Saturnelli, January 17, 2017: US09547459 (16 worldwide citation)

Described are techniques for storing data. A data access pattern is identified for accessing a first set of data portions of a first logical device, wherein the data access pattern includes a time-ordered list of consecutively accessed logical addresses of the first logical device. The first set of ...


9
Alexandr Veprinsky, Assaf Natanzon, Saar Cohen, Arieh Don: Leverage fast VP extent-level statistics within CDP environments. EMC IP HOLDING COMPANY, Anderson Gorecki, December 20, 2016: US09524218 (16 worldwide citation)

A replica site is restored to a selected point in time by determining data state at the selected point in time, writing data indicative of that data state to the replica site storage array, and moving extents of the data written to the replica site storage array to selected tiers in order to achieve ...


10
Assaf Natanzon, Kadir Ozdemir, Anestis Panidis: Concurrent data recovery and input/output processing. EMC IP Holding Company, Staniford Tomita, January 3, 2017: US09535800 (16 worldwide citation)

A method, article of manufacture, and apparatus for restoring LUs from a backup is discussed. In an embodiment, a primary storage system may continue to process IOs while the LU is being restored.