公开(公告)号：US09026696B1

公开(公告)日：2015-05-05

申请号：US14152126

申请日：2014-01-10

Applicant: EMC Corporation

Inventor： Assaf Natanzon ,  Arieh Don ,  David Meiri

IPC: G06F3/00 ,  G06F15/16 ,  G06F13/00 ,  G06F3/06 ,  G06F12/08

CPC classification number: G06F3/061 ,  G06F3/0617 ,  G06F3/0632 ,  G06F3/065 ,  G06F3/067 ,  G06F3/0671 ,  G06F11/2074 ,  G06F12/0802 ,  G06F2201/855

Abstract: Methods and apparatus for eliminating the need for a complete synchronization due to failure of a data protection appliance in a continuous data protection system having a replication splitter. In one embodiment, a continuous data protection system includes a source side having a source side storage array with a splitter and a data protection appliance, where processing includes initiating a source side splitter session, initializing a first I/O tracking mechanism for the splitter session, and activating the splitter to a source side processing active state to continuously push I/O data from the source side to the target side.

Abstract translation: 用于在具有复制分离器的连续数据保护系统中由于数据保护装置故障而消除对完全同步的需要的方法和装置。 在一个实施例中，连续数据保护系统包括源侧，源侧存储阵列具有分离器和数据保护装置，其中处理包括发起源侧分离器会话，初始化分离器会话的第一I / O跟踪机制 并且将分离器激活到源侧处理活动状态以将I / O数据从源侧连续地推送到目标侧。

公开(公告)号：US11106645B1

公开(公告)日：2021-08-31

申请号：US14868884

申请日：2015-09-29

Applicant: EMC Corporation

Inventor： Jehuda Shemer ,  Assaf Natanzon

IPC: G06F7/00 ,  G06F17/00 ,  G06F16/22 ,  G06F16/27 ,  G06F16/955

Abstract: A System, Computer Program Product, and Computer-executable method for managing an object based storage within a cloud storage provider, the System, Computer Program Product, and Computer-executable method including receiving a data I/O, determining whether the data I/O relates to an existing object within the object based storage, if the data I/O relates to an existing object, updating a stream and existing data object in the object based storage, and creating a new data object and key based on the data I/O and updating the object based storage.

公开(公告)号：US11023488B1

公开(公告)日：2021-06-01

申请号：US14576939

申请日：2014-12-19

Applicant: EMC Corporation

Inventor： Jean-Pierre Bono ,  Himabindu Tummala ,  William C. Davenport ,  Assaf Natanzon

IPC: G06F17/00 ,  G06F16/27 ,  H04L29/08

Abstract: A technique for replicating a data object from a source data storage system (source) to a destination data storage system (destination) preserves QoS (Quality of Service) by transmitting QoS information from the source to the destination and applying the QoS information when storing data at the destination that arrive in replication instructions sent from the source. The QoS information indicates desired storage tiering for the data object at the source. In the event of a failure at the source, which results in failover from the source to the destination, the destination is able to provide users with the same quality of service as was desired at the source.

公开(公告)号：US10853181B1

公开(公告)日：2020-12-01

申请号：US14753389

申请日：2015-06-29

Applicant: EMC Corporation

Inventor： Yoval Nir ,  Saar Cohen ,  Donna Lewis ,  Bhimsen Bhanjois ,  Assaf Natanzon

IPC: G06F11/14 ,  G06F16/13

Abstract: In one aspect, a method includes determining a number of data streams to assign to a volume, assigning a fragment file for each data stream, sending fragment files to a backup storage device, synthesizing the fragment files to form an image file for the volume at the backup device, sending new fragment files with changes to the volume to the backup device and synthesizing the new fragment files with the corresponding image file to form a new image file for the volume.

公开(公告)号：US10585823B2

公开(公告)日：2020-03-10

申请号：US14501808

申请日：2014-09-30

Applicant: EMC Corporation

Inventor： Arieh Don ,  Assaf Natanzon

IPC: G06N7/02 ,  G06N7/04 ,  G06N7/06 ,  G06N7/08 ,  G06F13/18

Abstract: A method, system, and computer program product for IO leveling comprising receiving an IO, determining if there is a delay for processing IO because of pending IO, based on a positive determination there is a delay for processing IO, determining a priority for the IO, and based on the priority of IO determining whether to process the IO.

公开(公告)号：US10579282B1

公开(公告)日：2020-03-03

申请号：US15085148

申请日：2016-03-30

Applicant: EMC Corporation

Inventor： Leehod Baruch ,  Assaf Natanzon ,  Jehuda Shemer ,  Amit Lieberman ,  Ron Bigman

IPC: G06F3/06

Abstract: In one embodiment, a method includes replicating a production volume on a plurality of replica volume portions. Each replica volume portion is stored on a respective storage array with a respective journal. The replicating includes distributing data from a write command to a production volume across the replica volume portions using a coding scheme. A subset of replica volume portions, less than a total number of replica volume portions, includes data for a full replica volume of the production volume.

公开(公告)号：US10409787B1

公开(公告)日：2019-09-10

申请号：US14978378

申请日：2015-12-22

Applicant: EMC Corporation

Inventor： Ron Bigman ,  Assaf Natanzon ,  Jehuda Shemer ,  Amit Lieberman ,  Yana Vaisman ,  Oded Peer

IPC: G06F17/30 ,  G06F7/00 ,  G06F16/21 ,  G06F17/27 ,  G06F16/22

Abstract: In one aspect, a method includes migrating a database object from a source database to a target database, updating a storage of the location of the DB object to be the target database, directly accessing one of the target database and the source database during the migrating and executing, during the migrating, a database command by retrieving the DB object from the other one of the target database and the source database.

公开(公告)号：US10152267B1

公开(公告)日：2018-12-11

申请号：US15085135

申请日：2016-03-30

Applicant: EMC Corporation

Inventor： Lev Ayzenberg ,  Ran Goldschmidt ,  Assaf Natanzon

IPC: G06F12/00 ,  G06F3/06 ,  G06F12/0893

Abstract: In one embodiment, a method includes intercepting a write command to write to a volume at a production site, saving data from the write command to a cache, sending metadata from the write command to a data protection appliance (DPA), writing the data to the volume, receiving a request for the data in the cache, sending the data from cache to a data protection appliance (DPA) at the production site and sending the data from the DPA to the replication site.

公开(公告)号：US10133874B1

公开(公告)日：2018-11-20

申请号：US14979897

申请日：2015-12-28

Applicant: EMC Corporation

Inventor： Assaf Natanzon ,  Leehod Baruch ,  Jehuda Shemer ,  Lev Ayzenberg

IPC: G06F21/62

Abstract: In one aspect, a method includes receiving, from a splitter, an I/O to be written from a virtual machine to a production virtual machine disk; sending an acknowledgement to the splitter that the I/O is received; writing data from the I/O to a first differential virtual machine disk; generating a snapshot; allocating a second differential virtual machine disk; redirecting new I/Os to the virtual machine, arriving from the splitter, to the second differential virtual machine disk and applying changes from first differential disk to a copy of data on a backup storage.

公开(公告)号：US10120925B1

公开(公告)日：2018-11-06

申请号：US14870147

申请日：2015-09-30

Applicant: EMC Corporation

Inventor： Assaf Natanzon ,  Yair Cohen

IPC: G06F17/30 ,  G06F9/455 ,  H04L29/08

Abstract: A computer implemented method for reading signatures corresponding to a portion of data on a virtual machine disk on a production site, wherein reading the signature includes mapping the virtual machine disk offset into a physical storage offset, and reading the signature from the physical storage; sending the signature of the portion of data to a replication site; obtaining a mapping from a virtual disk to a physical disk at the replica site; issuing a command to write a portion of data corresponding to the signature to a the physical storage based on the mapping of the replica of the virtual machine disk on the replication site; determining if the command was successful; and based on a determination that the command was not successful, marking the locations corresponding to the signature for synchronization in a synchronization structure.