公开(公告)号：US10255137B1

公开(公告)日：2019-04-09

申请号：US14108032

申请日：2013-12-16

Applicant: EMC IP Holding Company LLC

Inventor： Anestis Panidis ,  Assaf Natanzon ,  Saar Cohen

IPC: G06F12/00 ,  G06F11/14 ,  G06F3/06

Abstract: Method and system for point-in-time recovery from a deduplicated data system is discussed. A request specifying a point-in-time may be received. A backup snapshot nearest that point-in-time may be identified, and a recovery snapshot may be synthesized.

公开(公告)号：US10235064B1

公开(公告)日：2019-03-19

申请号：US15391070

申请日：2016-12-27

Applicant: EMC IP Holding Company LLC

Inventor： Assaf Natanzon ,  Saar Cohen ,  Kirill Shoikhet

IPC: G06F3/06

Abstract: A storage system comprises a storage array in operable communication with and responsive to instructions from a host. The storage array comprises a logical unit (LU), a privileged zone, a data protection appliance (DPA), and an intermediary device. The privileged zone is configured within the storage array and permits at least one predetermined process to have access to the LU. The DPA is configured to operate within the privileged zone. The intermediary device is in operable communication with the host, LU, and DPA and is configured to receive read and write instructions from the DPA and to ensure that I/O's passing through the intermediary device to at least one of the LU and the DPA, in response to the reads and writes, are formatted to a first predetermined standard, for at least one of the LU and the DPA.

公开(公告)号：US20170235652A1

公开(公告)日：2017-08-17

申请号：US15586329

申请日：2017-05-04

Applicant: EMC IP Holding Company LLC

Inventor： Assaf Natanzon ,  Saar Cohen ,  Anestis Panidis

IPC: G06F11/14 ,  G06F11/20

CPC classification number: G06F11/1464 ,  G06F11/1451 ,  G06F11/1453 ,  G06F11/2069 ,  G06F11/2074 ,  G06F11/2076 ,  G06F2201/815 ,  G06F2201/84 ,  G06F2201/855

Abstract: Example embodiments of the present invention relate to a method, a system, and a computer program product for performing data replication and backup. The method comprises performing a first data replication of a production site storage to a replication site storage and performing a first backup of the production site storage to a production site backup storage. A second data replication then may be performed from the production site backup storage to a backup site backup storage.

公开(公告)号：US20240256402A1

公开(公告)日：2024-08-01

申请号：US18632166

申请日：2024-04-10

Applicant: EMC IP Holding Company LLC

Inventor： Nadav Azaria ,  Jehuda Shemer ,  Saar Cohen

IPC: G06F11/14 ,  G06F9/455

CPC classification number: G06F11/1469 ,  G06F9/45558 ,  G06F11/1448 ,  G06F2009/45562 ,  G06F2009/45575 ,  G06F2009/45579

Abstract: One example method includes receiving, at an IO journal, a new entry that identifies a respective disk location L, and data X written at that disk location L, and determining whether a location specified in an oldest entry of the IO journal is specified in any other entries in the IO journal. When the location specified in the oldest entry is not specified in any other entries in the IO journal, adding the new entry to the IO journal, and augmenting the new entry with undo data. Or, when the location specified in the oldest entry is specified in at least one other entry in the journal, setting data specified in the oldest entry as undo data for the next entry that identifies that location, and adding the new entry to the IO journal, and deleting the oldest entry from the IO journal.

公开(公告)号：US12039181B2

公开(公告)日：2024-07-16

申请号：US16657518

申请日：2019-10-18

Applicant: EMC IP Holding Company LLC

Inventor： Jehuda Shemer ,  Arieh Don ,  Meir Pinhasov ,  Saar Cohen

IPC: G06F3/06 ,  G06F9/455

CPC classification number: G06F3/065 ,  G06F3/0619 ,  G06F3/0664 ,  G06F3/067 ,  G06F9/45558 ,  G06F2009/45583

Abstract: Systems and methods for replicating data from storage. Snapshots are taken of the volumes in physical storage. The snapshot volumes are exposed to a virtual replication system. Using the snapshots, differential or changed data can be identified. The identified data is then replicated by the virtual replication system to a remove virtual replication system.

公开(公告)号：US11921589B2

公开(公告)日：2024-03-05

申请号：US16909613

申请日：2020-06-23

Applicant: EMC IP Holding Company LLC

Inventor： Jehuda Shemer ,  Valerie Lotosh ,  Saar Cohen ,  Erez Sharvit

IPC: G06F11/14 ,  G06F16/178 ,  G06F16/18 ,  G06F16/188

CPC classification number: G06F11/1461 ,  G06F11/1407 ,  G06F11/1451 ,  G06F11/1464 ,  G06F11/1469 ,  G06F16/178 ,  G06F16/1815 ,  G06F16/188 ,  G06F2201/80

Abstract: Any point in time backups for distributed consistency is disclosed. IOs from a consistency group are received by multiple aggregators and stored in corresponding journals. In response to a bookmark, the multiple journals are synthesized to create a do stream or to add the multiple journals to the do stream. A full synchronization operation can be performed simultaneously with replication operations.

公开(公告)号：US11809279B2

公开(公告)日：2023-11-07

申请号：US16713722

申请日：2019-12-13

Applicant: EMC IP Holding Company LLC

Inventor： Nadav Azaria ,  Saar Cohen ,  Jehuda Shemer

IPC: G06F16/27 ,  G06F16/28 ,  G06F11/14

CPC classification number: G06F11/1446 ,  G06F16/27 ,  G06F16/285 ,  G06F2201/84

Abstract: A live image of a virtual machine is disclosed. When generating a live image, an image of a virtual machine is generated. A journal is also generated that starts before a start time of the image and ends after the start time of the image. A live image is then generated by synchronizing the start time of the image with the journal. This includes evaluating or analyzing the journal relative to the backup to determine or synchronize the start time relative to the entries in the journal.

公开(公告)号：US11650890B2

公开(公告)日：2023-05-16

申请号：US16784074

申请日：2020-02-06

Applicant: EMC IP Holding Company LLC

Inventor： Jehuda Shemer ,  Nadav Azaria ,  Saar Cohen

IPC: G06F16/23 ,  G06F11/14 ,  G06F9/455

CPC classification number: G06F11/1471 ,  G06F16/2358 ,  G06F9/45558 ,  G06F2009/45562 ,  G06F2201/80 ,  G06F2201/82

Abstract: One example method includes capturing IOs, adding the IOs to a journal, adding undo data to the journal for one or more locations, and using the IOs and the undo data to determine when, during a timespan defined by the journal, a backup could have been taken. This determination may involve the use of undo data which indicates what the content of a particular location was prior to the first IO directed to that location during the timespan defined by the journal.

公开(公告)号：US11435933B2

公开(公告)日：2022-09-06

申请号：US16785288

申请日：2020-02-07

Applicant: EMC IP Holding Company LLC

Inventor： Saar Cohen ,  Jehuda Shemer ,  Valerie Lotosh ,  Erez Sharvit

IPC: G06F3/06 ,  G06F11/14

Abstract: Retroactive backup compliance. A data stream from a production site is stored in secondary storage associated with a data protection system. In response to an event such as a regulation change or a service level agreement change, backups are generated retroactively from the stored data stream. Backups are generated to correspond to times in the past. Backups can also be replaced, deleted, or generated ad-hoc. Further, the retroactively generated backups are generated to be consistent.

公开(公告)号：US20210365474A1

公开(公告)日：2021-11-25

申请号：US16878942

申请日：2020-05-20

Applicant: EMC IP Holding Company LLC

Inventor： Saar Cohen ,  Jehuda Shemer ,  Kfir Wolfson ,  Itay Azaria

IPC: G06F16/27 ,  G06F16/23 ,  G06F9/48

Abstract: Prioritization and quality of service control operations for any PiT replication operations. When replicating data from a production site to a replica site, the transmission of data is prioritized based on the perspective of a splitter and based on the perspective of an appliance, which may coordinate with multiple splitters. Quality is controlled by prioritizing which data is sent. The transmission may also perform compression when transmitting the data and may handle situations where available resources are scarce or unavailable.