公开(公告)号：US11722563B2

公开(公告)日：2023-08-08

申请号：US17668664

申请日：2022-02-10

Applicant: EMC IP Holding Company LLC

Inventor： Assaf Natanzon ,  Kfir Wolfson ,  Jehuda Shemer

IPC: H04L67/1095 ,  H04L67/1097 ,  H04L9/06 ,  G06F11/16 ,  H04W12/30 ,  H04L9/00

CPC classification number: H04L67/1095 ,  G06F11/1658 ,  H04L9/0637 ,  H04L67/1097 ,  H04W12/30 ,  H04L9/50

Abstract: A replication system for data of mobile devices is disclosed. The data of a mobile device is uploaded to stations in an area. Metadata associated with the objects is stored in a centralized or decentralized system. The metadata can be accessed to identify the stations storing the device's objects and the data of the mobile device can then be retrieved from the stations and reconstructed.

公开(公告)号：US11709800B2

公开(公告)日：2023-07-25

申请号：US17449714

申请日：2021-10-01

Applicant: EMC IP Holding Company LLC

Inventor： Jehuda Shemer ,  Maxim Drobachevsky ,  Zion Drori

IPC: G06F16/174 ,  G06F11/14 ,  G06F11/30 ,  G06F16/14

CPC classification number: G06F16/1752 ,  G06F11/1453 ,  G06F11/3037 ,  G06F16/152

Abstract: One example method includes optimizing client-side deduplication. When backing up a client, an overwrite ratio is determined based on a size of actual changes made to a volume and a size indicated by changes in a change log. Client-side deduplication is enabled or disabled based on a value of the overwrite ratio.

公开(公告)号：US11704295B2

公开(公告)日：2023-07-18

申请号：US16830706

申请日：2020-03-26

Applicant: EMC IP Holding Company LLC

Inventor： Alex Solan ,  Jehuda Shemer

IPC: G06F16/22 ,  G06F16/27 ,  G06F16/23 ,  G06F16/16 ,  G06F16/13 ,  G06F16/182

CPC classification number: G06F16/2246 ,  G06F16/137 ,  G06F16/164 ,  G06F16/182 ,  G06F16/2282 ,  G06F16/2358 ,  G06F16/27

Abstract: One example method includes creating a source FS Merkle tree having a structure that matches a topology of a source FS, and a target FS Merkle tree having a structure that matches a topology of a target FS, receiving a change to the source FS, implementing the change in the source FS, updating the source FS Merkle tree to reflect the change, replicating the change to the target FS so that, with respect to the change, the target FS is synchronized with the source FS, updating the target FS Merkle tree to reflect the change to the target FS, and comparing the source FS Merkle tree to the target FS Merkle tree.

公开(公告)号：US11675669B2

公开(公告)日：2023-06-13

申请号：US17517062

申请日：2021-11-02

Applicant: EMC IP HOLDING COMPANY LLC

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

IPC: G06F12/16 ,  G06F11/14

CPC classification number: G06F11/1458 ,  G06F11/1448 ,  G06F2201/84

Abstract: Generating any point in time backups without native snapshot generation. Production data is split such that a journal stream is sent to a data protection system, which may be local or remote. The journal stream includes a data stream and a metadata stream. Backups are synthesized at the data protection system by rolling at least a portion of the journal. A backup for any point in time represented in the journal can be synthesized.

公开(公告)号：US11675612B2

公开(公告)日：2023-06-13

申请号：US16803626

申请日：2020-02-27

Applicant: EMC IP Holding Company LLC

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

IPC: G06F9/455 ,  G11C7/10 ,  G06F11/14 ,  G06F12/02

CPC classification number: G06F9/45558 ,  G06F11/1464 ,  G06F11/1471 ,  G06F12/0238 ,  G11C7/10 ,  G06F2009/4557 ,  G06F2009/45575 ,  G06F2009/45579

Abstract: One example method includes intercepting an IO issued by an application of a VM, the IO including IO data and IO metadata, storing the IO data in an IO buffer, writing the IO metadata and a pointer, but not the IO data, to a splitter journal in memory, wherein the pointer points to the IO data in the IO buffer, forwarding the IO to storage, and asynchronous with operations occurring along an IO path between the application and storage, evacuating the splitter journal by sending the IO data and the IO metadata from the splitter journal to a replication site.

公开(公告)号：US11669407B2

公开(公告)日：2023-06-06

申请号：US17449717

申请日：2021-10-01

Applicant: EMC IP Holding Company LLC

Inventor： Jehuda Shemer ,  Maxim Drobachevsky ,  Zion Drori

IPC: G06F16/00 ,  G06F11/14 ,  G06F16/174

CPC classification number: G06F11/1453 ,  G06F16/1748

Abstract: One example method includes optimizing client-side deduplication. When backing up a client, a cadence and a change log resolution are determined. These values are evaluated alone or in combination with respect to various thresholds. Client-side deduplication is enabled or disabled based on whether any one or more of the thresholds are satisfied.

公开(公告)号：US20230131627A1

公开(公告)日：2023-04-27

申请号：US17452411

申请日：2021-10-27

Applicant: EMC IP Holding Company LLC

Inventor： Jehuda Shemer ,  Ravi Vijayakumar Chitloor

IPC: G06F3/06 ,  G06F11/14

Abstract: One example method includes performing delta operations to protect data. During a delta operation, a primary map and a secondary map are processed using bit logic. The bit logic determines how to handle data stored at a location on the volume associated with an entry in the primary map and included in the current delta operation when a new write for the same location is received as the corresponding entry in the primary map is processed.

公开(公告)号：US20230128370A1

公开(公告)日：2023-04-27

申请号：US17507661

申请日：2021-10-21

Applicant: EMC IP Holding Company LLC

Inventor： Jehuda Shemer ,  Valerie Lotosh ,  Erez Sharvit

IPC: G06F11/20 ,  G06F11/14 ,  G06F9/455

Abstract: A system can maintain a first data center that comprises a virtualized overlay network and virtualized volume identifiers. The system can determine to perform a restore of data of the first data center to a second data center, the data comprising first instances of virtualized workloads. The system can transfer the data to the second data center. The system can configure the second data center with the virtualized overlay network and the virtualized volume identifiers. The system can operate the virtualized workloads on the second data center, the second instances of the virtualized workloads invoking the second instance of the virtualized overlay network and the second instance of the virtualized volume identifiers.

公开(公告)号：US11620056B2

公开(公告)日：2023-04-04

申请号：US16457428

申请日：2019-06-28

Applicant: EMC IP Holding Company LLC

Inventor： Kfir Wolfson ,  Jehuda Shemer ,  Itay Azaria ,  Lev Ayzenberg

IPC: G06F3/06 ,  G06F16/907 ,  G06F16/901 ,  G06F16/18 ,  G06F16/11

Abstract: Systems and methods for providing any point in time functionality. With a storage system such as a VSAN, any point in time protection is achieved by combining a metadata stream with snapshots of the storage system. This allows snapshots to be generated in hindsight such that any point in time functionality is provided.

公开(公告)号：US20230080605A1

公开(公告)日：2023-03-16

申请号：US18047921

申请日：2022-10-19

Applicant: EMC IP Holding Company LLC

Inventor： Alex Solan ,  Jehuda Shemer

IPC: G06F16/22 ,  G06F16/27 ,  G06F16/23 ,  G06F16/16 ,  G06F16/13 ,  G06F16/182

Abstract: One example method includes creating a source FS Merkle tree having a structure that matches a topology of a source FS, and a target FS Merkle tree having a structure that matches a topology of a target FS, receiving a change to the source FS, implementing the change in the source FS, updating the source FS Merkle tree to reflect the change, replicating the change to the target FS so that, with respect to the change, the target FS is synchronized with the source FS, updating the target FS Merkle tree to reflect the change to the target FS, and comparing the source FS Merkle tree to the target FS Merkle tree.