公开(公告)号：US11531599B2

公开(公告)日：2022-12-20

申请号：US16910393

申请日：2020-06-24

Applicant: EMC IP Holding Company LLC

Inventor： Jehuda Shemer ,  Kfir Wolfson ,  Tomer Kushnir ,  Jawad Said

IPC: G06F11/00 ,  G06F11/14 ,  G06F9/455

Abstract: On-the-fly point-in-time recovery operations are disclosed. During a recovery operation, the PiT being restored can be changed on-the-fly or during the existing recovery operation without restarting the recovery process from the beginning. In one example, this improves recovery time operation (RTO) and prevents aspects of the recovery operation to be avoided when changing to a different PiT.

公开(公告)号：US11509458B2

公开(公告)日：2022-11-22

申请号：US16931582

申请日：2020-07-17

Applicant: EMC IP Holding Company LLC

Inventor： Jehuda Shemer ,  Assaf Natanzon

IPC: H04L29/00 ,  H04L9/08 ,  H04L9/14 ,  H04L9/30 ,  G06F16/27

Abstract: A method and system for securely replicating encrypted deduplicated storages. Specifically, the method and system disclosed herein entail the replication and migration of encrypted data between storage systems that support deduplication. More specifically, a first encrypted data, which may have been encrypted using a first public cryptographic key and consolidated on a source storage system, may be translated into an interim (yet still encrypted) state using a first split private cryptographic key. Thereafter, using a compound conversion key, the interim state data may be further translated into a second encrypted data, which may be characterized as being encrypted by a second public cryptographic key. Therefore, substantively, the method and system disclosed herein may be directed to the translation of encrypted data from one encryption scheme to another while in-flight from a source storage system to a target storage system.

公开(公告)号：US20220342766A1

公开(公告)日：2022-10-27

申请号：US17236757

申请日：2021-04-21

Applicant: EMC IP Holding Company LLC

Inventor： Georges Brun-Cottan ,  Jehuda Shemer ,  Arieh Don

IPC: G06F11/14 ,  G06F13/10

Abstract: Processing I/O operations may include: receiving, at a data storage system, an I/O operation from a host, wherein the I/O operation is directed to a logical address and includes an I/O tag used in connection with performing data reduction processing for first data stored at the logical address; and performing processing to back up a data set including the first data stored at the logical address. The processing may include: sending, from the data storage system to a backup application, the data set and hints regarding the first data set, wherein the hints include a first hint determined in accordance with the I/O tag from the host; performing, in accordance with the hints, data reduction processing of the data set to generate a second data set; and storing the second data set on one or more backup storage devices.

公开(公告)号：US11461362B2

公开(公告)日：2022-10-04

申请号：US16803918

申请日：2020-02-27

Applicant: EMC IP Holding Company LLC

Inventor： Alex Solan ,  Jehuda Shemer

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

Abstract: Embodiments extend using sparse Merkle trees for smart synchronization of S3 buckets by overcoming fixed size limitations through creating another Merkle tree when the fixed size limit of the first tree is exceeded, and creating yet another tree when the second tree is filled up, and so on as needed. The method maintains a super Merkle tree of trees, in which each tree can be synchronized separately by keeping a strict division to trees according to generation number. The generation is passed from a source site to a target site during replication operations. Syncing between two data sites is efficient as the super Merkle tree of the source is synced with the super Merkle tree of the target using the hashes on the nodes, as in normal Merkle tree sync operations.

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：US11379595B2

公开(公告)日：2022-07-05

申请号：US16744814

申请日：2020-01-16

Applicant: EMC IP Holding Company LLC

Inventor： Amos Zamir ,  Jehuda Shemer ,  Kfir Wolfson

IPC: G06F21/60 ,  G06F3/06 ,  H04L9/40

Abstract: Masking a data rate of transmitted data is disclosed. As data is transmitted from a production site to a secondary site, the data rate is masked. Masking the data rate can include transmitting at a fixed rate, a random rate, or an adaptive rate. Each mode of data transmission masks or obscures the actual data rate and thus prevents others from gaining information about the data or the data owner from the data transfer rate.

公开(公告)号：US20220092192A1

公开(公告)日：2022-03-24

申请号：US17025324

申请日：2020-09-18

Applicant: EMC IP Holding Company LLC

Inventor： Kfir Wolfson ,  Jehuda Shemer ,  Stav Sapir ,  Amos Zamir ,  Naor Radami

IPC: G06F21/60 ,  G06F21/62 ,  G06F9/455

Abstract: One example method includes packaging a containerized application into at least two images. The first image may include the main application and the second image includes a decryptor. Sensitive information associated with the application is encrypted and included in the second image. The decryptor operates separately from the main application. After the decryptor successfully completes, the main application is run. The main application may include a copier layer to copy any data decrypted by the decryptor into the main application.

公开(公告)号：US11283867B2

公开(公告)日：2022-03-22

申请号：US17027039

申请日：2020-09-21

Applicant: EMC IP Holding Company LLC

Inventor： Assaf Natanzon ,  Kfir Wolfson ,  Jehuda Shemer

IPC: H04L29/08 ,  H04L9/06 ,  G06F11/16 ,  H04L67/1095 ,  H04L67/1097

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：US20220066665A1

公开(公告)日：2022-03-03

申请号：US17454442

申请日：2021-11-10

Applicant: EMC IP Holding Company LLC

Inventor： Erez Sharvit ,  Jehuda Shemer ,  Valerie Lotosh

IPC: G06F3/06 ,  G06F16/23 ,  G06F9/455

Abstract: A system is provided that includes multiple different consistency groups, a respective thin journal included in each of the consistency groups, and each thin journal includes a respective thin VMDK, a thin journal space that is shared by all of the consistency groups, and the journal space includes a plurality of journal blocks, and a datastore that stores blocks allocated to the thin journals, and datastore space is dynamically allocated in journal blocks to each of the respective consistency groups.

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.