公开(公告)号：US20210191820A1

公开(公告)日：2021-06-24

申请号：US16886435

申请日：2020-05-28

Applicant: EMC IP Holding Company LLC

Inventor： Sunil Yadav ,  Shelesh Chopra ,  Amarendra Behera ,  Tushar Dethe ,  Jigar Premajibhai Bhanushali ,  Deependra Pratap Singh ,  Sapna Chauhan ,  Himanshu Arora ,  Anjana Rao ,  Ravi V. Chitloor

IPC: G06F11/14

Abstract: A system for providing backup services for limited-access user data includes persistent storage and a manager. The manager identifies a backup generation event for the limited-access user data based on a protection policy; in response to identifying the backup generation event, performs, using an application that gates access to the limited-access user data, a change analysis of the limited-access user data to identify a portion of the limited-access user data that is potentially in a backed-up state; obtains, using the application, metadata associated with the portion indicative of whether sub-portions of the portion are in the backed-up state; identify, using the metadata, at least one of the sub-portions that is not in the backed-up state; and generates the user data backup using the at least one of the sub-portions.

公开(公告)号：US10324747B1

公开(公告)日：2019-06-18

申请号：US15377067

申请日：2016-12-13

Applicant: EMC IP Holding Company LLC

Inventor： Anupam Chakraborty ,  Tushar Dethe ,  Subhashish Mallik

IPC: G06F9/46 ,  G06F9/455

Abstract: In one embodiment, for each of the nodes forming a cluster that share a cluster shared volume (CSV), a remote connection is established with an operating system (OS) management interface of an operating system of the node to query and to obtain OS configuration information concerning a VMM hosting one or more virtual machine (VMs) within the node. A remote connection is established with a VMM interface of the VMM of the node to query and to obtain VM information concerning each of the VMs hosted by the VMM in the node. An analysis is performed on the OS configuration information and the VM information in view of a set of management rules. A report is generated based on the analysis, the report including information indicating which of the management rules has been violated.

公开(公告)号：US20190132390A1

公开(公告)日：2019-05-02

申请号：US16228520

申请日：2018-12-20

Applicant: EMC IP Holding Company LLC

Inventor： Anupam Chakraborty ,  Tushar Dethe ,  Shubhashish Mallik

IPC: H04L29/08

Abstract: Techniques to protect against data loss are disclosed. In various embodiments, an amount of data that has changed since a last backup of at least a defined subset of a save set is determined. The determined amount of changed data is compared to a corresponding threshold. A backup is performed based at least part on a determination that the determined amount of changed data equals or exceeds the threshold.

公开(公告)号：US20190129808A1

公开(公告)日：2019-05-02

申请号：US16221246

申请日：2018-12-14

Applicant: EMC IP Holding Company LLC

Inventor： Soumen Acharya ,  Anupam Chakraborty ,  Sunil Yadav ,  Tushar Dethe

IPC: G06F11/14 ,  G06F3/06 ,  G06F9/455

Abstract: Techniques for virtual proxy based backup of virtual machines in a cluster environment are disclosed. In some embodiments, each of a subset of virtual machines hosted by physical nodes in a cluster environment is configured as a virtual proxy dedicated to backup operations. During backup, data rollover of each virtual machine in the cluster environment that is subjected to backup is performed using a virtual proxy.

公开(公告)号：US12026062B2

公开(公告)日：2024-07-02

申请号：US17140855

申请日：2021-01-04

Applicant: EMC IP Holding Company LLC

Inventor： Sunil Yadav ,  Shelesh Chopra ,  Amarendra Behera ,  Tushar Dethe ,  Himanshu Arora ,  Deependra Singh ,  Jigar Bhanushali ,  Prabhat Kumar Dubey ,  Ravi Vijayakumar Chitloor

IPC: G06F11/14 ,  G06F9/54 ,  G06F16/23 ,  G06F21/62

CPC classification number: G06F11/1464 ,  G06F9/547 ,  G06F16/2379 ,  G06F21/6218 ,  G06F2201/84

Abstract: Described is a system for managing backup data stored on a cloud-based object storage irrespective of the storage provider. The system may include a server (or gateway) that provides a backup service, and acts as an intermediary between a client device and object storage. To provide such capabilities, the system may manage an application programming interface (API) that provides a uniform set of methods to a client device irrespective of the destination object storage provider. A function library may include provider-specific functions that invoke corresponding storage-layer operations provided by the destination object storage. The server may also manage an operation pool to schedule operations and saturate bandwidth to the object storage. The server may also implement a specialized metadata database to provide further storage efficiencies by storing certain backup data exclusively within the metadata database.

公开(公告)号：US11829630B2

公开(公告)日：2023-11-28

申请号：US17078958

申请日：2020-10-23

Applicant: EMC IP Holding Company LLC

Inventor： Ravi Vijayakumar Chitloor ,  Sunil Yadav ,  Shelesh Chopra ,  Amarendra Behera ,  PrabhatKumar Dubey ,  Deependra Singh ,  Jigar Bhanushali ,  Himanshu Arora ,  Tushar Dethe

IPC: G06F3/06

CPC classification number: G06F3/0652 ,  G06F3/067 ,  G06F3/0619 ,  G06F3/0653 ,  G06F3/0659

Abstract: Described is a system (and method) for providing multiple types of granular delete operations for a cloud-based object storage. The system may include a server that acts as an intermediary between a client device and an object storage that stores client data. The server may allow a client to perform a hard delete (or permanent) delete and a soft delete. The server may perform a specialized processing to synthetically create the soft delete feature using a permanent object delete operation provided by the object storage. The specialized processing may include manipulating retention periods associated with objects depending on whether the object is subject to a hard delete or a soft delete. As a result, the server may provide the ability for clients to perform a soft delete at an object level using existing storage level APIs that do not directly support such a feature.

公开(公告)号：US11669403B2

公开(公告)日：2023-06-06

申请号：US17150077

申请日：2021-01-15

Applicant: EMC IP Holding Company LLC

Inventor： Ravi Vijayakumar Chitloor ,  Sunil Yadav ,  Shelesh Chopra ,  Amarendra Behera ,  Tushar Dethe ,  Deependra Singh ,  Prabhat Kumar Dubey ,  Himanshu Arora ,  Jigar Bhanushali

IPC: G06F11/14

CPC classification number: G06F11/1451 ,  G06F11/1469

Abstract: Described is a system for intelligent re-tiering of backup data stored on a cloud-based object storage. More specifically, the system may re-tier objects such that the system retains the ability to efficiently perform a full restore of backup data even when incremental backups are performed to a cloud-based object storage. To provide such a capability, the system may maintain a specialized metadata database that stores information indicating the backup time for each backup, and a list of objects required to perform a full restore to each of the backup times. Accordingly, when using a threshold time (e.g. expiry) to select object candidates for re-tiering, the system may leverage the metadata database to ensure that objects that may still need to be referenced are not unnecessarily moved to a lower storage tier.

公开(公告)号：US11593226B2

公开(公告)日：2023-02-28

申请号：US16672303

申请日：2019-11-01

Applicant: EMC IP Holding Company LLC

Inventor： Asif Khan ,  Amith Ramachandran ,  Amarendra Behera ,  Deepika Nagabushanam ,  Ashish Kumar ,  Pati Mohan ,  Tushar Dethe ,  Himanshu Arora ,  Gururaj Soma ,  Sapna Chauhan ,  Soumen Acharya ,  Reshmee Jawed ,  Yasemin Ugur-Ozekinci ,  Shelesh Chopra ,  Navneet Upadhyay ,  Shraddha Chunekar

IPC: G06F11/32 ,  G06F3/0484 ,  G06F12/16 ,  G06F11/14

Abstract: A backup manager for managing backup services includes persistent storage and a backup analyzer. The persistent storage includes a backup data repository and protection policies. The backup analyzer identifies a new backup stored in backup storage; performs a backup compatibility analysis on the new backup to determine inter-backup compatibility of the identified new backup; updates the backup data repository based on the inter-backup compatibility to obtain an updated backup data repository; and modifies a backup schedule using the updated backup data repository to meet a requirement of a protection policy of the protection policies.

公开(公告)号：US11461189B1

公开(公告)日：2022-10-04

申请号：US17233682

申请日：2021-04-19

Applicant: EMC IP Holding Company LLC

Inventor： Sunil Yadav ,  Shelesh Chopra ,  Amarendra Behera ,  Tushar Dethe ,  Himanshu Arora ,  Deependra Pratap Singh ,  Jigar Premjibhai Bhanushali ,  Sapna Chauhan ,  Anjana Rao ,  Vipin Kumar Kaushal ,  Ravi Vijayakumar Chitloor

IPC: G06F12/00 ,  G06F11/14 ,  G06F3/06 ,  G06F16/11

Abstract: A system for providing data protection services for user data generated by an application includes persistent storage that includes an archive storage and a backup storage. The system also includes a manager. The manager is programmed to generate data chunks using user data, generate backup object metadata associated with the data chunks; obtain previously generated backup object metadata associated with the user data using an archive value, make a first determination that at least one data chunk of the data chunks is to be archived using the backup object metadata and the previously generated backup object metadata, and, in response to the first determination: store the at least one data chunk in the archive storage as a portion of a user data backup, and store remaining data chunks of the data chunks in the backup storage as the remaining portion of the user data backup.

公开(公告)号：US20220283906A1

公开(公告)日：2022-09-08

申请号：US17193168

申请日：2021-03-05

Applicant: EMC IP Holding Company LLC

Inventor： Anjana Rao ,  Tushar Dethe ,  Sapna Chauhan ,  Jigar Premjibhai Bhanushali ,  Sunil Yadav ,  Amarendra Behera ,  Shelesh Chopra ,  Himanshu Arora ,  Vipin Kumar Kaushal ,  Deependra Pratap Singh

IPC: G06F11/14

Abstract: A system for providing data protection services for user data associated with calendar groups generated by an application includes persistent storage for storing user data backups and a manager. The manager is programmed to identify a backup generation event for the user data associated with a calendar group based on a protection policy, obtain user data associated with the backup generation event from the application in response to identifying the backup generation event, select a calendar of calendars included in the user data, obtain user metadata associated with the calendar, generate calendar group information associated with the calendar using the user data and the user metadata, generate a user data backup using the user data, the calendar group information, and the user metadata, in which the user data backup comprises backup data and backup metadata.