公开(公告)号：US20180276083A1

公开(公告)日：2018-09-27

申请号：US15923930

申请日：2018-03-16

Applicant: Commvault Systems, Inc.

Inventor： Amit Mitkar ,  Andrei Erofeev ,  Amit Bhaskar Ausarkar ,  Ajay Venkat Nagrale

IPC: G06F11/14 ,  G06F3/06

CPC classification number: G06F9/45558 ,  G06F3/0481 ,  G06F3/0619 ,  G06F3/064 ,  G06F3/0647 ,  G06F3/065 ,  G06F3/0656 ,  G06F3/0664 ,  G06F3/067 ,  G06F11/1469 ,  G06F11/3006 ,  G06F11/3034 ,  G06F11/3055 ,  G06F11/324 ,  G06F2009/45562 ,  G06F2009/45583 ,  G06F2009/45595 ,  G06F2201/815 ,  G06F2201/82 ,  G06F2201/84

Abstract: Recovery points can be used for replicating a virtual machine and reverting the virtual machine to a different state. A filter driver can monitor and capture input/output commands between a virtual machine and a virtual machine disk. The captured input/output commands can be used to create a recovery point. The recovery point can be associated with a bitmap that may be used to identify data blocks that have been modified between two versions of the virtual machine. Using this bitmap, a virtual machine may be reverted or restored to a different state by replacing modified data blocks and without replacing the entire virtual machine disk.

公开(公告)号：US10019172B2

公开(公告)日：2018-07-10

申请号：US15282944

申请日：2016-09-30

Applicant: Commvault Systems, Inc.

Inventor： Amit Mitkar ,  Andrei Erofeev

IPC: G06F12/00 ,  G06F3/06 ,  G06F12/0871 ,  G06F12/0873

CPC classification number: G06F3/061 ,  G06F3/0616 ,  G06F3/065 ,  G06F3/0653 ,  G06F3/0655 ,  G06F3/0656 ,  G06F3/0659 ,  G06F3/0685 ,  G06F12/0871 ,  G06F12/0873 ,  G06F2212/1016 ,  G06F2212/1036 ,  G06F2212/281 ,  G06F2212/305

Abstract: Systems and methods can implement one or more intelligent caching algorithms that reduce wear on the SSD and/or to improve caching performance. Such algorithms can improve storage utilization and I/O efficiency by taking into account the write-wearing limitations of the SSD. Accordingly, the systems and methods can cache to the SSD while avoiding writing too frequently to the SSD to increase or attempt to increase the lifespan of the SSD. The systems and methods may, for instance, write data to the SSD once that data has been read from the hard disk or memory multiple times to avoid or attempt to avoid writing data that has been read only once. The systems and methods may also write large chunks of data to the SSD at once instead of a single unit of data at a time. Further, the systems and methods can write to the SSD in a circular fashion.

公开(公告)号：US09967144B2

公开(公告)日：2018-05-08

申请号：US15187081

申请日：2016-06-20

Applicant: Commvault Systems, Inc.

Inventor： Paramasivam Kumarasamy ,  Rahul S. Pawar ,  Amit Mitkar ,  Sumedh P. Degaonkar

IPC: G06F15/16 ,  H04L12/24 ,  G06F15/177 ,  G06F9/48 ,  G06F9/50 ,  H04L29/08

CPC classification number: H04L41/0816 ,  G06F9/4856 ,  G06F9/5077 ,  G06F15/177 ,  H04L67/06 ,  H04L67/34

Abstract: Software, firmware, and systems are described herein that migrate functionality of a source physical computing device to a destination physical computing device. A non-production copy of data associated with a source physical computing device is created. A configuration of the source physical computing device is determined. A configuration for a destination physical computing device is determined based at least in part on the configuration of the source physical computing device. The destination physical computing device is provided access to data and metadata associated with the source physical computing device using the non-production copy of data associated with the source physical computing device.

公开(公告)号：US09928002B2

公开(公告)日：2018-03-27

申请号：US15099865

申请日：2016-04-15

Applicant: CommVault Systems, Inc

Inventor： Paramasivam Kumarasamy ,  Amit Mitkar ,  Dmitriy Borisovich Zakharkin

IPC: G06F17/00 ,  G06F3/06 ,  G06F17/30 ,  G06F11/14

CPC classification number: G06F3/065 ,  G06F3/0619 ,  G06F3/0683 ,  G06F11/00 ,  G06F11/14 ,  G06F17/30289 ,  G06F17/30575

Abstract: A data storage system includes a generic snapshot interface, allowing for integration with a wide variety of snapshot-capable storage devices. The generic interface can be a programming interface (e.g., an application programming interface [API]). Using the snapshot interface, storage device vendors can integrate their particular snapshot technology with the data storage system. For instance, the data storage system can access a shared library of functions (e.g., a dynamically linked library [DLL]) provided by the vendor (or another by appropriate entity) and that complies with the specifications of the common programming interface. And by invoking the appropriate functions in the library, the data storage system implements the snapshot operation on the storage device.

公开(公告)号：US20170262520A1

公开(公告)日：2017-09-14

申请号：US15454917

申请日：2017-03-09

Applicant: Commvault Systems, Inc.

Inventor： Amit Mitkar ,  Sanjay Kumar

IPC: G06F17/30

CPC classification number: G06F16/275

Abstract: A system according to certain aspects improves the process of performing snapshot replication operations (e.g., maintaining a mirror copy of primary data at a secondary location by generating snapshots of the primary data). The system can collect and maintain cumulative block-level changes to the primary data after each sub-interval of a plurality of sub-intervals between the snapshots. When a snapshot is generated, any changes to the primary data not reflected in the cumulative block-level changes are identified based on the snapshot and transmitted to the secondary location along with the cumulative block-level changes. By the time the snapshot is generated, some or all of the changes to the primary data associated with the given snapshot have already been included in the cumulative block-level changes, thereby reducing the time and computing resources spent to identify and collect the changes for transmission to the secondary location.

公开(公告)号：US09740578B2

公开(公告)日：2017-08-22

申请号：US15073405

申请日：2016-03-17

Applicant: Commvault Systems, Inc.

Inventor： Paramasivam Kumarasamy ,  Amit Mitkar ,  Sumedh Pramod Degaonkar

IPC: G06F9/445 ,  G06F11/14 ,  G06F9/44

CPC classification number: G06F11/1469 ,  G06F9/4406 ,  G06F9/4411 ,  G06F11/00 ,  G06F11/1417 ,  G06F11/1435 ,  G06F11/1451 ,  G06F2201/80

Abstract: According to certain aspects, a method of creating customized bootable images for client computing devices in an information management system can include: creating a backup copy of each of a plurality of client computing devices, including a first client computing device; subsequent to receiving a request to restore the first client computing device to the state at a first time, creating a customized bootable image that is configured to directly restore the first client computing device to the state at the first time, wherein the customized bootable image includes system state specific to the first client computing device at the first time and one or more drivers associated with hardware existing at time of restore on a computing device to be rebooted; and rebooting the computing device to the state of the first client computing device at the first time from the customized bootable image.

公开(公告)号：US09495404B2

公开(公告)日：2016-11-15

申请号：US14098894

申请日：2013-12-06

Applicant: CommVault Systems, Inc.

Inventor： Paramasivam Kumarasamy ,  Rahul S. Pawar ,  Amit Mitkar ,  Satish Chandra Kilaru

IPC: G06F7/00 ,  G06F17/00 ,  G06F17/30 ,  G06F11/14

CPC classification number: G06F17/30345 ,  G06F9/45558 ,  G06F11/1458 ,  G06F11/1461 ,  G06F11/1469 ,  G06F17/30091 ,  G06F17/30126 ,  G06F17/30233 ,  G06F2009/45583 ,  G06F2201/815 ,  G06F2201/84

Abstract: A data storage system protects virtual machines using block-level backup operations and restores the data at a file level. The system accesses the virtual machine file information from the file allocation table of the host system underlying the virtualization layer. A file index associates this virtual machine file information with the related protected blocks in a secondary storage device during the block-level backup. Using the file index, the system can identify the specific blocks in the secondary storage device associated with a selected restore file. As a result, file level granularity for restore operations is possible for virtual machine data protected by block-level backup operations without restoring more than the selected file blocks from the block-level backup data.

Abstract translation: 数据存储系统使用块级备份操作保护虚拟机，并在文件级恢复数据。 系统从虚拟化层底层的主机系统的文件分配表中访问虚拟机文件信息。 在块级备份期间，文件索引将该虚拟机文件信息与辅助存储设备中的相关受保护块相关联。 使用文件索引，系统可以识别与所选还原文件相关联的辅助存储设备中的特定块。 因此，对于由块级备份操作保护的虚拟机数据，对于恢复操作的文件级别粒度是可能的，而不会从块级备份数据中还原多于所选文件块。

公开(公告)号：US12032455B2

公开(公告)日：2024-07-09

申请号：US17982065

申请日：2022-11-07

Applicant: Commvault Systems, Inc.

Inventor： Amit Mitkar ,  Andrei Erofeev ,  Amit Bhaskar Ausarkar ,  Ajay Venkat Nagrale

IPC: G06F12/00 ,  G06F3/06 ,  G06F9/455 ,  G06F11/14 ,  G06F11/30 ,  G06F11/32 ,  G06F16/21 ,  G06F16/16 ,  G06F16/17 ,  G06F16/188

CPC classification number: G06F11/1469 ,  G06F3/0619 ,  G06F3/064 ,  G06F3/065 ,  G06F3/0656 ,  G06F9/45558 ,  G06F11/3006 ,  G06F11/3034 ,  G06F11/324 ,  G06F16/21 ,  G06F2009/45562 ,  G06F2009/45595 ,  G06F16/162 ,  G06F16/164 ,  G06F16/1734 ,  G06F16/188 ,  G06F2201/815 ,  G06F2201/82 ,  G06F2201/84

Abstract: Recovery points can be used for replicating a virtual machine and reverting the virtual machine to a different state. A filter driver can monitor and capture input/output commands between a virtual machine and a virtual machine disk. The captured input/output commands can be used to create a recovery point. The recovery point can be associated with a bitmap that may be used to identify data blocks that have been modified between two versions of the virtual machine. Using this bitmap, a virtual machine may be reverted or restored to a different state by replacing modified data blocks and without replacing the entire virtual machine disk.

公开(公告)号：US11947990B2

公开(公告)日：2024-04-02

申请号：US17710668

申请日：2022-03-31

Applicant: Commvault Systems, Inc.

Inventor： Henry Wallace Dornemann ,  Amit Mitkar ,  Sanjay Kumar ,  Satish Chandra Kilaru ,  Sumedh Pramod Degaonkar

IPC: G06F9/455 ,  G06F11/14 ,  G06F16/182

CPC classification number: G06F9/45558 ,  G06F11/1464 ,  G06F16/1824 ,  G06F2009/45562 ,  G06F2009/45575 ,  G06F2009/45583

Abstract: Illustrative systems and methods enable a virtual machine (“VM”) to be powered up at any hypervisor regardless of hypervisor type, based on live-mounting VM data that was originally backed up into a hypervisor-independent format by a block-level backup operation. Afterwards, the backed up VM executes anywhere anytime without needing to find a hypervisor that is the same as or compatible with the original source VM's hypervisor. The backed up VM payload data is rendered portable to any virtualized platform. Thus, a VM can be powered up at one or more test stations, data center or cloud recovery environments, and/or backup appliances, without the prior-art limitations of finding a same/compatible hypervisor for accessing and using backed up VM data. An illustrative media agent maintains cache storage that acts as a way station for data blocks retrieved from an original backup copy, and stores data blocks written by the live-mounted VM.

公开(公告)号：US11921675B2

公开(公告)日：2024-03-05

申请号：US17380955

申请日：2021-07-20

Applicant: Commvault Systems, Inc.

Inventor： Amit Mitkar ,  Paramasivam Kumarasamy ,  Rajiv Kottomtharayil

IPC: G06F16/174 ,  G06F3/06 ,  G06F13/10 ,  G06F16/17 ,  G06F16/188

CPC classification number: G06F16/1748 ,  G06F3/0608 ,  G06F3/0619 ,  G06F3/0641 ,  G06F3/0664 ,  G06F3/0667 ,  G06F3/067 ,  G06F3/0683 ,  G06F16/1727 ,  G06F16/1734 ,  G06F16/196 ,  G06F13/102

Abstract: An illustrative pseudo-file-system driver uses deduplication functionality and resources in a storage management system to provide an application and/or a virtual machine with access to a locally-stored file system. From the perspective of the application/virtual machine, the file system appears to be of virtually unlimited capacity. The pseudo-file-system driver instantiates the file system in primary storage, e.g., configured on a local disk. The application/virtual machine requires no configured settings or limits for the file system's storage capacity and may thus treat the file system as “infinite.” The pseudo-file-system driver intercepts write requests and may use the deduplication infrastructure in the storage management system to offload excess data from local primary storage to deduplicated secondary storage, based on a deduplication database. The pseudo-file-system driver also intercepts read requests and in response may restore data from deduplicated secondary storage to primary storage, also based on the deduplication database.