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    Synthesizing virtual machine disk backups
    11.
    发明授权
    Synthesizing virtual machine disk backups 有权
    合成虚拟机磁盘备份

    公开(公告)号：US09389800B1

    公开(公告)日：2016-07-12

    申请号：US14227208

    申请日：2014-03-27

    Applicant: EMC Corporation

    Inventor： Assaf Natanzon ,  Saar Cohen ,  Anestis Panidis

    IPC: G06F12/00 ,  G06F3/06

    CPC classification number: G06F3/065 ,  G06F3/0617 ,  G06F3/0641 ,  G06F3/0665 ,  G06F3/0689

    Abstract: The system, process, and methods herein describe a mechanism for extracting virtual machine disk backups from LUN backups. The virtual machine disk backups may be stored in a deduplicated storage system. Thick virtual machine disks may be converted to thin virtual machine disks.

    Abstract translation: 本文的系统，过程和方法描述了从LUN备份中提取虚拟机磁盘备份的机制。 虚拟机磁盘备份可能存储在重复数据删除的存储系统中。 较厚的虚拟机磁盘可能会转换为精简虚拟机磁盘。

    Backing up volumes using fragment files
    13.
    发明授权
    Backing up volumes using fragment files 有权

    公开(公告)号：US10853181B1

    公开(公告)日：2020-12-01

    申请号：US14753389

    申请日：2015-06-29

    Applicant: EMC Corporation

    Inventor： Yoval Nir ,  Saar Cohen ,  Donna Lewis ,  Bhimsen Bhanjois ,  Assaf Natanzon

    IPC: G06F11/14 ,  G06F16/13

    Abstract: In one aspect, a method includes determining a number of data streams to assign to a volume, assigning a fragment file for each data stream, sending fragment files to a backup storage device, synthesizing the fragment files to form an image file for the volume at the backup device, sending new fragment files with changes to the volume to the backup device and synthesizing the new fragment files with the corresponding image file to form a new image file for the volume.

    Migration of snapshot in replication system using a log
    14.
    发明授权
    Migration of snapshot in replication system using a log 有权

    公开(公告)号：US10082980B1

    公开(公告)日：2018-09-25

    申请号：US14310148

    申请日：2014-06-20

    Applicant: EMC Corporation

    Inventor： Saar Cohen ,  Assaf Natanzon

    IPC: G06F12/00 ,  G06F3/06

    CPC classification number: G06F3/065 ,  G06F3/0604 ,  G06F3/0647 ,  G06F3/067 ,  G06F2003/0697

    Abstract: In one aspect, a method includes copying an oldest snapshot of a first volume of a first storage array to a second volume of a second storage array and copying a log to the second storage array to form a replica log. The log includes write I/Os applied to the first volume and bookmarks denoting when snapshots of the first volume are generated. The method further includes generating a first snapshot of the second volume, applying data from the replica log to the second volume until a bookmark is reached and generating a second snapshot of the second volume after the bookmark is reached. The first snapshot is a copy of the oldest snapshot.

    Production recovery using a point in time snapshot
    16.
    发明授权
    Production recovery using a point in time snapshot 有权

    公开(公告)号：US09804934B1

    公开(公告)日：2017-10-31

    申请号：US14585777

    申请日：2014-12-30

    Applicant: EMC Corporation

    Inventor： Assaf Natanzon ,  Saar Cohen ,  Anestis Panidis

    IPC: G06F11/00 ,  G06F11/14

    CPC classification number: G06F11/1469 ,  G06F11/1453 ,  G06F11/1464 ,  G06F2201/84

    Abstract: A system, computer program product, and computer-executable method for providing access to data on a primary data storage including a production Logical Unit (LU) in communication with a backup storage and a Data Protection Appliance (DPA), the system, computer program product, and computer-executable method comprising creating a snapshot of the production LU on the primary data storage, synthesizing a recovery snapshot at a Point in Time (PiT), wherein the recovery snapshot is the production LU at the PiT, and performing a restore operation on the snapshot of the production LU at the primary data storage using the recovery snapshot, wherein the snapshot of the production LU is restored to the production LU at the PiT, thereby creating a second recovery snapshot.

    Method and apparatus for replicating the punch command
    17.
    发明授权
    Method and apparatus for replicating the punch command 有权
    复制打孔指令的方法和装置

    公开(公告)号：US09588703B1

    公开(公告)日：2017-03-07

    申请号：US14665110

    申请日：2015-03-23

    Applicant: EMC Corporation

    Inventor： Assaf Natanzon ,  Saar Cohen ,  Lev Ayzenberg ,  Ariel Kulik

    IPC: G06F17/30 ,  G06F3/06

    CPC classification number: G06F3/0619 ,  G06F3/065 ,  G06F3/0659 ,  G06F3/0665 ,  G06F3/0689 ,  G06F11/00 ,  G06F17/30138 ,  G06F17/30191 ,  G06F17/30212 ,  G06F17/30575 ,  G06F21/60

    Abstract: The punch command may be replicated in a replication environment including a production site and a replication site. The solution includes implementing a punch command to free storage received at a replication site in a replication environment by applying the punch command to storage at the replication site and writing data being freed from the storage at the replication site to an undo stream of a journal at the replication site. If the punch command is not supported, a command to write zeros may be used. Further, an unpunch command is provided for properly undoing a punch command and storing data written to the volume before the punch command freed the storage. Additionally, large punch commands may be split into a plurality to smaller punch commands for efficient journal management. Additionally, volume space may be reclaimed by writing a punch command to the journal instead of zeros.

    Abstract translation: 打印命令可以在包括生产站点和复制站点的复制环境中复制。 该解决方案包括实施打孔命令以通过将复制站点上的打包命令应用于复制站点处的存储并将从复制站点上的存储器释放的数据写入到日志的撤消流来释放在复制环境中的复制站点处接收到的存储 复制站点。 如果不支持punch命令，则可以使用写入零的命令。 此外，提供了一个非打开命令，用于在打孔命令释放存储之前适当地撤销打孔命令并存储写入卷的数据。 此外，大的冲头命令可以被分成多个到较小的冲头命令，用于有效的日志管理。 另外，可以通过将punch命令写入日志而不是零来回收卷空间。

    Virtual splitter
    18.
    发明授权
    Virtual splitter 有权
    虚拟分路器

    公开(公告)号：US09507845B1

    公开(公告)日：2016-11-29

    申请号：US14227058

    申请日：2014-03-27

    Applicant: EMC Corporation

    Inventor： Assaf Natanzon ,  Saar Cohen

    IPC: G06F17/30 ,  G06N99/00 ,  G06F9/455

    CPC classification number: G06F9/45533 ,  G06F11/16 ,  G06N99/005

    Abstract: A system, program product, and computer implemented method for replicating a consistency group comprising monitoring the latency between one or more splitters of the consistency group and replication appliances in the replication cluster for the consistency group (CG); wherein each replication appliance of the replication appliances is configured to be able to receive IO from the one or more splitters, determining which replication appliance of the replication appliances has the lowest latency after including additional latency resulting from assignment of the CG to the replication appliance, and configuring the splitter to replicate IO from the CG to the replication appliance determined to have the lowest latency.

    Abstract translation: 一种用于复制一致性组的系统，程序产品和计算机实现的方法，包括监视所述一致性组（CG）的所述一致性组的一个或多个分离器与复制集群中的复制设备之间的等待时间; 其中所述复制设备的每个复制设备被配置为能够从所述一个或多个分离器接收IO，从在将所述CG分配给所述复制设备之后，确定所述复制设备的哪个复制设备具有最低延迟， 并配置分离器将IO从CG复制到被确定具有最低延迟的复制设备。

    Replication ordering
    20.
    发明授权
    Replication ordering 有权

    公开(公告)号：US10067694B1

    公开(公告)日：2018-09-04

    申请号：US14674708

    申请日：2015-03-31

    Applicant: EMC Corporation

    Inventor： Assaf Natanzon ,  Leehod Baruch ,  Jehuda Shemer ,  Saar Cohen ,  Slavik Neymer

    IPC: G06F12/00 ,  G06F3/06

    Abstract: A method, system, and program product for intercepting an IO from a host running a virtual machine directed to a virtual machine disk at a splitter, wherein the host is being replicated by data protection appliances, adding ordering information to the IO, sending the IO to the virtual machine disk, determining one data protection appliance of the data protection appliances to replication the IO, and sending the IO to the one of the data protection appliances.

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