公开(公告)号：US09383937B1

公开(公告)日：2016-07-05

申请号：US13827909

申请日：2013-03-14

Applicant: EMC Corporation

Inventor： Shahar Frank ,  Assaf Natanzon ,  Jehuda Shemer

IPC: G06F3/06

CPC classification number: G06F3/0641 ,  G06F3/0604 ,  G06F3/0608 ,  G06F3/0611 ,  G06F3/065 ,  G06F3/0655 ,  G06F3/067 ,  G06F3/0683 ,  G06F3/0685

Abstract: In one aspect, a method includes checking periodically, using a processor, for a value associated with data in a data block in a higher tier journal stored on a first storage array having deduplication-based functionality and copying the data in the data block from the higher tier journal to a lower tier journal in a second storage array if the data in the data block exists only in an UNDO stream in the higher tier journal. The first storage array and the second storage array are used in a continuous data protection system to replicate a volume. The method also includes replacing the data in the data block in the journal with a zero block if the data in the data block exists only in the UNDO stream.

Abstract translation: 在一个方面，一种方法包括使用处理器周期性地检查与存储在具有基于重复数据删除功能的第一存储阵列上的较高级日志中的数据块中的数据相关联的值，并将数据块中的数据从 如果数据块中的数据仅存在于较高级日志中的UNDO流中，则将更高级日志存储到第二存储阵列中的较低级日志。 第一个存储阵列和第二个存储阵列用于连续数据保护系统中以复制一个卷。 如果数据块中的数据仅存在于UNDO流中，则该方法还包括以零块替换日志中的数据块中的数据。

公开(公告)号：US10031703B1

公开(公告)日：2018-07-24

申请号：US14144633

申请日：2013-12-31

Applicant: EMC Corporation

Inventor： Assaf Natanzon ,  Yochai Gal ,  Shahar Frank

IPC: G06F3/06

Abstract: Example embodiments of the present invention relate a method, a system, and a computer program product for extent-based tiering for virtual storage using full LUNs. The method includes exposing a virtual LUN comprising a first LUN in a first tier of storage having a first latency and a second LUN in a second tier of storage having a second latency and managing the virtual LUN according to properties of the first LUN, properties of the second LUN, and a policy.

公开(公告)号：US10445184B1

公开(公告)日：2019-10-15

申请号：US14838702

申请日：2015-08-28

Applicant: EMC Corporation

Inventor： Renen Hallak ,  Kirill Shoikhet ,  Irit Yadin-Lempel ,  Erez Webman ,  Shahar Frank

IPC: G06F11/14 ,  G06F3/06 ,  G06F12/02

Abstract: A memory management system for a thinly provisioned memory volume in which a relatively larger virtual address range of virtual address blocks is mapped to a relatively smaller physical memory comprising physical memory blocks via a mapping table containing entries only for addresses of the physical memory blocks containing data. The memory management system comprises a snapshot provision unit to take a given snapshot of the memory volume at a given time, the snapshot comprising a mapping table and memory values of the volume, the mapping table and memory values comprising entries only for addresses of the physical memory containing data. The snapshot is managed on the same thin provisioning basis as the volume itself, and the system is particularly suitable for RAM type memory disks.

公开(公告)号：US09110914B1

公开(公告)日：2015-08-18

申请号：US13827959

申请日：2013-03-14

Applicant: EMC Corporation

Inventor： Shahar Frank ,  Assaf Natanzon ,  Jehuda Shemer

IPC: G06F17/30

CPC classification number: G06F17/30156 ,  G06F11/14

Abstract: In one aspect, a method includes intercepting a write I/O to a first storage volume of a first storage array having a deduplication-based storage functionality, sending metadata and a signature to a replication data protection appliance and increasing a first reference count representing the data in the write I/O stored at the first storage array if the signature is written to the first journal.

Abstract translation: 在一个方面，一种方法包括：将具有基于重复数据删除的存储功能的第一存储阵列的第一存储卷的写I / O截取，向复制数据保护装置发送元数据和签名，并增加代表复制数据保护装置的第一参考计数 如果签名被写入第一个日志，则存储在第一个存储阵列中的写入I / O中的数据。

公开(公告)号：US08996460B1

公开(公告)日：2015-03-31

申请号：US13827862

申请日：2013-03-14

Applicant: EMC Corporation

Inventor： Shahar Frank ,  Assaf Natanzon ,  Jehuda Shemer

IPC: G06F17/30

CPC classification number: G06F17/30088 ,  G06F11/14

Abstract: In one aspect, a method to generate a point-in-time (PIT) snapshot of deduplication-based volume includes generating a virtual access data structure, generating a preliminary snapshot of the volume and modifying the preliminary snapshot to point to a block according to the virtual access data structure to generate the PIT snapshot of the deduplication-based volume.

Abstract translation: 一方面，一种生成基于重复数据消除的卷的时间点（PIT）快照的方法包括生成虚拟访问数据结构，生成卷的初步快照，并修改初步快照以指向根据 虚拟访问数据结构来生成基于重复数据消除的卷的PIT快照。

公开(公告)号：US09696939B1

公开(公告)日：2017-07-04

申请号：US13826966

申请日：2013-03-14

Applicant: EMC Corporation

Inventor： Shahar Frank ,  Assaf Natanzon

IPC: G06F15/167 ,  G06F3/06

CPC classification number: G06F3/065 ,  G06F11/1453 ,  G06F11/1464 ,  G06F11/1471 ,  G06F2201/83 ,  G06F2201/84

Abstract: In one aspect, a method to send a snapshot to a replication site includes generating a first snapshot of a production storage volume at a first point in time, generating a second snapshot of the production storage volume at a second point in time after the first point in time, obtaining differences between the first snapshot and the second snapshot, reading signatures from the production storage volume, sending the signatures to the replication site, writing the signatures to the replication site, reading data from changed locations in the second snapshot which is not at the replication site and sending the data from the changed locations to the replication site comprising a replica volume replicating the production storage volume. The production storage volume is part of a deduplication-based storage array.