公开(公告)号：US10783078B1

公开(公告)日：2020-09-22

申请号：US15001789

申请日：2016-01-20

Applicant: EMC Corporation

Inventor： David Meiri ,  Anton Kucherov ,  Vladimir Shveidel

IPC: G06F12/0831 ,  G06F12/128 ,  G06F12/02

Abstract: In one aspect, a method includes splitting empty RAID stripes into sub-stripes and storing pages into the sub-stripes based on a compressibility score. In another aspect, a method includes reading pages from 1-stripes, storing compressed data in a temporary location, reading multiple stripes, determining compressibility score for each stripe and filling stripes based on the compressibility score. In a further aspect, a method includes scanning a dirty queue in a system cache, compressing pages ready for destaging, combining compressed pages in to one aggregated page, writing one aggregated page to one stripe and storing pages with same compressibility score in a stripe.

公开(公告)号：US10726043B1

公开(公告)日：2020-07-28

申请号：US15195115

申请日：2016-06-28

Applicant: EMC Corporation

Inventor： Xiangping Chen ,  David Meiri ,  William R. Stronge

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

Abstract: A system, computer program product, and computer-executable method for managing replication from a production site to a target site, wherein both the production site and the target site are content addressable data storage systems, the system, computer program product, and computer-executable method including processing a replication session from the production site to the target site, collecting information related to the replication session from the production site to the target site, analyzing the information to determine whether to change the processing of the replication session, upon a positive determination, modifying the processing of the replication session.

公开(公告)号：US10152527B1

公开(公告)日：2018-12-11

申请号：US14979890

申请日：2015-12-28

Applicant: EMC Corporation

Inventor： David Meiri ,  Irit Lempel

IPC: G06F17/30

Abstract: In one aspect, a method includes selecting a C-module; sending a write from a host to the selected C-module; selecting a D-module to commit a page related to the write; selecting a R-module to transmit data from the write to the target; writing the data from the write to target location; and writing the data to an address-to-hash table after acknowledgement that the data has been written to the target location and after the D-module acknowledges that the page is committed.

公开(公告)号：US10025843B1

公开(公告)日：2018-07-17

申请号：US14494895

申请日：2014-09-24

Applicant: EMC Corporation

Inventor： David Meiri ,  Ido Halevi

IPC: G06F17/00 ,  G06F17/30

Abstract: In one aspect, a method includes merging a first consistency group (CG) with a second CG on a source side of a replication system and merging a third CG with a fourth CG on the target side of the replication system. The first CG and the third CG form a first replication pair (RP) and the second CG and the fourth CG form a second RP. The merging includes changing a replication policy of the first RP to be equal to a retention policy of the second RP, waiting for the first RP and the second RP to stop data transfer, terminating replication of the first RP after the data transfer stopped, updating the first RP and second RP at the source side, updating the first RP and second RP at the target side and resuming replication using the second RP.

公开(公告)号：US20170185326A1

公开(公告)日：2017-06-29

申请号：US14982951

申请日：2015-12-29

Applicant: EMC Corporation

Inventor： David Meiri ,  Irit Yadin Lempel ,  Tal Ben-Moshe

IPC: G06F3/06 ,  G06F17/30

CPC classification number: G06F3/0619 ,  G06F3/065 ,  G06F3/067 ,  G06F16/137 ,  G06F16/1844

Abstract: A System, computer program product, and computer-executable method of transitioning replication on a data storage system including a production site and a replication site from asynchronous replication to synchronous replication, the System, computer program product, and computer-executable method including receiving a request to transition from asynchronous replication to synchronous replication and changing the data storage system to a transition mode, wherein the data storage system transitions the data storage system from using asynchronous replication to synchronous replication.

公开(公告)号：US10324635B1

公开(公告)日：2019-06-18

申请号：US15076946

申请日：2016-03-22

Applicant: EMC Corporation

Inventor： David Meiri

IPC: G06F3/06

Abstract: Described embodiments provide systems and processes for performing data replication in a storage system. The data replication operation replicates data from at least one source device to at least one target device of the storage system. A link capacity of a link between at least one source device and at least one target device is determined. Processor overhead associated with one or more data compression processes, and one or more operating conditions of the storage system are determined. Based at least at least in part upon the determined link capacity, the determined processor overhead, and the determined one or more operating conditions, one or more settings of a data replication operation of the storage system are adapted. The data replication operation is performed according to the adapted one or more settings.

公开(公告)号：US20170192857A1

公开(公告)日：2017-07-06

申请号：US14984334

申请日：2015-12-30

Applicant: EMC Corporation

Inventor： David Meiri ,  Xiangping Chen

IPC: G06F11/14 ,  G06F17/30

CPC classification number: G06F16/273 ,  G06F11/1458 ,  G06F11/1461 ,  G06F16/125 ,  G06F2201/84

Abstract: Example embodiments of the present invention relate to methods, systems, and computer program products for determining replicas for removal from a plurality of replicas as defined in a data retention policy. The method includes performing asynchronous replication from a source to a target according to time-based replication cycles. A retention policy then may be identified defining a number of asynchronous replication replicas to retain and a plurality of associated periods which then may be retained according to the policy.

公开(公告)号：US09037816B1

公开(公告)日：2015-05-19

申请号：US14296501

申请日：2014-06-05

Applicant: EMC Corporation

Inventor： Mark J. Halstead ,  Dan Arnon ,  David Meiri

IPC: G06F12/00 ,  G06F3/06

CPC classification number: G06F3/0665 ,  G06F3/0619 ,  G06F3/065 ,  G06F3/0689 ,  G06F11/1666 ,  G06F11/20 ,  G06F11/2069 ,  Y10S707/99953 ,  Y10S707/99954

Abstract: Dynamically creating a communication path between first and second storage devices, includes creating a connection to a source volume on the first storage device and indicating that the source volume is not ready to transmit data on the communication path, after successfully creating the connection to the source volume, creating a connection to a destination volume on the second storage device and initially indicating that portions of one of: the destination volume and the source volume do not contain valid copies of data, where the destination volume accepts data from the source volume, and after successfully creating the connections to the source and destination volumes, indicating that the source volume is ready to transmit data on the communication path. Dynamically creating a communication path between first and second storage devices, may also include creating at least one of: the source volume and the destination volume. Creating the connection to the source volume may include modifying a table containing configuration information for the first storage device. Creating the connection to the destination volume may include modifying a table containing configuration information for the second storage device.

Abstract translation: 在第一和第二存储设备之间动态地创建通信路径，包括在成功创建到源的连接之后创建到第一存储设备上的源卷的连接并且指示源卷未准备好在通信路径上传输数据 创建与第二存储设备上的目的地卷的连接，并且最初指示目的卷和源卷之一的部分不包含数据的有效副本，其中目的地卷接收来自源卷的数据，以及 在成功创建到源卷和目标卷的连接后，指示源卷准备好在通信路径上传输数据。 在第一和第二存储设备之间动态地创建通信路径还可以包括创建源卷和目的地卷中的至少一个。 创建与源卷的连接可能包括修改包含第一个存储设备的配置信息的表。 创建到目标卷的连接可能包括修改包含第二个存储设备的配置信息的表。

公开(公告)号：US09026696B1

公开(公告)日：2015-05-05

申请号：US14152126

申请日：2014-01-10

Applicant: EMC Corporation

Inventor： Assaf Natanzon ,  Arieh Don ,  David Meiri

IPC: G06F3/00 ,  G06F15/16 ,  G06F13/00 ,  G06F3/06 ,  G06F12/08

CPC classification number: G06F3/061 ,  G06F3/0617 ,  G06F3/0632 ,  G06F3/065 ,  G06F3/067 ,  G06F3/0671 ,  G06F11/2074 ,  G06F12/0802 ,  G06F2201/855

Abstract: Methods and apparatus for eliminating the need for a complete synchronization due to failure of a data protection appliance in a continuous data protection system having a replication splitter. In one embodiment, a continuous data protection system includes a source side having a source side storage array with a splitter and a data protection appliance, where processing includes initiating a source side splitter session, initializing a first I/O tracking mechanism for the splitter session, and activating the splitter to a source side processing active state to continuously push I/O data from the source side to the target side.

Abstract translation: 用于在具有复制分离器的连续数据保护系统中由于数据保护装置故障而消除对完全同步的需要的方法和装置。 在一个实施例中，连续数据保护系统包括源侧，源侧存储阵列具有分离器和数据保护装置，其中处理包括发起源侧分离器会话，初始化分离器会话的第一I / O跟踪机制 并且将分离器激活到源侧处理活动状态以将I / O数据从源侧连续地推送到目标侧。

公开(公告)号：US10824640B1

公开(公告)日：2020-11-03

申请号：US14982963

申请日：2015-12-29

Applicant: EMC Corporation

Inventor： Xiangping Chen ,  Anton Kucherov ,  David Meiri ,  Kobi Luz ,  Felix Shvaiger

IPC: G06F16/27 ,  G06F9/50

Abstract: A system, computer program product, and computer-executable method of scheduling replication on a data storage system, the system, the computer program product, and computer-executable method including receiving a request to replicate a portion of data stored on the data storage system, dividing the portion of data into a plurality of portions, scheduling replication of each of the plurality of portions, and replicating each of the plurality of portions.