公开(公告)号：US20190108102A1

公开(公告)日：2019-04-11

申请号：US16212219

申请日：2018-12-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chengwei ZHANG ,  Chuanshuai YU ,  Zongquan ZHANG

IPC: G06F11/14 ,  G06F3/06 ,  H03M7/46 ,  G06F11/20 ,  H03M13/15

CPC classification number: G06F11/1469 ,  G06F3/0608 ,  G06F3/0619 ,  G06F3/064 ,  G06F3/065 ,  G06F11/14 ,  G06F11/1451 ,  G06F11/1453 ,  G06F11/1458 ,  G06F11/2094 ,  H03M7/46 ,  H03M13/15

Abstract: Embodiments of the present disclosure disclose a solution for data backup and recovery in a storage system. When a source device in the storage system backs up, to a backup-end device, a data block that is written after a snapshot Sn, the source device performs a logical operation such as an exclusive-NOR or exclusive-OR operation on the written data block and an original data block, which is recorded in the snapshot Sn, of the written data block, and then compresses a data block obtained after the logical operation, which improves a compression ratio of a data block, thereby reducing an amount of data that is sent to the backup-end device, and saving transmission bandwidth. The solution may be further applied to a scenario of data recovery in a storage system.

公开(公告)号：US20170041367A1

公开(公告)日：2017-02-09

申请号：US15235378

申请日：2016-08-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chuanshuai YU ,  Chengwei ZHANG ,  Linbo XU

IPC: H04L29/06 ,  G06F17/30

CPC classification number: H04L65/602 ,  G06F3/0608 ,  G06F3/0641 ,  G06F3/0673 ,  G06F17/3033 ,  G06F17/3053 ,  H04L47/10

Abstract: Embodiments of the present invention provide a method for searching for a data stream dividing point based on a server. In the embodiments of the present invention, a data stream dividing point is searched for by determining whether at least a part of data in a window of M windows meets a preset condition, and when the at least a part of data in the window does not meet the preset condition, a length of N*U is skipped, so as to obtain a next potential dividing point, thereby improving efficiency of searching for a data stream dividing point.

Abstract translation: 本发明的实施例提供了一种用于基于服务器搜索数据流分割点的方法。 在本发明的实施例中，通过确定M个窗口中的数据的至少一部分是否满足预设条件来搜索数据流分割点，并且当窗口中的至少一部分数据不是 满足预设条件，跳过N * U的长度，以获得下一个电位分割点，从而提高搜索数据流分割点的效率。

公开(公告)号：US20160350026A1

公开(公告)日：2016-12-01

申请号：US15235407

申请日：2016-08-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chuanshuai YU ,  Chengwei ZHANG ,  Linbo XU

IPC: G06F3/06

CPC classification number: H04L65/602 ,  G06F3/0608 ,  G06F3/0641 ,  G06F3/0673 ,  G06F17/3033 ,  G06F17/3053 ,  H04L47/10

Abstract: Embodiments of the present invention provide a method for searching for a data stream dividing point based on a server. In the embodiments of the present invention, a data stream dividing point is searched for by determining whether at least a part of data in a window of M windows meets a preset condition, and when the at least a part of data in the window does not meet the preset condition, a length of N*U is skipped, so as to obtain a next potential dividing point, thereby improving efficiency of searching for a data stream dividing point.

Abstract translation: 本发明的实施例提供了一种用于基于服务器搜索数据流分割点的方法。 在本发明的实施例中，通过确定M个窗口中的数据的至少一部分是否满足预设条件来搜索数据流分割点，并且当窗口中的至少一部分数据不是 满足预设条件，跳过N * U的长度，以获得下一个电位分割点，从而提高搜索数据流分割点的效率。