公开(公告)号：US12045137B2

公开(公告)日：2024-07-23

申请号：US17362046

申请日：2021-06-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jipeng Liu ,  Lei Zhang ,  Gaoding Fu

IPC: G06F16/20 ,  G06F11/14 ,  G06F13/20 ,  G06F16/23

CPC classification number: G06F11/1451 ,  G06F11/1461 ,  G06F13/20 ,  G06F16/2365 ,  G06F2201/84

Abstract: In a data backup method performed in a storage system having multiple storage devices, a first storage device having a first LUN queries data consistency points from a second storage device that has a second LUN which has an active-active relationship with the first LUN. The second storage device obtains the data consistency points based on the IO data status record of the first LUN and an IO data status record of the second LUN stored in the second storage device, and provides the data consistency points to the first storage device. The first storage device then creates a snapshot for the first LUN based on the data consistency points, provides differential data between the current snapshot and a previous snapshot, and stores the differential data in the backup storage device.

公开(公告)号：US20250138949A1

公开(公告)日：2025-05-01

申请号：US19003982

申请日：2024-12-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jipeng Liu ,  Hengji Cui ,  Jinbin He

IPC: G06F11/14

Abstract: A backup method, comprising: obtaining backup task information, where the backup task information includes information about to-be-backed-up data and a backup storage identifier; obtaining list information of a first storage pool indicated by the backup storage identifier, where the list information indicates information about storage units in the first storage pool, the first storage pool includes a plurality of storage units, and the plurality of storage units are located in at least two storage clusters; reading the to-be-backed-up data from a production storage based on the information about the to-be-backed-up data; and storing, based on the list information, the to-be-backed-up data in one or more storage units in the first storage pool.

公开(公告)号：US20210326211A1

公开(公告)日：2021-10-21

申请号：US17362046

申请日：2021-06-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jipeng Liu ,  Lei Zhang ,  Gaoding Fu

IPC: G06F11/14 ,  G06F16/23 ,  G06F13/20

Abstract: In a data backup method performed in a storage system having multiple storage devices, a first storage device having a firs LUN queries data consistency points from a second storage device that has a second LUN which has an active-active relationship with the first LUN. The second storage device obtains the data consistency points based on the IO data status record of the first LUN and an IO data status record of the second LUN stored in the second storage device, and provides the data consistency points to the first storage device. The first storage device then creates a snapshot for the first LUN based on the data consistency points, provides differential data between the current snapshot and a previous snapshot, and stores the differential data in the backup storage device.