US 10,706,072 B2 · Data replication method and storage system

Abstract

A data replication method and a storage system are provided. The method is applied to a storage system including a first storage device and a second storage device. According to the method, after determining replication information, a first storage system determines a first replication sub-information and a second replication sub-information according to the replication information, where the replication information is used to indicate data that needs to be replicated by the first storage system to a second storage system in a current replication task. Then, the first storage device replicates data to the second storage system according to the second replication sub-information, and the second storage device replicates data to the second storage system according to the second replication sub-information. According to the data replication method, efficiency of replication performed between the first storage system and the second storage system can be improved.

Claims20

Dependent claims

A data replication method, comprising:

replicating, by a first storage device, a first portion of data indicated by a replication information to a destination storage device, wherein the replication information indicates that the data needs replicating to the destination storage device, wherein the replication information comprises:
first replication sub-information that indicates the first portion of the data that needs replicating by the first storage device to the destination storage device, and
second replication sub-information that indicates a second portion of the data that needs replicating by a second storage device to the destination storage device;
and
replicating, by the second storage device, the second portion of the data indicated by the replication information to the destination storage device during a process when the first storage device replicates the first portion of the data to the destination storage device, wherein the first storage device and the second storage device store the data, and the first portion and the second portion are different portions of the data.

2 more elements

A data replication method comprising:

sending, by a destination storage device, a first acquisition request to a first storage device, wherein the first acquisition request includes information of a first portion of data, and wherein the first portion of the data needs being acquired from the first storage device;
sending, by the destination storage device, a second acquisition request to a second storage device, wherein the second acquisition request includes information of a second portion of the data, wherein the second portion of the data needs being acquired from the second storage device, and wherein the first storage device and the second storage device store the data;
receiving, by the destination storage device, the first portion of the data sent by the first storage device according to the first acquisition request;
and
receiving, by the destination storage device, the second portion of the data sent by the second storage device according to the second acquisition request while receiving the first portion of the data from the first storage device.

2 more elements

A storage system, comprising a controller and a storage, wherein

the controller is configured to:
send a first acquisition request to a first storage device, wherein the first acquisition request includes information of a first portion of data, and wherein the first portion of the data needs being acquired from the first storage device;
send a second acquisition request to a second storage device, wherein the second acquisition request includes information of a second portion of the data, wherein the second portion of the data needs being acquired from the second storage device, and wherein the first storage device and the second storage device store the data;
receive the first portion of the data sent by the first storage device according to the first acquisition request;
and
receive the second portion of the data sent by the second storage device according to the second acquisition request while receiving the first portion of the data from the first storage device.

3 more elements

Dependencies are inferred from the claim text.

Data replication method and storage system

Life of this patent

Data replication method and storage system

Life of this patent

Abstract

Claims20