US 2019/0163591 A1Published application

Remote Data Replication Method and System

AssigneeHuawei Technologies Co., Ltd.

InventorsJi Ouyang, Huabing Yan

Life of this patent

Estimating the term…

Loading patent…

Abstract

A remote data replication method and a storage system, where a production array sends a data replication request to a disaster recovery array. The data replication request includes an identifier of a source object and a data block corresponding to the source object. The data block is stored in physical space of a hard disk of the production array. The disaster recovery array receives the data replication request. The disaster recovery array creates a target object when the disaster recovery array does not include an object having a same identifier as the source object. An identifier of the target object is the same as the identifier of the source object, the disaster recovery array writes the data block into the physical space. This may reduce bandwidth load between the production array and the disaster recovery array.

Claims20

Dependent claims

A remote data replication method, comprising:

sending, by a production array, a data replication request to a disaster recovery array, wherein the data replication request comprises an identifier of a source object and a data block corresponding to the source object, wherein the data block is stored in physical space of a hard disk of the production array, and wherein an address of the data block stored in the physical space of the production array is a source physical address;
receiving, by the disaster recovery array, the data replication request;
determining, by the disaster recovery array, that the disaster recovery array does not comprise an object having a same identifier as the source object;
creating, by the disaster recover array, a target object corresponding to one or more segments of physical space of a hard disk of the disaster recovery array, wherein an identifier of the target object is a same as the identifier of the source object;
and
writing, by the disaster recovery array, the data block into the physical space of the hard disk of the disaster recovery array, wherein an address of the data block stored in the physical space of the hard disk of the disaster recovery array is a target physical address, and wherein the target physical address is different from the source physical address.

3 more elements

A storage system, comprising:

a disaster recovery array;
and
a production array coupled to the disaster recovery array and configured to send a data replication request to the disaster recovery array, wherein the data replication request comprises an identifier of a source object and a data block corresponding to the source object, wherein the data block is stored in physical space of a hard disk of the production array, and wherein an address of the data block is a source physical address, and
wherein the disaster recovery array is configured to:
receive the data replication request;
determine that the disaster recovery array does not comprise an object having a same identifier as the source object;
create a target object corresponding to one or more segments of physical space of a hard disk of the disaster recovery array, wherein an identifier of the target object is same as the identifier of the source object;
and
write the data block into the physical space of the hard disk of the disaster recovery array, wherein an address of the data block stored in the physical space of the hard disk of the disaster recovery array being is a target physical address, and wherein the target physical address is different from the source physical address.

6 more elements

A computer program product comprising a non-transitory computer readable storage medium storing program code thereon for remote data replication, wherein the program code causes a computer to:

receive a data replication request from a production array, wherein the data replication request comprises an identifier of a source object and a data block corresponding to the source object, wherein the data block is stored in physical space of a hard disk of the production array, and wherein an address of the data block is a source physical address;
determine that a disaster recovery array does not comprise an object having a same identifier as the source object;
create a target object corresponding to one or more segments of physical space of a hard disk of the disaster recovery array, wherein an identifier of the target object is same as the identifier of the source object;
and
write the data block into the physical space of the hard disk of the disaster recovery array, wherein an address of the data block stored in the physical space of the hard disk of the disaster recovery array being a target physical address, and wherein the target physical address is different from the source physical address.

2 more elements

Dependencies are inferred from the claim text.