3 Configuring Remote Replication
About This Chapter
Synchronous remote replication ensures data consistency between the primary resource and
secondary resource of each remote replication pair. Asynchronous remote replication quickly
responds to hosts' service requests and enables long-distance disaster recovery. Before
configuring remote replication, you must understand the configuration process and check for
the related license file. Then, configure link connectivity and parameters related to remote
replication.
3.1 Configuration Process
This section describes how to configure remote replication. You can set up a pair relationship
between the primary resource and secondary resource to implement data synchronization.
3.2 Preparing for the Configuration
To successfully configure the remote replication feature, you must make preparations in
advance, for example, obtaining the remote replication license, setting device information,
and selecting host ports for data transmission.
3.3 Checking the License File
Remote replication is a value-added feature that requires a licence file. Before configuring
remote replication, ensure that its license file is valid.
3.4 (Optional) Adding Routes
If iSCSI networking is adopted and data needs to be transmitted across network segments,
you need to configure routes.
3.5 Adding a Remote Device
This operation enables you to establish a logical connection between a local storage device
and a remote storage device for data transfer between the two devices.
3.6 Creating a Remote Replication
Remote replication copies data from a local storage device to a remote storage device for
remote disaster recovery. Remote replication includes synchronous remote replication and
asynchronous remote replication.
3.7 Creating a Consistency Group
Remote replication can implement data backup and disaster recovery in the scenario where a
host writes data to a single or multiple independent primary LUNs. However, remote
OceanStor V3 Series
Remote Replication Feature Guide for Block
3 Configuring Remote Replication
Issue 06 (2018-01-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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