Huawei OceanStor V3 Series Features Manual page 176

OceanStor V3 Series
Remote Replication Feature Guide for Block
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Procedure
Step 1 Configure the remote replication from the production center to the DR center.
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Step 2 Replicate data from the production center to the external storage system.
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Step 3 Move the external storage system to the DR center.
Step 4 Recover data from the external storage system to the storage system of the DR center.
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Issue 06 (2018-01-30)
A LUN has been created on the external storage system. This LUN has the same capacity
as the primary and secondary LUNs of the remote replication.
The external storage system is in the production center and connected to the storage
system of the production center. The remote storage system has been configured in the
production center.
The external storage system is a Huawei product and supports the LUN copy feature.
The production center supports the snapshot feature.
Log in to the storage system of the production center and create a remote replication. The
primary LUN of the remote replication is the LUN of the production center and the
secondary LUN is the LUN of the DR center.
The remote replication is created from the production center to the DR center and its
Pair Health Status is Normal.
NOTE
When creating remote replication, select The primary and secondary LUNs have consistent
data and data synchronization is not required.
Split the remote replication from the production center to the DR center.
The remote replication is split from the production center to the DR center and its Pair
Running Status is Split.
Create and activate a snapshot for the primary LUN of the production center.
The snapshot is created and activated.
Log in to the external storage system and create a full LUN copy. The source LUN of the
LUN copy is the snapshot for the storage system of the production center and the target
LUN is the LUN of the external storage system.
The full LUN copy is created and its Health Status is Normal.
Start the full LUN copy.
The full LUN copy is started and its Running Status is Copying. After the full LUN
copy is complete, its Running Status becomes Completed.
Delete the full LUN copy.
The full LUN copy is deleted.
Log in to the storage system of the production center and deactivate and delete the
snapshot.
The snapshot is deactivated and deleted.
Cancel the write protection for the secondary LUN of the remote replication from the
production center to the DR center.
Set the property of the secondary LUN (LUN of the DR center) to write through.
NOTE
In developer mode, run the change lun lun_id=## write_policy=write_through command.
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A Using the External Storage System to Perform Initial
Synchronization for a Remote Replication
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