Procedure
Step 1 Configure the remote replication from the production center to the DR center.
1. 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.
2. 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.
Step 2 Replicate data from the production center to the external storage system.
1. Create and activate a snapshot for the primary LUN of the production center.
The snapshot is created and activated.
2. 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.
3. 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.
4. Delete the full LUN copy.
The full LUN copy is deleted.
5. Log in to the storage system of the production center and deactivate and delete the
snapshot.
The snapshot is deactivated and deleted.
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.
1. Log in to the storage system of the DR center and create a full LUN copy. The source
LUN of the LUN copy is the LUN of the external storage system and the target LUN is
the secondary LUN of the remote replication. Then start the LUN copy.
The full LUN copy is created and started. After the full LUN copy is complete, its
Running Status becomes Completed.
NOTE
– Create this LUN copy in developer mode and use command parameter is_target_lun_check=no.
– Ensure that the remote replication secondary LUN is in the Read-only state during LUN copy and
LUN copy configuration.
2. Delete the full LUN copy.
Step 5 Start the remote replication from the production center to the DR center.
----End
OceanStor V3 Series
Remote Replication Feature Guide for Block
A Using the External Storage System to Perform Initial
Synchronization for a Remote Replication
Issue 06 (2018-01-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
170
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